Difference Between Myopia and Hyperopia | Near and Farsightedness | Physics | Letstute
Hello Friends,
Check out our video on "Difference Between Myopia (Near-sighted) and Hyperopia (Far-Sighted)"
What is myopia or short sightedness and Hyperopia or Hypermetropia or long sightedness?
In the human eye, there are a lot of different parts, but we are focused on the lens and the ciliary muscles which helps us to see near and far objects. When you are looking at something which is far away, the ciliary muscle stretches the lens and reduces the focal length which makes the object clear and when the objects are close, the ciliary muscles compress and increase the focal length.
When the light falls on the lens, it converges and forms an inverted image on the retina. This image is later made erect in the brain and that’s how we see the world.
Now what is myopia or short sightedness?
Now in the case of myopia or short sightedness, the image is formed in front of the retina instead of the retina. In this case people can see close objects clearly but the objects which are farther away are blurry. This happens due to elongated eyeballs and because of that, the distance between the lens and the retina is increased which makes the light rays converge in front of the retina. In the case of nearer objects, this doesn’t happen. The light rays get converged on the retina and hence they can see closer objects clearly. This can be corrected with the simple use of a concave lens.
What is Hyperopia or Hypermetropia or long sightedness?
The opposite of myopia is hyperopia, where the image is formed behind the retina and because of this, objects which are far can be seen clearly and objects which are close are blurry. The reason for the defect is that the eyeball is compressed and the focal length is reduced which causes the focal point to fall behind the retina. This can be corrected with the simple use of a convex lens
The difference between myopia and hyperopia is also dealt in this video.
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Пікірлер: 100
I ❤️this channel. Main reason is the way of explaining makes it much easier to understand.
@Letstute
4 жыл бұрын
Hello Thankyou For your Feedback Check out more videos on our channel kzread.info
i love your voice and way it makes me clear to understand because i'm not good at English 😂
@88832
3 жыл бұрын
She is India
@wtf-anshikaa7422
3 жыл бұрын
@@88832 yep i know
@dharmendrakumarsingh9757
2 жыл бұрын
@@88832 indian*
Good video🙏
Nice video... Thanks Letstute..
Now i am cleared with your short and sweet video
Excellent👍💯👏
Thank you very much Actually I have a lesson in this topic This video is really a nifty one for me... Tq very much
@Letstute
4 жыл бұрын
You are most welcome
I always confused between them. But today you have cleared my all doubts.. Thnxs
@Letstute
4 жыл бұрын
Thank you For your feedback your comment is Valuable for us
@sukamalshil2180
4 жыл бұрын
@@Letstute omg you replied
Good educative video
At 2.44 there is a correction i suppose, because stretching of ciliary muscles causes thining of lens which increases the focal length but you said focal length decreases, plz correct me if i am wrong
I like it 😊 very much and understand ☺️👍 each nd every point . 💓 thanks mam
@Letstute
4 жыл бұрын
Thank you for your comment. Keep Watching Keep learning
Nice video mam I have learnt it very carefully
Thanks for giving me a clear information thank u so much 😊👌👌👌❤️
@Letstute
3 жыл бұрын
Thank you for your comment. Keep watching keep learning
I subscribed ✌️✌️superb
I cleared by this video. And hope of scoring good mark in the exam if it comes on the exam
@Letstute
4 жыл бұрын
Thank you for your comment. Please do try them. Good luck!
Very useful ❤️❤️
Very nice video
Thank u so much for the brief explanation ❤
@Letstute
2 жыл бұрын
You're welcome😊
Thank you very much and please make more video
Very very useful video.... Thanks for the video🙏🙏...
@Letstute
2 жыл бұрын
So nice of you Sanyogita! Keep watching :)
Tq so much. It is soo helpful for me😊.
Super explanation
Thank you You helped me to clear all my doubts
@Letstute
2 жыл бұрын
Glad to hear that!
