Are Humans Slowly Losing Their Eyesight? | The Nearsightedness Epidemic

Is it true that humans are slowly losing our eyesight? Is your vision blurry? While it's not the kind of epidemic you're used to hearing about, nearsightedness is becoming a major health issue in many places. Join Michael Aranda for a new episode of SciShow and learn about how scientists are finding out the reasons behind the increase in myopia, and how sunlight might be a key factor!
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Sources:
www.nature.com/nature/ebooks/s... (pp 18-20)
www.npr.org/sections/health-sh...
www.npr.org/sections/goatsands...
archopht.jamanetwork.com/artic...
archopht.jamanetwork.com/artic...
www.aaojournal.org/article/S01...
jama.jamanetwork.com/article.a...
digitalcollections.anu.edu.au...
iovs.arvojournals.org/article....
journals.plos.org/plosone/arti...
www.popsci.com/why-are-so-many...
www.washingtonpost.com/news/s...

Пікірлер: 5 300

  • @JLPUFF
    @JLPUFF6 жыл бұрын

    "Got it!" Stare at the sun to prevent nearsightedness.

  • @13CrystalMoon

    @13CrystalMoon

    4 жыл бұрын

    Permanently.

  • @kittycat-sc7je

    @kittycat-sc7je

    4 жыл бұрын

    Now you have no sightedness!!! Good job😊

  • @cavemann_

    @cavemann_

    4 жыл бұрын

    @@kittycat-sc7je Anti-sight

  • @kurogane2638

    @kurogane2638

    4 жыл бұрын

    oof

  • @emojisrule8048

    @emojisrule8048

    4 жыл бұрын

    -_-

  • @sondrex76
    @sondrex768 жыл бұрын

    So nerds have a higher chance of being nearsighted because they are inside more?...so the whole stereotype that smart people always wear glasses does actually have some ground...ok that was unexpected.

  • @plutoniumuser

    @plutoniumuser

    8 жыл бұрын

    +sondrex well if you are an inside nerd (inside researching stuff) then yes. an outside nerd (outside studying stuff) then no

  • @sondrex76

    @sondrex76

    8 жыл бұрын

    hmm interesting, I have never heard of these "outside nerds" you are refering too...

  • @plutoniumuser

    @plutoniumuser

    8 жыл бұрын

    hmm i guess i just made the term up XD

  • @sondrex76

    @sondrex76

    8 жыл бұрын

    hmm...yeah that might be it...either that or maybe they are extremely rare?

  • @amihartz

    @amihartz

    8 жыл бұрын

    +sondrex Stereotypes always have some bases in reality.

  • @bellowingsilence
    @bellowingsilence2 жыл бұрын

    I like how our display technology advances to the point of HD resolutions and beyond just in time for increasing parts of the population to start seeing naturally at the resolution of a VHS tape

  • @boxed_in4357

    @boxed_in4357

    2 жыл бұрын

    Or a literal 4x4 pixel grid (like me)

  • @appleandroid60

    @appleandroid60

    2 жыл бұрын

    This comment is killing me haha

  • @nk-dw2hm

    @nk-dw2hm

    2 жыл бұрын

    At least now we can afford tvs big enough to be clear from across the room. Anyone else remember goldeneye splitscreen on a 13 in tv?

  • @miso-ge1gz

    @miso-ge1gz

    2 жыл бұрын

    That's why i never bothered with anything more than fullhd even on big tv, i just can't see that resolution

  • @KirstenMarie_MS3

    @KirstenMarie_MS3

    2 жыл бұрын

    Lmao... but between my myopia and astigmatism, the VHS tape is crystal clear..

  • @magma_chicken9993
    @magma_chicken99934 жыл бұрын

    I’m in Singapore and I laughed when it was mentioned that we only spend about 3 hours a week outside. Because it’s so true.

  • @Edible_Kittens

    @Edible_Kittens

    2 жыл бұрын

    Now it’s even worse because a lot of school is online now :/

  • @shneenbrunglesworth9526

    @shneenbrunglesworth9526

    2 жыл бұрын

    Thats such a horrible life.

  • @EdgyDabs47

    @EdgyDabs47

    2 жыл бұрын

    @Thomas Kirkpatrick you're pretty ignorant. Children in Singapore have the longest school hours of any country. And there isn't much grass is Singapore either. It's basically one big city.

  • @Skiltra

    @Skiltra

    2 жыл бұрын

    @@EdgyDabs47 how long is Singapore school hours has to be above 7 hours as that my country for schools specifically and im definitely sure south korea's the worse for school time or maybe that's just time spent studying for school.

  • @terencetan9744

    @terencetan9744

    2 жыл бұрын

    @Algye school hours in sg id roughly the same as us for 15 and below ish

  • @crappyaccount
    @crappyaccount4 жыл бұрын

    "This creates an image that's blurrier when looking at anything farther than your outstretched arm" Bold of you to assume I can see even that well

  • @JohnJames.

    @JohnJames.

    4 жыл бұрын

    This is how I describe my sight

  • @merlinious01

    @merlinious01

    4 жыл бұрын

    If i don't have my glasses, i can't read my phone further than 6 inches or less.

  • @tonk82

    @tonk82

    4 жыл бұрын

    High myopia here, i was born with it. Not even my shoulder looks sharp xD

  • @winonadaphne6445

    @winonadaphne6445

    4 жыл бұрын

    @@tonk82 bruh XD

  • @bethanyday3471

    @bethanyday3471

    4 жыл бұрын

    IKR LOL. I only know what things say/are without my glasses because of colors and mild shapes.

  • @shiny_x3
    @shiny_x36 жыл бұрын

    The other difference between inside and outside is that when you are outside you can look much further - like out to the horizon. You simply cannot focus on such a distance indoors. So it may not be the presence of "near work" but the absence of "far gazing".

  • @caelbrenning4763

    @caelbrenning4763

    3 жыл бұрын

    This actually makes sense like if you practice looking at super far distances you can do that alot but if you are always looking at thing close to you your body thinks you don't need to see things that are far away so It removes the ability to do that.

  • @noahwattel4226

    @noahwattel4226

    3 жыл бұрын

    unless you have windows in your house, and you don't live in a city and can actually see far out of your window.

  • @perttutunkkari3275

    @perttutunkkari3275

    3 жыл бұрын

    @@noahwattel4226 unless your house is in the middle of 10 meter thick forest and because of that can't see anything

  • @noahwattel4226

    @noahwattel4226

    3 жыл бұрын

    @@perttutunkkari3275 XD well just look between the trees.

  • @mittnival5562

    @mittnival5562

    3 жыл бұрын

    I just posted the same point from my experience as a ship's officer. So even outside in an Asian city whats to see but the next building which is not far away.

  • @kaseyquickshot532
    @kaseyquickshot5322 жыл бұрын

    Well I spent plenty of time outside as a child and my eyes are terrible! "The dopamine cycle is needed for healthy eye development" Oh, of course! The childhood depression! How could I be so naive!

  • @JulianaAgra

    @JulianaAgra

    2 жыл бұрын

    I was about to comment that

  • @nuthead8888

    @nuthead8888

    2 жыл бұрын

    Samesies :,(

  • @diegotorres6824

    @diegotorres6824

    2 жыл бұрын

    Right? I got glasses when I was 7 and I spent most my time outside

  • @sejcai

    @sejcai

    2 жыл бұрын

    LMAO

  • @rubenenns7622

    @rubenenns7622

    2 жыл бұрын

    Same as well. Played outside lots along with playing soccer as a child. Maybe our darker winters in Canada are to blame.

  • @ahleenah
    @ahleenah2 жыл бұрын

    I suddenly became nearsighted over the course of a couple months when I was a teenager and now thinking back on it, the only thing that changed in my life back then was that I got depression and stopped any hobbies that involved outdoor activities

  • @lord_khufu

    @lord_khufu

    2 жыл бұрын

    i already become nearsighted when i was 8 years old, funny thing is i'm quite a stupid kid back then so i spend most of my time not studying but instead play outdoor, the nearsighted still worsen til this day which is now more explainable because i'm now for some reason a nerd so yeah i spend 1 hours at best going outside and someday just not going outside at all, didn't help that my room doesn't have a single windows for sunlight either.

  • @narniadici1976

    @narniadici1976

    2 жыл бұрын

    Oh my God same

  • @hah-no.

    @hah-no.

    2 жыл бұрын

    💀🤚🏻

  • @suelane3628

    @suelane3628

    2 жыл бұрын

    So sad. Being outdoors is supposed to ease depression.

  • @jamesbedugraham8056

    @jamesbedugraham8056

    Жыл бұрын

    Yeah when i began to wear Glasses i became very depressed.

  • @saturniphi3354
    @saturniphi33548 жыл бұрын

    shit i'm nearsighted *gets up* *looks out window to see 3+ feet of snow* .... *sits down* fuck that.

  • @HallowedThrall

    @HallowedThrall

    8 жыл бұрын

    Wish I had snow... :(

  • @saturniphi3354

    @saturniphi3354

    8 жыл бұрын

    +Hallowed Thrall (#AMDRedTeam) Not here you wouldn't.

  • @SubNaturalZ

    @SubNaturalZ

    8 жыл бұрын

    +Hallowed Thrall (#AMDRedTeam) Don't worry, I'm here.

  • @minimalsheep8900

    @minimalsheep8900

    8 жыл бұрын

    +Hallowed Thrall (#AMDRedTeam) it was like 80 degrees in Florida on Christmas..... And 60 degree here in Maryland

  • @pikdame

    @pikdame

    8 жыл бұрын

    +Levi Le Heichou Ackerman If I had that much snow I would practically live outside

  • @ashleyli924
    @ashleyli9248 жыл бұрын

    "Are iPads ruining our eyeballs?" *Is watching video on a iPad*

  • @reyespiano945

    @reyespiano945

    8 жыл бұрын

    Haha me too

  • @avinashreji60

    @avinashreji60

    8 жыл бұрын

    Me too

  • @brianperera4349

    @brianperera4349

    7 жыл бұрын

    IncandescentHeart is your cellphone giving you cancer? *reads on cellphone*

  • @columbus8myhw

    @columbus8myhw

    7 жыл бұрын

    I mean, the answer was 'no'

  • @katherinerichardson2273

    @katherinerichardson2273

    7 жыл бұрын

    IncandescentHeart it's recommended 6"-8" away from the screen of devices

  • @tawnypelt1360
    @tawnypelt13602 жыл бұрын

    Wow...I guess I didn't realize how lucky I am. 1. Both of my parents were/are nearsighted (one got lasik) and have needed glasses from a young age. 2. I am the first born child in my family. 3. I don't go outside too much. 4. I study a lot (reading lots of books). And despite this I still have 20/20 vision.

  • @ZVLIAN

    @ZVLIAN

    2 жыл бұрын

    Lucky you

  • @lord_khufu

    @lord_khufu

    2 жыл бұрын

    I'm later and my nearsightedness is the worst among 3, damn it blurry vision is such a pain in the @ss, i'm worthless without these pair of thick glasses, my vision is basically softcore-blind at this point lol

  • @kevinhedman2314

    @kevinhedman2314

    2 жыл бұрын

    How old are you? Mine didn’t start til I was like 25. I had 20/20 up until then.

  • @tawnypelt1360

    @tawnypelt1360

    2 жыл бұрын

    @@kevinhedman2314 17, but both of my parents were nearsighted before that age. I guess you're right, because bad vision often develops in adulthood too.

  • @scrubs3050

    @scrubs3050

    2 жыл бұрын

    I think the primary factor is genetics. It's like how our height and metabolism is already prefixed by this lottery, but we could make it better/worse by our lifestyle.

  • @mickimicki
    @mickimicki3 жыл бұрын

    There is a consolation prize to nearsightedness: At the age when normal-sighted people need reading glasses (or longer arms), I can just take off my glasses or look over them. "Old-sightedness" is canceling out the nearsightedness when doing "near-work".

  • @aalberto6656
    @aalberto66568 жыл бұрын

    what is this so called sun ?

  • @itsus8172

    @itsus8172

    8 жыл бұрын

    I've heard it's like a ginormous burning gas ball or something.

  • @aalberto6656

    @aalberto6656

    8 жыл бұрын

    +Its Us nope, still have no idea

  • @Blazehunter-wx7xp

    @Blazehunter-wx7xp

    7 жыл бұрын

    I think it's a big nuclear reaction of mostly hydrogen and helium, and that we fly around it

  • @blepblops

    @blepblops

    7 жыл бұрын

    +Its Us is plasma

  • @Stelum1000

    @Stelum1000

    7 жыл бұрын

    It's a thing that we, on the earth, revolve once in approximately 365 days. During its life time, it goes through a process called nuclear fusion, burning hydrogen into helium, helium into lithium, lithium into beryllium, beryllium into boron and a couple of more materials.. After it fuses for some time, it turns into a red giant, which will kill the planets Mercury, Venus, and earth. After a millions of years, the outer skin of the star will collapse onto itself, and become a white dwarf. That white dwarf will burn for hundreds more, until it becomes a black dwarf. I'm only 13, so please correct me if I'm wrong, but that's all I can remember.

  • @GrayGoosey1134
    @GrayGoosey11348 жыл бұрын

    my childhood was spent outside. from the moment i could walk i was outside. outdoors was MY LIFE, MY CHILDHOOD! Im 15 and I am legally blind without contacts. WHY CRUEL WORLD WHY?!

  • @GrayGoosey1134

    @GrayGoosey1134

    8 жыл бұрын

    ***** Reduced central visual acuity of 20/200 or less in your better eye with use of the best eyeglass lens to correct your eyesight. Legal blindness is a level of vision loss that has been legally defined to determine eligibility for benefits. The clinical diagnosis refers to a central visual acuity of 20/200 or less in the better eye with the best possible correction, and/or a visual field of 20 degrees or less.....so, yes, i am just very very nearsighted lol

  • @tigerfanfrv

    @tigerfanfrv

    7 жыл бұрын

    retinal detachments when I was 26, spent a lot of time outside as a kid (during the summer). I feel ya.

  • @DavidAllen_0

    @DavidAllen_0

    7 жыл бұрын

    Learn to use your inner sonar like Daredevil.. and bats! ;D No seriously, there was a blind kid who clicked his tongue to sense things around him. Unfortunately he died in his teens, but he was extraordinary!

  • @danielvu7536

    @danielvu7536

    7 жыл бұрын

    David Allen Yeah... I also heard somewhere that he was also sometimes able to play video games. Don't ask me how that works but damn.

  • @Ayaforshort

    @Ayaforshort

    6 жыл бұрын

    Lindsey Well, I have an astigmatism, which means I was born with wonky eyes. So it probably is just the structure of your eye, hun.

  • @playdoughmaster808
    @playdoughmaster8083 жыл бұрын

    Whenever you hear the term Epidemic Me: Laughs in 2020 (I now know the difference between epidemic, and pandemic)

  • @ThrustersX

    @ThrustersX

    3 жыл бұрын

    r/youngpeopleyoutube

  • @wellifailed392

    @wellifailed392

    3 жыл бұрын

    He said epidemic

  • @Vexsus22

    @Vexsus22

    3 жыл бұрын

    ​@@ThrustersX zoomers gonna wear the corona as a badge

  • @DANGJOS

    @DANGJOS

    3 жыл бұрын

    *pandemic* is what we're going though. it sucks!

  • @alysonshorthouse8858

    @alysonshorthouse8858

    3 жыл бұрын

    Came here to make the same comment. You know nothing, 2016 Sci Show!

  • @devent10n
    @devent10n2 жыл бұрын

    So one of the things I deal with is called keratoconus. It's basically where the keratin in your eye gets too weak to be able to hold its shape properly. This creates peaks and valleys (it can turn your eye into a cone, hence the name). It's basically super astigmatism. A newer procedure they do is basically dropping riboflavin drops in your eye and hitting it with a UV light. The riboflavin & keratin crosslink, creating much stronger keratin. It doesn't reverse the damage done, but it does help prevent the disease from progressing. I recognize that this video is old, and I haven't done a lot of looking into the history of the procedure, but I wonder if the studies done about myopia are related to the crosslinking procedure.

  • @lepopcornnaisseur546

    @lepopcornnaisseur546

    2 жыл бұрын

    As someone with keratoconus who recently underwent crosslinking in both eyes, I appreciate what you do. 👍

  • @matthewkeller4889

    @matthewkeller4889

    2 жыл бұрын

    What you are describing is not keratin, it is the cross linking between collagen fibers. We will never perform lasik on a keratoconus pt, glasses will only help mild cases and usually the best achievable vision is attained with hard contact lenses that help to fix the optics of the cone shaped cornea.

  • @cloudycloudi631
    @cloudycloudi6318 жыл бұрын

    outside? whats the IP for that server?

  • @ScienceMarc

    @ScienceMarc

    8 жыл бұрын

    000.get.your.ass.out.sid:e

  • @EvanRustMakes

    @EvanRustMakes

    8 жыл бұрын

    +lisa lavergne "e" is not a valid port

  • @tater7318

    @tater7318

    8 жыл бұрын

    +Chancellor Chesnaught 438.688.743.396

  • @ScienceMarc

    @ScienceMarc

    8 жыл бұрын

    havingMC dang it

  • @plutoniumuser

    @plutoniumuser

    8 жыл бұрын

    +Chancellor Chesnaught i think its a new game on the iphone, not a server

  • @rollerzleader2812
    @rollerzleader28128 жыл бұрын

    I blam it shit on the schools! In middle school and high school your stuck indoors for about 7 hours for 180 days every year. By the time they go home they're all mostly tiered and just wanna chill, ain't no body got time for going outside. Some fools even forgot how to play outside, if your lucky enough to have a free day with the class I'm positive more than half the class is just gonna gather in groups socialising or just use there phones under the shade :/

  • @Soldier842

    @Soldier842

    8 жыл бұрын

    +Rollerzs learder "ain't no body got time for going outside" Do kids these days go to school for more hours than 30 years ago? I doubt it. Pretty sure it's the same, if not less.

  • @chuamc

    @chuamc

    8 жыл бұрын

    +Victor G There have been improvements in education that require more focus on learning and less time for other activities. Consider that cultural priorities have shifted as well, including an increased focus on education, the rise of the Internet, etc. I like to believe that, though necessary, school systems need to be updated to not only educate to the the benefit of each individual, but also provide care for the students.