Great video!! Thank you so much :D
@Letstute
2 жыл бұрын
Most welcome
Thanks a lot it was helpful video
شكرا لك امي
Wow amazing thank you. ..❤️❤️❤️❣️❣️🔥🔥🔥🔥
@Letstute
2 жыл бұрын
You are so welcome
Very nice
Thanks so Much.. Its very useful
@Letstute
4 жыл бұрын
You are welcome
Best video
Is there a way to cure this permanently or make it back to normal
@Harish-ch6qi
3 жыл бұрын
Anitha Ganesh Yes!There are several ways to solve this permanently like LASIK,Smile,Fukala surgery,intraocular lens implantation.......but every thing needs some prerequisites which ur doctor can access
Thanks madam for your clear presentation,, however it would be better when you had explained what causes the lens to be short or long
So nyc
Amazing explanation
@Letstute
3 жыл бұрын
Thank you for your comment. Keep watching keep learning
I really like your channel 👍
@Letstute
4 жыл бұрын
Thank You, for liking our video
Hi, at 1.25 you have written that if the object is far, the ciliary muscles stretch so it causes the thinning of the lens and hence the focal length should increase but you have written the focal length decreases. Same applies when the object is near, the ciliary muscles compress which causes the lens to bulge on one side and hence the focal length decreases. Pls let me know if I am wrong. Otherwise the video is great 😊👍🏻
@xsnox7
2 жыл бұрын
1:25
Very very thanks
I like your channel ❤️
THANKS 😊
WOW IT IS SUPER I SUB AND LIKE
@farhanhyur6528
3 жыл бұрын
THX
Thanks a lot for knowledge
@Letstute
2 жыл бұрын
Thanks for liking
Thank you soo much
@Letstute
2 жыл бұрын
You're welcome! :)
Thank you so much sir plz make more video sirrrrrr
@jahirhusain7529
4 жыл бұрын
Bhagyashree Bhagu Hello everyone நான் ஒரு education youtube channel ஆரம்பித்துள்ளேன். உங்களுக்கு பிடித்திருந்தால் subscribe செய்யவும்😊
Strange style your mam I am immensely satisfy your lecture
Thanks 😊 for the help know I know 😊😘👍
@Letstute
3 жыл бұрын
Most welcome 😊
Mam I have one doubt before retina is there means ,it is myopia or hypermetrophia
Thanku mam❤❤
1:15 I think when the cillary muscles stretch then the focal length will increase
Thanks ❤️
@Letstute
2 жыл бұрын
You're welcome 😊
Please make video on refraction of light for 10th class
@ALPHA_FF_999
3 жыл бұрын
Thnks
mam very nice explanatin
@Letstute
3 жыл бұрын
Thank you for your comment. Keep watching keep learning
Please video me mention karo ki konsa class ka chapter chal raha hai
Myopia is a normal we can recover it ?? Answer me
Mam please explain about focal length and focal point plz mam
CAC Triphala churna is a classical herbal churna prepared from three herbs Amla (Emblica officinalis), Baheda (Terminalia bellirica), Harad (Terminalia chebula). These ingredients show antioxidant, anti-inflammatory, immuno-modulator properties. The use of this churna gives effective results in all signs & symptoms related to myopia patients.
@Letstute
2 жыл бұрын
😊
there is a major mistake in this video please correct it before the students get confused.when muscles are relaxed lens becoms thinner and thus focal lens decreases(in video u have told it increases)
Ok
How are they suffering it's a super power
Why myopia is under corrected and hypermetropia is full corrected
Madam can u explain presbyopia
@Letstute
2 жыл бұрын
noted
Tho
This proves eyesight can be fixed naturally, how come birds dont lose their eyesight, wild animals are seeing great, so the human eye is the only eye on the planet that needs glasses to see good?? we do not use our eyes like wild animals, man they are really focusing all day to hunt and survival, we read books then smart phone it up and wonder why we cant see in the distance LOL Hyperopia guy doesnt read enough and when looking distance, hyperopia guy is not really focusing on shit, just casual vision. Myopia guy loves gaming and smart phone alot and reading. Make sense??
@Letstute
2 жыл бұрын
😊
سعودي ؟
Wrong concept
@Letstute
2 жыл бұрын
😊