  • @xivCatumin

    @xivCatumin

    8 жыл бұрын

    +Rollerzs learder Where do you go to school? In the US, or California at least, middle schools require an hour of PE every day, which happens outdoors unless weather prevents that. High schools require a year of PE to graduate, so that could be better, but still isn't as bad as what you say. Plus, sitting in the shade is fine. You're still outside getting more sunlight than sitting inside watching TV/playing video games.

  • @TheVikingSwan

    @TheVikingSwan

    8 жыл бұрын

    +Kitsune Gaming Here in Illinois we only had 45 minutes of PE a week during grade school, most of which took place indoors. Highschool was 45 minutes a day, also taking place mostly indoors.

  • @Onyx499

    @Onyx499

    8 жыл бұрын

    +Kitsune Gaming yeah I'm from CA originally but I moved to the south in Arkansas you only need one semester of PE. And it's indoors in a smelly old gym. Unfortunately the rest of the county is not blessed with sunny skies year round. Here in AR we have fall (the raining season) , winter (which brings Ice and snow), spring (aka TORNADO and allergy season), and summer means schools out.

  • @shadowthoughts7959
    @shadowthoughts79593 жыл бұрын

    We evolved like most creatures under the sun for extended periods while performing our basic tasks...Then we artificially intervened without knowing it...Now we have repercussions. Makes sense in hindsight.

  • @wik7or214

    @wik7or214

    3 жыл бұрын

    dead pun

  • @thaumatomane
    @thaumatomane2 жыл бұрын

    Interesting! I first noticed that I was becoming nearsighted near the end of my undergrad. I am now nearly done my PhD and absolutely require them now. I needed them 10-20 years earlier than either of my parents. This all fits! How fascinating!

  • @Falcondances
    @Falcondances8 жыл бұрын

    *SO GLASSES REALLY DO HAVE A CORRELATION WITH BEING SMARTER*

  • @revel8683

    @revel8683

    8 жыл бұрын

    Yessssss!

  • @abhinath1260

    @abhinath1260

    8 жыл бұрын

    +Falcondances Huzzah!!!!!

  • @monkeyman123321

    @monkeyman123321

    8 жыл бұрын

    +Falcondances Not really. Dumb kids have to study a lot to perform. Smart kids like I was never studied and only got A's and B's.

  • @gerardo5720

    @gerardo5720

    8 жыл бұрын

    +Abhi Nath QUICK! Copy the homework from the kid with glasses before the teacher gets back!

  • @caca075

    @caca075

    8 жыл бұрын

    +Falcondances Haha nice one four eyes. but you know what smart people say: correlation does not imply causation.

  • @treborironwolfe978
    @treborironwolfe9784 жыл бұрын

    *Japanese child:* "Dang you, homework, you are *ruining* my eyesight! *American parent:* "Dang you, Nintendo! you are *ruining* my child's eyesight!"

  • @GiorgosKoukoubagia

    @GiorgosKoukoubagia

    4 жыл бұрын

    Reality: Dang you, stupid society and lazy self, get out more!

  • @TheAkashicTraveller

    @TheAkashicTraveller

    4 жыл бұрын

    Clearly it's all nintendo's fault for making the original gameboy and gameboy colour unplayable undersunlight.

  • @bethanyday3471

    @bethanyday3471

    4 жыл бұрын

    i would love to like this 1k times.

  • @DANGJOS

    @DANGJOS

    3 жыл бұрын

    I feel like I'm being summoned!

  • @sheepketchup9059

    @sheepketchup9059

    3 жыл бұрын

    @@GiorgosKoukoubagia being studious isn't lazy

  • @KingR787
    @KingR7873 жыл бұрын

    Thankyou for giving an informative and credible explanation. Please keep up your awesome work! Love this channel Hope you have a nice day to all the readers

  • @Articulate99
    @Articulate992 жыл бұрын

    Always informative, thanks.

  • @thomasr.jackson2940
    @thomasr.jackson29407 жыл бұрын

    Thank you for a video that treated this topic with the type of detail it deserves. Too many people, including some very popular science channels, jumped on the cell phone bandwagon, but that has never been a serious contender. You were able to summarize the studies, and give the front runner with some helpful and practical advice, but still give caveats appropriate to the state of knowledge. Kudos!

  • @F41LZZz
    @F41LZZz8 жыл бұрын

    i was told going outside was very important for stopping nearsightedness, but they said nothing about sunlight. its more about the fact that your looking around a f'load more than if you where indoors. and focusing on near and far objects in your environment rapidly all the time. the eye is a muscle after all so it makes a lot more sense than sunlight being the reason

  • @F41LZZz

    @F41LZZz

    8 жыл бұрын

    Joaquín Nuñez sorry, i'm just a random person on the internet. i thought it was a very good video but the idea of sunlight stopping nearsightedness sounds like a load of bull. my opinion as a person that isn't a Optometris. and im sure your not one either

  • @thesun849

    @thesun849

    8 жыл бұрын

    I heard my name mortals.

  • @edawg792

    @edawg792

    8 жыл бұрын

    +DayInDaLife There is indeed research on long-term near work causing myopia for some people, at least according to my ophthalmologist.

  • @dreadcthulhu5

    @dreadcthulhu5

    8 жыл бұрын

    +The Sun If it isn't my mortal enemy.

  • @cabudagavin3896

    @cabudagavin3896

    8 жыл бұрын

    +Jake he did give an explanation fyi. Specifically involving the dopamine cycle but he also stated than it may be sports in general. I personally believe that it simply is to do with general mental health ie depression and dopamine sensitivity in the eye. Thus meaning that sun exercise and fresh air all play a part whereas indoor activities such as video games (which are specifically designed to promote dopamine release) potentially desensitize your body to dopamine. But this is speculation as an dopamine sensitivity in the eye and dopamine sensitivity in the brain arent necessarily linked.

  • @mannyespinola
    @mannyespinola3 жыл бұрын

    A bright eye-opener,! thank you for this video!

  • @daisydo7669
    @daisydo76692 жыл бұрын

    This was so interesting! Thank you!

  • @MomusFilms
    @MomusFilms4 жыл бұрын

    One factor you didn’t address is that when outside you’re essentially doing “far work” and flexing your eye to focus on things in the distance. This medium & far focus strikes me as the Yin to the “near work” Yang that balances their muscle development in and around the eye itself, resulting in healthier balanced vision.

  • @michaelmagnimedia3331

    @michaelmagnimedia3331

    4 жыл бұрын

    Ahhh yin yang aka balance go sunbath but not for 6 hours and get a sunburn

  • @ottonormalverbraucher7835

    @ottonormalverbraucher7835

    3 жыл бұрын

    Michael MagniMedia There is sunscreen. So you don't get sunburn. Sunscreen and clothing

  • @DANGJOS

    @DANGJOS

    3 жыл бұрын

    Wouldn't far sight relax the eye muscles, rather than work them?

  • @WhenDoesTheVideoActuallyStart

    @WhenDoesTheVideoActuallyStart

    2 жыл бұрын

    That's a nice hypothesis, if they haven't "addressed it" it must be because there's no evidence for it.

  • @spacewolfcub

    @spacewolfcub

    2 жыл бұрын

    Ah, but how much harder would it be to convince people to not only go outside but also look around? Look away from people in their group, away from the ball they’re chasing, away from their phones, and actually look around them? Daily and for multiple hours? Especially in highly urbanized areas where sight lines might often be blocked by buildings. It’d be very hard to control an experiment that addressed this on a large enough scale to show statistically reliable improvement or failure.

  • @lohphat
    @lohphat6 жыл бұрын

    It's not sunlight exposure itself, it's long distance focus to the horizon. The sunlight helps by contracting the pupil for a sharper focus.

  • @sethbaus

    @sethbaus

    3 жыл бұрын

    lohphat I had this same exact thought. I’m surprised that wasn’t considered in the study.

  • @DrorF

    @DrorF

    3 жыл бұрын

    And how does that help the eye to stay in focus indoors (i.e. prevent nearsightedness)?

  • @hamsacc

    @hamsacc

    3 жыл бұрын

    @@DrorF maybe something similar to muscle memory

  • @DrorF

    @DrorF

    3 жыл бұрын

    @@hamsacc maybe. And maybe not. There is no scientific evidence for these claims. See: en.wikipedia.org/wiki/Bates_method

  • @hamsacc

    @hamsacc

    3 жыл бұрын

    @@DrorF that's sad. I really hope a cure could be developed in the future somehow.

  • @bulldozer8950
    @bulldozer89502 жыл бұрын

    This actually makes a lot of sense. Out of my school soccer team maybe 4 or 5 kids wear glasses out of about 35, while out of my friend group, mostly the nerdier type who have parents who expect a lot of studying snd are less likely to do actividad outside, maybe 5 people DONT need glasses out of about 20. Probably about ten don’t wear glasses/contacts on the regular, but several of those people have glasses they sometimes wear and are technically prescribed to wear, or simply refuse to get tested despite not being able to see what’s actually written on the board. Point is, there’s a very clear contrast between two groups of kids who grew up in, generally, similarish circumstances. The kids who likely spent far more time in childhood outside are less likely to have eye issues, while those who spent more time inside and less outside are far more likely to need glasses.

  • @jamisojo
    @jamisojo4 жыл бұрын

    Awesome video. It's very interesting to hear some facts about nearsightedness.

  • @38dragoon38
    @38dragoon384 жыл бұрын

    Do children in northern European countries, where there is limited sunlight during the winter, suffer more from near-sightedness?

  • @TheAkashicTraveller

    @TheAkashicTraveller

    4 жыл бұрын

    Pretty difficult to find out since it's all been drowned out by everyone being inside all the time now. You'd have to find some good historical records.

  • @runningfromabear8354

    @runningfromabear8354

    4 жыл бұрын

    @@TheAkashicTraveller Most Norwegians keep their newborns and babies outside during their naps to make sure they get lots of sunlight. relocation.no/babies-sleeping-outdoors/ They have special blankets to keep the baby warm and baby monitors with thermometers inside with the baby to track the temperature the baby is experiencing. I grew up in England and northern Germany and my parents made sure I got lots of time outside each winter to protect me from rickets as a baby. It was called a sunbath, but my Mum said it was maybe 20 minutes to half an hour per day. Traditionally, northern Europeans make sure babies get lot's of time outside for vitamin D, help against jaundice and a general belief that the sun is good for you. The problem being is we tend to go a bit over the top. Part of the problem with skin cancer in Europe is that being outside is seen as therapeutic. But you can't have too much of a good thing.

  • @DevanshGuptaChess

    @DevanshGuptaChess

    4 жыл бұрын

    @@runningfromabear8354 Yay Magnus Carlsen

  • @runningfromabear8354

    @runningfromabear8354

    4 жыл бұрын

    @@DevanshGuptaChess Are you calling me MC? I'm a girl.

  • @DevanshGuptaChess

    @DevanshGuptaChess

    4 жыл бұрын

    @@runningfromabear8354 I mean Magnus is from Norway and I am a big fan of his. Seemingly he slept in the sun when a baby and is now Magnus. Love from India and thanks for the reply

  • @Unknown-dp6nl
    @Unknown-dp6nl4 жыл бұрын

    Played outside almost everyday I could as a kid. Still blind as a bat without eyewear.............

  • @fenrirgg

    @fenrirgg

    4 жыл бұрын

    Yeah, me too. I think it is very important the time you spend outside when you are a baby, but he didn't even mention it. Playing sports later could be also a big part too, I didn't play them, but maybe my nearsight had something to do with me don't enjoying playing them.

  • @maratpirate6343

    @maratpirate6343

    4 жыл бұрын

    I started to notice my eyesight drop about the time i got into smartphones and computer games, but i think its genetics first of all

  • @yahikokurotama4351

    @yahikokurotama4351

    4 жыл бұрын

    Genetics then

  • @sempergumby3929

    @sempergumby3929

    4 жыл бұрын

    @@yahikokurotama4351 for many of us I agree that genetics was the origin, but behaviors very much exacerbated the problem and not engaging in eye strengthening activities that could have largely corrected the issue made it effectively permanent. I was astounded when I noticed a drastic improvement in my vision during a short, intensely sunlit portion of a multi-month hike (the PCT). I'm over 50 and had glasses/contacts for 40+ years. Imo, just another case of human behavior choosing the easy ("it's not my fault / I can't help it) path and not the better path. I'm not innocent here, but I hope some younger people choose the harder better way.

  • @elkwolf2888

    @elkwolf2888

    4 жыл бұрын

    @@sempergumby3929 Young people are not ALLOWED outside by their parents most of the time. Fix THAT problem. Teach parents how to actually parent rather than try and mold people like pots.

  • @MrDesu-do4jn
    @MrDesu-do4jn2 жыл бұрын

    Thank you, PBS.

  • @theresamayton302
    @theresamayton3024 жыл бұрын

    Interesting content, but what really stands out for me is the fact that I can more easily understand what's being said. The pace at which this lesson is given is slower than the other two individuals whom I've seen/listened to here. My brain can keep up.

  • @bluedraygon3545

    @bluedraygon3545

    4 жыл бұрын

    I recommend putting the speed down for the others! It really helps slow things down and make things easier to precess

  • @GenaTrius
    @GenaTrius8 жыл бұрын

    How about reading books outside?

  • @pedrovb17

    @pedrovb17

    8 жыл бұрын

    Reading doesn't damage your eyes, that's near work. As long as you're exposed to sunlight it doesn't matter what you do, if the studies are correct that is.

  • @ainselyharriot517

    @ainselyharriot517

    8 жыл бұрын

    Good way to get cataracts.

  • @frenchtallama

    @frenchtallama

    8 жыл бұрын

    +Ainsely Harriot how so?

  • @gildedbear5355

    @gildedbear5355

    8 жыл бұрын

    +frenchtallama I believe cataracts are related to uv light exposure.

  • @briandoolittle3422

    @briandoolittle3422

    8 жыл бұрын

    +Gena Trius Have you ever read a book on a sunny day? its impossible! Seriously, pages are really reflective.

  • @xantog9422
    @xantog94228 жыл бұрын

    thanks, now i have a reason to go outside -_-

  • @zeppie_

    @zeppie_

    8 жыл бұрын

    +Xantog you thank him for that?

  • @xantog9422

    @xantog9422

    8 жыл бұрын

    Zeppelans YUS

  • @xantog9422

    @xantog9422

    8 жыл бұрын

    ***** omg thanks, now i have to stay inside.

  • @puskajussi37

    @puskajussi37

    8 жыл бұрын

    +SuperLifestream Neigbohours upstairs might complain.

  • @angeldude101

    @angeldude101

    8 жыл бұрын

    +SuperLifestream Doesn't seem to work.

  • @neelroy2918
    @neelroy29182 жыл бұрын

    Very nice! Thanks.

  • @patricklewis7636
    @patricklewis76362 жыл бұрын

    Did they adjust for the difference in focus caused by being outside and having no walls? I'd think that would be more compelling a relationship than light.

  • @sushmag4297

    @sushmag4297

    2 жыл бұрын

    I was thinking of the same thing. When you are outside you focus on alot of things at varying distances. When you are inside the furthest thing you can see are walls.

  • @MidnightMustang
    @MidnightMustang4 жыл бұрын

    I can say this is true. My vision was perfect until I hit middle school, where I quickly was just unable to see the board at the front of the class. That stuck till end of high school. Once I started college, I was outside more & my vision improved, and is still improving now; I don't need my glasses to do 99% of things. Now that's quite interesting. Really hope it is the sunlight.

  • @Shetasen

    @Shetasen

    4 жыл бұрын

    I had a similar experience too. Because from middle through high school I had a heavier prescription. But then when I spent 3 years doing outdoor work and my prescription actually improved. I can't even look through my old glasses because theyare do strong.

  • @darkblue9022

    @darkblue9022

    4 жыл бұрын

    That is so interesting! I also had to have glasses in the last year of high school, because I couldn’t read the writing on the blackboard. But I wish my eyesight had stayed as good as it was before. Your stories give me hope!

  • @Ruby_Mochii

    @Ruby_Mochii

    4 жыл бұрын

    I am the same too. I still did go out and play when i was in early half of my high school and half mostly indoors. Even then my eyesight was bad and just gone worse. I kinda hope mine improves because I'm fed up of using glasses but it's unlikely. My work includes spending indoors all day and during summer I could barely see outside because it's so bright. It's not dark or anything, just not bright enough.

  • @mikeg9b

    @mikeg9b

    4 жыл бұрын

    Middle school was the time I needed glasses too. I spent lots of time playing outside until middle school when I started doing a lot of computer programming. My nearsightedness never got better. I'm 50 and my eyesight is as bad as ever.

  • @emiliesmith9917

    @emiliesmith9917

    4 жыл бұрын

    Both of my parents have terrible vision and I spent almost all of my time reading up close as a little kid. I’m also the firstborn. Also, I almost never go outside Needless to say, I can do almost nothing without my glasses and I’ve had them since I was 9.

  • @KITOMERO
    @KITOMERO8 жыл бұрын

    It baffles me that we still can't figure out a real reason why this nearsightedness is so prevalent and that people simply don't seem to care enough about it to find an actual solution, despite almost half the entire population of the world needing glasses to correct myopia. Wearing glasses and our heavy reliance on them is simply beyond an inconvenience. Glasses are cumbersome, or impossible with some forms of physical activities/sports and can even deter people from healthy exercise. The other alternative is using contacts which you can't even wear if you're a person who has drier eyes and they also need to be constantly purchased, washed/replaced and taken out daily or before sleeping/napping. Lenses are also designed to be viewed only from the center and correcting even moderate amounts of myopia with any kind of lenses causes distortion (slight fish-eye effect) around the edges and corners that scales worse with the degree of myopia you have. While you can adapt to this distortion and regain your depth perception, the way you see everything with lenses will *always* be distorted. Then there's laser eye surgery, which you can't get under the age of 18, is still very expensive, and not everyone is physically eligible for. You might not even get great results after the surgery and there may be complications. This is an epidemic indeed, and more people should care.

  • @adatta3046

    @adatta3046

    8 жыл бұрын

    +KitMellow What I don't understand is what actually makes your eye sight worse. I've realised I'm near sighted for a while, but I didn't get an eye test for whatever reason until a week ago. The doctor said that myopia is mainly due to genetics, but doing near sighted activities also play a role in worsening your eyesight. However he also said that I have become increasingly near sighted due to the eye strain I have by not wearing glasses. On one hand he's saying doing near work makes you near sighted and on the other hand he's saying looking at things far away also makes you near sighted.

  • @KITOMERO

    @KITOMERO

    8 жыл бұрын

    That's what they all say. I've heard the exact same things from many different optometrists. Getting glasses earlier (in theory) slows down the myopia process, but it still worsens regardless if you wear these glasses or contacts. Yes genetics can play a role, but it seems to be a much smaller influence than people think, because I know people with parents that never wore glasses but are still myopic to some degree and some even some deeply myopic themselves. And then there's people who have plenty of outdoors/sunlight but can still have nearsight/farsight problems. It's 2016 but nobody seems to know what the actual determining factors are... We know the *theorized* risk factors, but it doesn't really help right now when the need for glasses is scaling faster than the human population is growing.

  • @TheGyreMadHatter

    @TheGyreMadHatter

    6 жыл бұрын

    I am some degree of near-sightedness. I have no idea anymore how much so because, about four years ago, I sat on my glasses and broke them. I was stupid-broke. And it was about that time, that I started to work outside full-time. At this point, I don't really need them anymore. I just always figured my laziness and brokeness made me adapt to the eyesight I had. Who knows- it could've been the sunlight. I guess I should eventually go in to get my eyesight checked but you know - the only time I really noticed that I was near-sighted was while in college, trying to read the whiteboard under harsh fluorescent lights across the lecture room. When I'm outside, I can spot a hawk carrying a mouse from across a field. So - you know. Anecdotal but my experience. I guess it just depends.

  • @_Loken
    @_Loken3 жыл бұрын

    "When you hear about epidemics, it usually has to do with some frightening virus like HIV or Ebola." Tell me more about such viruses, man from the past.

  • @LupeSunglass

    @LupeSunglass

    2 жыл бұрын

    Yes, yes.

  • @AOTDagents
    @AOTDagents2 жыл бұрын

    It was so intriguing to me how much more definition i could see sometimes on a sunny day.

  • @SindriMjolnir
    @SindriMjolnir8 жыл бұрын

    I guess growing up in Iceland doomed my eyes. We have almost no sunlight in winter and then 24 hour sun in the summer months. That means my dopamine cycle isn't properly fucked

  • @HatsonFGC

    @HatsonFGC

    8 жыл бұрын

    +SaraMargret Sama hér. Þetta er samt ekki alveg logical, af því minur minn er með algjörlega fucked augu, og hann var meira útimaður en ég. Ég er með jafn slæma sjón og faðir minn og bróðir minn. En vinur minn hafði ekkert þannig í sinni fjölskyldu... Kannski eitthvað mutation, en samt... Held að sólarljós sé ekki það eina sem hefur áhrif á þetta. Held að stór partur af því séu einfaldlega bara gallar í DNA, sem hafa komið upp meira á 20. og 21stu öld, og mögulega hefur minnkuð útivist fólks í tæknivæddum samfélögum eitthvað með það að gera.

  • @SindriMjolnir

    @SindriMjolnir

    8 жыл бұрын

    +Pajama Llama (Hatson) Ég er allavega með -4,75 sem er alveg hryllileg sjón. Ég bókstaflega sé ekki rassgat án gleraugna.

  • @HatsonFGC

    @HatsonFGC

    8 жыл бұрын

    SaraMargret Sama hér sko. Síðast þegar ég checkaði var ég -4 og -4.5. Mögulega kringum það sama og þú núna.

  • @UserName-pi9no

    @UserName-pi9no

    8 жыл бұрын

    Dopamine? Do you mean melatonin?

  • @SindriMjolnir

    @SindriMjolnir

    8 жыл бұрын

    +Michael Braun lol yes. Hahaha, don't know why I wrote dopamine :P

  • @jeco0357
    @jeco03578 жыл бұрын

    So if I look at the sun my nearsightedness will be cured? PRAISE THE SUN!

  • @ScienceMarc

    @ScienceMarc

    8 жыл бұрын

    You'll just go blind if you stare at the sun

  • @EvanRustMakes

    @EvanRustMakes

    8 жыл бұрын

    +lisa lavergne and that means no more near sightedness

  • @AoSCow

    @AoSCow

    8 жыл бұрын

    +lisa lavergne let investigate that hypothesis.

  • @Deathmachine513

    @Deathmachine513

    8 жыл бұрын

    +Dazidan ALL HAIL THE NIGHTMARE.

  • @LuciusC

    @LuciusC

    8 жыл бұрын

    +jeco0357 If you look directly at the sun, your sightedness will be cured... trolol

  • @quinton1630
    @quinton16304 жыл бұрын

    8:22 Wouldnt that be crazy? A terrifying virus that creates a cultural identity of staying indoors? Hah, hah.

  • @13_cmi

    @13_cmi

    2 жыл бұрын

    Yeah.

  • @leflavius_nl5370

    @leflavius_nl5370

    2 жыл бұрын

    Yeah.

  • @thehighground3630

    @thehighground3630

    2 жыл бұрын

    @@tynj4173 not in Australia lol.

  • @idontknowhowyoufoundme564

    @idontknowhowyoufoundme564

    2 жыл бұрын

    THE SUN IS A DEADLY LAZER! *not anymore there's a blanket* *NO* why can't we go on land again? *THE AIR HAS A DEADLY VIRUS*

  • @Kasperhp7410
    @Kasperhp74102 жыл бұрын

    Fascinating. I should spend more time indoors to correct my farsightedness then.

  • @FilbieTron
    @FilbieTron7 жыл бұрын

    This is absolutely fascinating!! Thank you for shedding light on it.....😏🤓

  • @CesarRodriguez-ht9oi

    @CesarRodriguez-ht9oi

    7 жыл бұрын

    FilbieTron would you say that its.... eye opening?

  • @sharcc2511

    @sharcc2511

    6 жыл бұрын

    . . . s t o p

  • @gevoian

    @gevoian

    6 жыл бұрын

    Yeah this makes sense because most of my childhood i saw perfect, fastforward to now, im 20 and found out I need glasses, the past few years I had trouble seeing from a distance, I have been indoors mostly these past few years compared to my childhood and teens where I went outside more.

  • @peter-peterpumpkineater4982

    @peter-peterpumpkineater4982

    5 жыл бұрын

    boo

  • @wecantbefriends1660

    @wecantbefriends1660

    5 жыл бұрын

    We can't be friends.

  • @ganaraminukshuk0
    @ganaraminukshuk08 жыл бұрын

    So, staring directly at the sun isn't good for our eyes but not enough exposure to sunlight isn't good for our eyes, either. Where's the butter zone?! Also, #NearsightedMasterRace

  • @waldomarek

    @waldomarek

    8 жыл бұрын

    +Ganaram Inukshuk just go outside, without staring in the sun?

  • @insect212

    @insect212

    8 жыл бұрын

    +Ganaram Inukshuk This video didn't say anything about staring at the sun being bad.

  • @ganaraminukshuk0

    @ganaraminukshuk0

    8 жыл бұрын

    I'm referencing the common knowledge that staring directly into the sun isn't good for your eyes as the extreme end of exposing your eyes to sunlight.

  • @BobIV123

    @BobIV123

    8 жыл бұрын

    +Ganaram Inukshuk I think there was a scishow episode that talked about how bad staring at the sun is.

  • @ganaraminukshuk0

    @ganaraminukshuk0

    8 жыл бұрын

    BobIV123 Yeah, that was it.

  • @CaptainSword_Lady
    @CaptainSword_Lady2 жыл бұрын

    I love that you lot talked about this, if you are looking for a good follow-up topic, there is a lot of propaganda and debate around some old early 20th century science saying that improving vision through eye exercise is possible. Some folks even quote the bates method or other methods from that time period. I would love to hear what ya'll come up with about that stuff!

  • @DoctorsSong
    @DoctorsSong3 жыл бұрын

    I found out I was nearsighted when I was 7 or 8. I spent most of my childhood outside (until I discovered books were much more enjoyable to read inside). My mom was worried I wouldn't want to wear my glasses. Never was a problem, I couldnt believe how much I was missing without my glasses!

  • @gabrielpowers766

    @gabrielpowers766

    2 жыл бұрын

    I discovered I was nearsighted at 7 or 8 too. I was outside a normal amount I think. It was a long time ago. I went through glasses, hard contacts, soft contacts, back to glasses, thought about LASIK and the like but it was new and never got it, then got early severe cataracts and had cataract surgery. Now I can see far away great but need glasses for close up. Exactly the opposite as the whole rest of my life.

  • @GizmosMonster
    @GizmosMonster8 жыл бұрын

    my father is nearsighted (but just recently after he turned 45) and my mother is farsighted. i'm the 3rd child and the only one who is nearsighted. By older brother played soccer outside, while i spent my hours in a swimming pool or in front of the tv (i never joined the outdoor activities). BUT i do remember playing a lot outside when i was a kid, and we were outside for at least an hour in school or kindergarten. so it could make sense that sunlight works, as my brother got double the amount of time outdoors.. it has to be combined with your genes, as my sister was also a swimmer and got no problems with her sight.

  • @TragoudistrosMPH

    @TragoudistrosMPH

    6 жыл бұрын

    Did you swim indoors or outdoors?

  • @Poedoco

    @Poedoco

    5 жыл бұрын

    oh heck, i'm the same when it comes to the first sentance

  • @sbellaharris

    @sbellaharris

    5 жыл бұрын

    Yes but you close your eyes while swimming most of the time.

  • @Ayverie4
    @Ayverie47 жыл бұрын

    THANK YOU for talking about this. It blows my mind how this is not a HUGE THING. I am genuinely afraid that I am going to be blind by 50. WHY IS NO ONE ELSE WORRIED ABOUT THIS ??! If they are, why the heck haven't I heard them talking about it?

  • @thomasr.jackson2940

    @thomasr.jackson2940

    7 жыл бұрын

    Ayverie Ablaze I agree. It is very important. I suspect that it doesn't get more attention because most sufferers get corrective glasses easily (at least in developed countries, which is where "more attention" seems to matter), and wearing glasses is well accepted, even fashionable. It doesn't strike people as the problem it really is.

  • @Ian-bf4yk

    @Ian-bf4yk

    7 жыл бұрын

    Ayverie Ablaze well I was born with bad eyesight so I was screwed from the get go.

  • @katherinerichardson2273

    @katherinerichardson2273

    7 жыл бұрын

    Ayverie Ablaze cause the main cause of blindness in the elderly is macular degeneration. it's unrelated. however I know what you're getting at mine only stopped worsening a year or so ago at 25

  • @HeatherVillalta

    @HeatherVillalta

    4 жыл бұрын

    I am 27 and have bad eyes. They finally stopped getting worse a couple of years ago, but from around 6th grade to 12th grade, they went from normal to me being horribly near-sighted. Now, without my glasses, anything more than arms length away is a blur of color without shape and definition. I’m worried I might one day be so blind that losing my glasses means I can’t function.

  • @deannajohnson3933
    @deannajohnson39332 жыл бұрын

    This was so interesting.

  • @mad_scientist5597
    @mad_scientist55972 жыл бұрын

    Wasn't there a wave of nearsightedness in children who were inside as a result of pandemic? I guess I'm doomed to live nearsighted, but I hope the world is gonna progress on this, so that later people don't. Being indoors all day sucks and maybe it'll be our decaying eyesight that will force us out haha. Or maybe we'll just put the lights on in classrooms during the day and give kids special glasses or some contraption like that to prevent myopia. lol

  • @sabersky1134

    @sabersky1134

    2 жыл бұрын

    If full spectrum lights weren’t so freaking expensive I would say that could be an option.

  • @JohnDoe-em7of

    @JohnDoe-em7of

    2 жыл бұрын

    Nah humans don't change, we change reality to suit us which means we will find a way to fix this and move on. Definitely not changing our habits over this.

  • @Papershire
    @Papershire6 жыл бұрын

    I have to say, I appreciate how gentle, smooth and calming your voice is. Thumbs up to you!

  • @ZemplinTemplar
    @ZemplinTemplar8 жыл бұрын

    Very interesting ! :-) There's an old proverb in my country, "Where the sun doesn't go, a doctor goes.". Even in older periods, people clearly understood some outdoor activity in natural sunlight can be medically beneficial, even if they didn't understand the exact mechanisms behind it. Well, neither do we, not entirely yet (as you've pointed out). But it's still an intriguing hypothesis and it does seem to add up logically.

  • @oliviapilson
    @oliviapilson3 жыл бұрын

    Love it when youtube makes fun suggestions for me during a pandemic. (Also love sci shoe this was actually super interesting)

  • @levicrossdechantel
    @levicrossdechantel2 жыл бұрын

    I started getting symptoms of depression at 8 years old, also the same time as when I started developing myopia and also when I started wearing glasses. Not only that, (I'm Asian) my grandmother was always strict about my education and I was pressured to be a straight A's student. In fact, she even made me solve advanced math problems during summer break from morning to night. At 17, I was officially diagnosed with depression and by that time, I learned that sunlight and chocolates helps stimulate dopamine. I'm 26 now and I have horrible vision, but I try to get as much sunlight as I can now.

  • @bellasage518
    @bellasage5187 жыл бұрын

    Science explains why smart nerds wear glasses...hmm..

  • @musekek3935

    @musekek3935

    7 жыл бұрын

    kitty kat irony, huh.

  • @ssundiall2

    @ssundiall2

    6 жыл бұрын

    As much as I want to believe I'm snare I still can't do 6th grade math effectively so yeah.

  • @baj800

    @baj800

    6 жыл бұрын

    Soup Medic, I believe that we can extrapolate your math skill or lack thereof by the fact that you stated you are "snare". Keep on keeping on, you can be as "snare" as you want.

  • @ssundiall2

    @ssundiall2

    6 жыл бұрын

    baj800 leave me alone I'm a Highschool dropout with no friends, I don't need this negativity.

  • @gavinstarks2761

    @gavinstarks2761

    6 жыл бұрын

    Thats just a Hollywood stereotype

  • @kit_the_inevitable
    @kit_the_inevitable6 жыл бұрын

    "and spending more time indoors in dim light could be to blame" *opens curtain *

  • @africanprince8654

    @africanprince8654

    3 жыл бұрын

    *Me already having glasses*

  • @letronix6243

    @letronix6243

    3 жыл бұрын

    same same sAmé

  • @foggy9900
    @foggy99002 жыл бұрын

    this video made my eyes water

  • @marsyasf
    @marsyasf4 жыл бұрын

    Thank you for answering my question though:D

  • @marekblaisx
    @marekblaisx8 жыл бұрын

    He just gave our parents a reason to force us to explore the outside world. Unsubscribed.

  • @impalabeeper

    @impalabeeper

    8 жыл бұрын

    +Digglemir How dare they subject us to the watchful eyes of perverts and make us interact with assholes!

  • @cmb271

    @cmb271

    8 жыл бұрын

    +impalabeeper There are no assholes in the woods, besides the tree knots that look funny.

  • @R0YJ0YJ0Y
    @R0YJ0YJ0Y4 жыл бұрын

    What about how far these people can look, maybe the eyes adapt to having to only look in distances of .5 to 100ish meters because there are buildings everywhere

  • @foolapprentice3321

    @foolapprentice3321

    4 жыл бұрын

    Farmers?

  • @jeff__w

    @jeff__w

    4 жыл бұрын

    @YamFestival Well, there might be an inverse correlation between seeing _far_ things (as you might outdoors) and myopia.

  • @Luxalpa

    @Luxalpa

    4 жыл бұрын

    @@jeff__w If it was that easy, science would have figured this out already a century ago.

  • @eliad6543

    @eliad6543

    4 жыл бұрын

    @@Luxalpa No it wouldn't, as you can see they aren't sure what the cause is even now, and some of those answers are even simpler than that. The simplicity of an answer doesn't make it easier to get to. What matters is what we originally think the answer is, how far away that is from the truth, and how easy it is to find the truth using available methods for studies.

  • @Laeiryn

    @Laeiryn

    2 жыл бұрын

    I moved from a pretty crowded city at age 6 to a relatively sprawly suburb/rural area, and only then became myopic (and took a decade, still living in the burbs, to become "highly" myopic, where I have stayed for *another* 20 years). But my eyes DID turn from blue to hazel in response to the increase in sunlight, especially from lateral angles where buildings in the city blocked it. Took about two years.

  • @FelixPheonix
    @FelixPheonix2 жыл бұрын

    That feeling when you're nearsighted and photosensitive but now you're being told to spend more time in the sun...

  • @yoface938

    @yoface938

    2 жыл бұрын

    Wear a burka

  • @cooper_76

    @cooper_76

    2 жыл бұрын

    tf is photosentive

  • @windowwatcher9161

    @windowwatcher9161

    2 жыл бұрын

    @@cooper_76 being photosensitive means you are more sensitive to light and in turn bright light

  • @menouaaa

    @menouaaa

    2 жыл бұрын

    @@yoface938 this guy right here is a genius everyone

  • @cooper_76

    @cooper_76

    2 жыл бұрын

    @@windowwatcher9161 bruh.... grow up, imagine being sensitive to light🤣

  • @kepspark3362
    @kepspark33622 жыл бұрын

    Thanks!

  • @techguy404
    @techguy4044 жыл бұрын

    I've been nearsightedness since I was a kid... Been outside almost everyday when I was younger... Still wore glasses.

  • @itzpurplegirl

    @itzpurplegirl

    4 жыл бұрын

    Techguy404 What age would you say is not a kid anymore?

  • @lazarus8453

    @lazarus8453

    4 жыл бұрын

    Because your nearsightness is caused by genes .

  • @ThrustersX

    @ThrustersX

    3 жыл бұрын

    Same here.

  • @DrorF

    @DrorF

    3 жыл бұрын

    "X causes Y" does not imply "not-X causes not-Y"

  • @suspicious_door

    @suspicious_door

    3 жыл бұрын

    Genetics still play a decently large role in the matter, and I guess you got the short end of the stick, although at least you spent a lot of time outdoors or else it probably would have been even worse

  • @archer9338
    @archer93384 жыл бұрын

    To me it seems that the obvious next step would be to develop indoor lights that simulate sunlight, preferably without the UV, or lower levels of it. And do tests involving those lights.

  • @lovepeacebliss

    @lovepeacebliss

    4 жыл бұрын

    just go outside. Tech is not the answer

  • @archer9338

    @archer9338

    4 жыл бұрын

    @@lovepeacebliss most people are stuck inside for 8-12 hours a day for work or school. If we can develop lights that prevent eye degradation, we would be fools not to. Yes, tech is the answer.

  • @lovepeacebliss

    @lovepeacebliss

    4 жыл бұрын

    @@archer9338 stuck inside? Are you talking about a facist regime, jail cells, solitary confinement? For me, health goes above everything. So to these people I say open a window, move into a different cubicle, get a different job. Tech will never replace the real thing. No matter how much marketing they do.

  • @TheYoghurt42

    @TheYoghurt42

    4 жыл бұрын

    @@lovepeacebliss What about children at school? It's not quite a jail cell but it's pretty close - they don't have a choice about whether to be there or not, it is all decided by the adults in their life. Of course it'd be good if we could restructure schools to give kids more natural light, but if the real goal is stopping eye damage then it doesn't matter whether that's achieved with natural or artifical light.

  • @archer9338

    @archer9338

    4 жыл бұрын

    @@lovepeacebliss you are clearly a fool. I'm done talking to you.

  • @sreedharaswamy964
    @sreedharaswamy9642 жыл бұрын

    Thank you so much for the great information, sir. Hope my 10 yr old daughter's vision improves. She is just 10 yrs, already her eye power is -5. Plz pray for my daughter. Plz keep sharing such good information. Actually, our doctors will not educate us in detail as u explained.

  • @potatoman7895
    @potatoman78952 жыл бұрын

    I would love to see an updated version of this video to reflect more recent research, if there is any

  • @atjatkatkaktark
    @atjatkatkaktark8 жыл бұрын

    Just a theory as another possible contributing factor is that short of staring out a window when outside you are capable of looking much further away than indoors and quickly transitioning to a closer focus a simple exercise that may naturally help the eye develop its capabilities.

  • @deoc4114

    @deoc4114

    8 жыл бұрын

    That's my thinking as well. If looking all day at near books makes nearsightedness, then all day looking at a distance could prevent it...or even cause farsightedness

  • @Howtheheckarehandleswit
    @Howtheheckarehandleswit8 жыл бұрын

    Can you do an episode on the stupidity epidemic?

  • @harmonicpsyche8313

    @harmonicpsyche8313

    7 жыл бұрын

    You mean the smartness epidemic, where the average IQ is consistently increasing at 3 points per decade in pretty much every developed country and age group? Look up the Flynn effect. You won't find a "stupidity epidemic."

  • @kirkturner9768

    @kirkturner9768

    7 жыл бұрын

    +HarmonicPsyche The BLM and third wave feminist movements beg to differ.

  • @harmonicpsyche8313

    @harmonicpsyche8313

    7 жыл бұрын

    Kirk Turner That's a fallacy of faulty generalization (en.wikipedia.org/wiki/Faulty_generalization). You are falsely implying that the traits of a nonrandom, nonrepresentative group can be generalized to the entire population.

  • @kirkturner9768

    @kirkturner9768

    7 жыл бұрын

    +HarmonicPsyche Yet the blm movement represents a small minority of the black population. Many blacks are of the opinion that blm is doing far more to hurt the community than to help it.

  • @harmonicpsyche8313

    @harmonicpsyche8313

    7 жыл бұрын

    Kirk Turner Did I attempt to defend either of the movements that you mentioned? My point was that neither the BLM movement nor the third-wave feminist movement is a representative sample of the population. To say that characteristics of either group can be used to draw inferences about the general population is a fallacy, as I previously mentioned. "I said no such thing." I pointed out a statistical trend, and you offered nonrepresentative groups as counterexamples. Because trends frequently have outliers, one cannot use isolated examples to show a trend. However, if your argument does not include "stupidity is increasing" or "intelligence is not increasing," then the misunderstanding is my fault and I apologize. "You have improperly inferred such a fallacy to so you can go all SJW." You do not know my motive(s), and even if you did, they are irrelevant to the validity of my argument(s). Claiming that motives are relevant - which I am admittedly unsure if you did, but I mention this just in case you did - is a fallacy because it attacks the source of an idea instead of the idea itself (study.com/academy/lesson/attacking-the-motive-fallacy-explanation-examples.html). To assess whether or not stupidity is increasing, one must repeatedly take a random sample of the population and find the average IQ. Then find the trend, as Flynn did.

  • @Zeverinsen
    @Zeverinsen2 жыл бұрын

    The mention of being outside affecting vision is interesting, considering how weather can wear on your eyes over time. I most definitely believe that your environment will affect your eyesight over time.

  • @saminyead1233
    @saminyead12334 жыл бұрын

    Alright! Imma head out and take a walk right now!

  • @TuesdaysArt
    @TuesdaysArt7 жыл бұрын

    I guess this is why the "smart kids wear glasses" stereotype went around.

  • @Alex-uy7pc

    @Alex-uy7pc

    4 жыл бұрын

    stereotypes are usually based in truth no matter how upsetting they are

  • @angelamazakas2624

    @angelamazakas2624

    4 жыл бұрын

    @@Alex-uy7pc more like stereotypes are often self-fulfilling prophesies... i.e. a person *believes* they should be a certain way, so they do

  • @WanderTheNomad

    @WanderTheNomad

    4 жыл бұрын

    @@Kahzu Stereotypes are usually based off of a minority of a population. That minority could even be 1 person.

  • @TheShizzlemop

    @TheShizzlemop

    4 жыл бұрын

    ​@@WanderTheNomad you've simplified it far too much for that statement to have any meaning in educating someone on stereotypes which appears to be your goal. which i find funny as stereotypes are in themselves oversimplifications of an idea person or thing. you're basically stereotyping stereotypes. lmao en.wikipedia.org/wiki/Stereotype also why are people even replying to this comment thats two YEARS old? and on a video thats almost twice that

  • @mightza3781

    @mightza3781

    4 жыл бұрын

    Well, there are cases of kids who were held back a grade because of poor performance only for parents to realize they were near sighted and couldn't make out the chalkboard during lessons.

  • @dfpguitar
    @dfpguitar4 жыл бұрын

    trying to imagine chicks wearing minituare goggles

  • @sjcross8

    @sjcross8

    4 жыл бұрын

    I feel like that’s defiantly one of the pictures they should’ve included

  • @shawnmakiri4435

    @shawnmakiri4435

    3 жыл бұрын

    I'm doing a science degree and when I get back to university I'm going to propose this chick experiment cause its be so cute

  • @MaryAnnNytowl

    @MaryAnnNytowl

    3 жыл бұрын

    @Sergio putting goggles, or at least vision-blocking pieces/equipment, onto chicks was common a long time ago, as it kept them from pecking each other and hurting each other (sometimes seriously!). Now, red light bulbs are used in brooders, to prevent them from seeing things that might keep them pecking at each other, like a bloody new feather. A bit of a lesson about little chicks: When the feathers first start coming in, there's a blood supply to the part where it comes from the skin, and if it gets pecked, it will bleed. And they will keep pecking at a blood spot, up to and including killing the bleeding chick. So, glasses or goggles would be a vast improvement to letting chicks get pecked to death. And that means literally pecked to death. I have seen the results, long ago, and it is horrific. Not something someone forgets about.

  • @larsswig912

    @larsswig912

    3 жыл бұрын

    Stuart little?

  • @blew1t

    @blew1t

    3 жыл бұрын

    i imagined them taking vision tests at the end of the experiment "ok, which is clearer, 1.. or 2?.. 1.. or 2.." "quack!" "kevin you need to take this more seriously"

  • @anizm.lys.9526
    @anizm.lys.95262 жыл бұрын

    As a firstborn, who has been mega depressed a few years before this video was posted and a neurodivergent who has lack of dopamine receptors, I can say I spend almost all of my teen hood in bed behind closed curtains. Got siblings who are 6 to 11 years apart from me, and they all go out when I didn't and the kids aren't blinded by nearsight like me

  • @lindaliestman4397
    @lindaliestman43972 жыл бұрын

    People used to balance viewing time between long distance viewing and close-up viewing. Many people today are spending most of their time doing close viewing. Therefore, nature has decided that close viewing people don’t need their good distance viewing anymore. I have spent much time outside, am a hiker and backpacker who looks into the distance daily. My optometrist pointed out to me 10 years ago that my distance vision was far better than average because I am outside so much looking into the distance. I tell my staff, who work at computers all day, to take a walk outside at breaks to use their distance vision, and also to get up and look out the window into the distance once every 2 hours.

  • @kiiturii

    @kiiturii

    2 жыл бұрын

    watch the video it literally disproves "distance viewing"

  • @annaairahala9462

    @annaairahala9462

    2 жыл бұрын

    Did you even watch the video...

  • @TheKerberoses
    @TheKerberoses5 жыл бұрын

    Scishow - "Good thing sunlight is, free!" Government- "Lol one sec"

  • @icedirt9658

    @icedirt9658

    4 жыл бұрын

    TheKerberoses i think you mean corporations lol

  • @RoyalFusilier

    @RoyalFusilier

    4 жыл бұрын

    If somebody is going to start charging people for sunlight, or air, or anything, it'll be a corporation. Maybe even on Earth, when they've finished ravaging the environment to the point it can no longer easily sustain human life.

  • @jasonmoore3832

    @jasonmoore3832

    4 жыл бұрын

    Next thing you know the commiefornians are gonna start taxing sunlight

  • @dfpguitar

    @dfpguitar

    4 жыл бұрын

    it's more likely to be a company like nestle to try to sell you something that is free.

  • @jasonmoore3832

    @jasonmoore3832

    4 жыл бұрын

    dfpguitar the problem with a company trying to sell it to me is they can’t force me to buy it, they can’t point guns at me and take me to jail if I don’t pay, the government can and has

  • @muhammadkarimov400
    @muhammadkarimov4006 жыл бұрын

    Wauw! This is one of the best videos which I have ever watched in KZread so far!

  • @dt6653
    @dt66534 жыл бұрын

    Will have to put the TV outdoor now.

  • @kt-sr4ir
    @kt-sr4ir2 жыл бұрын

    Yeah it makes sense, I had no vision problems, and started developing them when I became a bit of a shut in.

  • @Macconator2010
    @Macconator20108 жыл бұрын

    Mother: Long sighted Father: short sighted Sister: Long sighted Me (first born): perfect 20/20 I'm the 1% bitches! 🤘🏻

  • @herp_derpingson

    @herp_derpingson

    8 жыл бұрын

    +Macconator2010 I think it balanced out

  • @Macconator2010

    @Macconator2010

    8 жыл бұрын

    +Herp Derpingson haha if only it worked that way

  • @Macconator2010

    @Macconator2010

    8 жыл бұрын

    +Genos Demon Cyborg Well nothing can be perfect, but it's as near enough the perfect ratio.

  • @VeggieBond

    @VeggieBond

    8 жыл бұрын

    It'll get ya when you least expect it...

  • @Macconator2010

    @Macconator2010

    8 жыл бұрын

    +Genos Demon Cyborg Righteo however, the optometrist said "better than 20/20", I thought here was no such thing. None the less, meaningless details aside, my vision is brilliant, parent and sister have shit vision. My point was less to do with the specifics and rather the irony.

  • @dannynip
    @dannynip7 жыл бұрын

    Could be on the rise even more as kids can't even go to the park by themselves anymore without someone reporting it to the cops.

  • @Someasshole1000

    @Someasshole1000

    7 жыл бұрын

    that sounded really sketchy tbh.

  • @Shetasen

    @Shetasen

    7 жыл бұрын

    Someasshole1000 your does but there are cases where parents trust their kids to walk to their friends houses just down the road and the parents get cited for that shit.

  • @potmki6601

    @potmki6601

    6 жыл бұрын

    what are you even talking about i wonder

  • @Ian-bf4yk

    @Ian-bf4yk

    6 жыл бұрын

    From what I can tell only in America

  • @TragoudistrosMPH

    @TragoudistrosMPH

    6 жыл бұрын

    Haha, I did feel concerned when I saw a child, around 8yrs old, walking alone to school. I'm a millenial so I rarely walked completely alone as a kid, but a group of kids that age was pretty normal.

  • @MarianoTufro
    @MarianoTufro2 жыл бұрын

    He can explain science to me all day.

  • @TheSuperRee
    @TheSuperRee2 жыл бұрын

    This is so fascinating. You could probably draw a correlation with poor mental health in childhood and nearsightedness. I spent plenty of time outside as a kid, but I definitely have some difficulties with brain chemicals like dopamine and serotonin, and always have. So I just wonder if you could draw the same sort of lines with myopia and childhood mental illnesses that affect dopamine responses.

  • @husaindoodhwala9940
    @husaindoodhwala99404 жыл бұрын

    Please make a part 2 of this video in 2019

  • @JadeCaro
    @JadeCaro7 жыл бұрын

    Well... that explains my near sightedness. I'm a freaking vampire, I hate the sun and its heat and I prefer staying inside and the night. My older brother isn't nearsighted, he's more outdoorsy than me. Oh, I also have a higher education degree than he does. Makes total sense now

  • @lexiejaffas7220

    @lexiejaffas7220

    6 жыл бұрын

    I totally relate. I'm a vampire and I have nearsightedness too

  • @caveymoley

    @caveymoley

    5 жыл бұрын

    "I...I live among the creatures of the night!"

  • @martinnyberg9295
    @martinnyberg92952 жыл бұрын

    That’s funny. After hearing that spending time outside prevents myopia, my first hypothesis would be that actually having to train your eyes to focus on things further away than the four walls at home is good. But these guys jumped right away to checking if sunlight does it? 😂😁👍🏻

  • @eltaconoche3078

    @eltaconoche3078

    2 жыл бұрын

    This makes me wonder if it's the stimulation for the nutrient production that affects eye health over time~ now I'm gonna look up if vitamin D affects acuity, lol

  • @eltaconoche3078

    @eltaconoche3078

    2 жыл бұрын

    Aaand it does. Apparently, it helps prevent glaucoma, dry eye syndrome, and cataracts, as well as contributes to healing and fighting cancer. Neat!

  • @isaacsrandomvideos667
    @isaacsrandomvideos6672 жыл бұрын

    I might have this after lockdown

  • @MikePaquette
    @MikePaquette8 жыл бұрын

    So why am I farsighted?

  • @GeorgePerakis

    @GeorgePerakis

    8 жыл бұрын

    +Mike Paquette My parents told me that I'm farsighted because the doctor squeezed my head too much when my mother was trying to give birth to me and my oversized head, so my eyes ended up the wrong shape and now I've got +5 in one eye and +6 in the other, and 2.5 astigmatism on each.

  • @MikePaquette

    @MikePaquette

    8 жыл бұрын

    That's interesting because my father reports my mother thought that the doctor who delivered me squeezed a little too hard with the whatever it was. I was actually trying to find a cause of mental illness(es) like, "was I ever dropped or suffered any kind of head trauma?" kind of questions.

  • @GeorgePerakis

    @GeorgePerakis

    8 жыл бұрын

    ***** Yeah, my mother said something about some sort of oversized tweezers they used to get me out of there too, I was a stubborn one apparently. Infant skulls are indeed quite soft and maleable. Though I haven't exhibited any sign of mental illness yet, other than some minor dyslexia. Causes of mental illness tend to be a bit more complicated than this.

  • @iota-09

    @iota-09

    8 жыл бұрын

    +Mike Paquette i think that rather being sunlight the fix, is having a "no focus point" the fix. think about it, when you're in a house or most generally studying and on the pc, you have always a fixated point where you focus, almost the same distance, on the other hand, when you're outside generally your focus point distance changes drastically every couple seconds. now i'm not sure about the medical points i could give, but i think that focusing the eyes at the same distance point for too long-be it in close or long distance- can give eye problems related to focusing them.

  • @MikePaquette

    @MikePaquette

    8 жыл бұрын

    Very interesting

  • @andrewandrew599
    @andrewandrew5997 жыл бұрын

    At the end, he mentioned that people who went outside more, even when it wasn't sunny, still showed fewer incidences of nearsightedness. Is it not logical that being outside gets you to look at things which are further away and exercises your eyes more?

  • @thomasr.jackson2940

    @thomasr.jackson2940

    7 жыл бұрын

    andrewandrew599 it is certainly plausible and is worthwhile investigating. It breathes some life into the old "overuse" hypothesis he mentioned in the beginning. Near work has been pretty much abandoned as a cause, but lack of "far work" may possible be a culprit.

  • @thickestofmints4058

    @thickestofmints4058

    7 жыл бұрын

    andrewandrew599 excercising isn't going to just shorten you eyeball. Especially if you're an adult

  • @andrewandrew599

    @andrewandrew599

    7 жыл бұрын

    Looking at objects far away requires your eye to change shape. The change of shape is mediated by muscle movement. I have no idea why you are relating physiology to being and adult.

  • @Pobe16
    @Pobe162 жыл бұрын

    So to get better sight, get yourself (or your kids) to the bright outdoors… I live in Scotland…

  • @Ahrpigi
    @Ahrpigi2 жыл бұрын

    This is really interesting to me, because I didn't need glasses when I was little but as I progressed through junior high and high school I needed them worse and worse. That correlates with me gradually spending more time indoors, and also with growing depression symptoms (lower dopamine).

  • @swabby429
    @swabby4294 жыл бұрын

    Mom was right when she told us to go out to play.

  • @Finkelfunk
    @Finkelfunk8 жыл бұрын

    That sun-light theory sounds plausible. I got my first glasses when I was 14. I was -1,25 diopters on both eyes. With 17 I got my second pair of glasses, I was -1,75 dioptres at that time. Now at the age of 19 I see just as bad with glasses as I did right before I got my second glasses. Between 14 and 17 I used to be outside every day for at least 5 hours. Now I stopped going outside that frequently because, well, memes. So It is actually really plausible.

  • @FalloutUgglan

    @FalloutUgglan

    8 жыл бұрын

    +Finkel - Funk If memes isn't worth getting nearsighted for nothing is

  • @RazgrizNinjaEX8

    @RazgrizNinjaEX8

    8 жыл бұрын

    My worst jump in diopter was during my most outdoor active part of my life, oddly. I was outside every day as long as I could be, as well as during passing periods and lunch, considering local schools tend to be open air

  • @Finkelfunk

    @Finkelfunk

    8 жыл бұрын

    Randall Peralta Weird. But I guess exceptions confirm a rule?

  • @coreylando6608

    @coreylando6608

    8 жыл бұрын

    Anecdotes ≠ Evidence, so your experience doesn't confirm its plausibility, but it's neat to see a potential example of the phenomenon in your own life.

  • @Finkelfunk

    @Finkelfunk

    8 жыл бұрын

    Corey Lando As I said, it wouldn't be evidence since I am a single case in a "study". But I can definitely see correlating factors in my personal life and the results of this study.

  • @virtualalias
    @virtualalias2 жыл бұрын

    Dude made the nerds and glasses / "glasses make you look smart" connection. Very cool.

  • @BlueCatArt
    @BlueCatArt2 жыл бұрын

    Finally I got a proper explanation