Visual Field Defects and Optic Nerve Pathway | Homonymous Hemianopia Bitemporal Hemianopia NEW 2020
Learn the Optic Nerve Pathway and the Visual Field Defects that occur due to lesions in different parts of the Optic Nerve Pathway, including Homonymous Hemianopia, Bitemporal Hemianopia, Quadrantanopia, Macular Sparing and Macular Degeneration. What is the difference between the Temporal vs Nasal Retina? What defects are there in the visual fields if we have: optic nerve lesions, optic chiasm lesions, optic tract lesions or optic radiation lesions? What is macular sparing? What happens in the lateral geniculate nucleus? What is anopia?
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Video Timestamps:
0:00 Introduction
0:24 Optic Nerve Pathway Anatomy / Optic Chiasm / Optic Tract / Lateral Geniculate Nucleus / Optic Radiation
1:33 Temporal vs Nasal Retina
3:10 Optic Nerve Lesions - Anopia
3:32 Optic Chiasm Lesions - Bitemporal Hemianopia
3:56 Optic Tract Lesions - Homonymous Hemianopia
4:30 Optic Radiation Lesions - Quadrantanopia
5:04 What is the Macula?
5:32 Visual Cortex Lesions - Macular Sparing
6:23 Macular Degeneration
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Other Questions answered and video tags:
Quadrantanopia
Hemianopia
Visual Field Defects
Optic Nerve Lesions
Causes of Homonymous Hemianopia
Causes of Bitemporal Hemianopia
Lesions in visual pathway
Disclaimer: Please remember this video and all content from Rhesus Medicine is for educational and entertainment purposes only and is not a guide to diagnose or to treat any form of condition. The content is not to be used to guide clinical practice and is not medical advice. Please consult a healthcare professional for medical advice.
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Пікірлер: 94
In seven minutes you made it as clear as day! I've never understood this throughout my neurology attachment in medical school nor in my Uworld explanations. Thank you, than you thank you!!!🤗
@RhesusMedicine
4 ай бұрын
You're welcome, happy it helped!
The best video I have ever seen about hemianopia and optic lesion❤️
I watched 3,4 vedios earlier to it, but this vedio cleared my whole concept about optic lesion !! Best vedio ever !
Best video I've seen so far on this subject. Thank you!
Clear and easily explained, it took me only 5 mints to understand , Thank you !
Seven minutes that worth it. So good.
@RhesusMedicine
3 жыл бұрын
Thank you! Means a lot hearing people enjoyed the videos 😀
Thank you so much.searched so many vedios ,finally I understood by ur vedio😁😁
Awesome explanation in just 7 minutes Tqsm🤩🤩
My concepts are cleared for life, so nicely explained, thank you
Helped me clarify the difference between the retinal side and the corresponding visual fields, when it comes to lesion of the optic tract. Thank you!
Great Video! I like that you use different colors for illustrations instead of white and black in most pictures for visual field defects! totally subbing to your channel! :)
@RhesusMedicine
4 жыл бұрын
Really glad it helps! Thanks!
This video cleared all confusion 👏👏👏
Thank you so much! This is extremely helpful!!!
This was super helpful. Thank you. One question I have, for the macular sparing lesion labeled number 5, since it looks to be on the right occipital lobe, would the right temporal visual field and the left nasal visual field be spared along with the macula? Thanks again
This what we call Art !!! Thank you sooo much 😍❤️🔥✨️✨️✨️✨️
Awesome illustration Thanks 💖💖
Omg my friend In 7 minutes u cleared all the points about it Thank you ❤️❤️❤️❤️❤️😂
@RhesusMedicine
3 жыл бұрын
You're very welcome! I'm very happy the video helped you 😁
Appreciation from Pakistan. Really really helpful video💜
Cleared all my points. Very well explained!
@RhesusMedicine
3 жыл бұрын
Thank you so much for your feedback! Best of luck with all your exams 💪😁
Phenomenal explanation!
Love from Bangladesh. This is truely an amazing video.
@RhesusMedicine
3 жыл бұрын
Thank you!! Really appreciate the feedback 😎
Buy Us A Coffee!: www.buymeacoffee.com/rhesusmedicine For more medicine videos consider subscribing (if you found any of the info useful!): kzread.info/dron/Rks8wB6vgz0E7buP0L_5RQ.html Video Timestamps: 0:00 Introduction 0:24 Optic Nerve Pathway Anatomy / Optic Chiasm / Optic Tract / Lateral Geniculate Nucleus / Optic Radiation 1:33 Temporal vs Nasal Retina 3:10 Optic Nerve Lesions - Anopia 3:32 Optic Chiasm Lesions - Bitemporal Hemianopia 3:56 Optic Tract Lesions - Homonymous Hemianopia 4:30 Optic Radiation Lesions - Quadrantanopia 5:04 What is the Macula? 5:32 Visual Cortex Lesions - Macular Sparing 6:23 Macular Degeneration USEFUL STUFF FOR MEDICAL STUDENTS: FREE Amazon Prime 6 Months for Students (Including unlimited 2-day shipping on orders of any value) US: amzn.to/3gMqh0p UK: www.amazon.co.uk/gp/student/signup/info?tag=rhesusmedicin-21 Venepuncture Kit: UK: amzn.to/3r7txrW Pocket Cards: Lab Values / References / ECG / History Taking (Cheatsheets for rotations!) US: amzn.to/3c3UybK UK: amzn.to/3rd37W8 Suture Practice Kit (Complete kit with pad) US: amzn.to/3c5ZJrN UK: amzn.to/3vO76fh Fingertip Pulse Oximeter US: amzn.to/3tFDT43 UK: amzn.to/3eZYoo5 (Affiliate links - We get a small percentage of sales, so if you buy anything, thank you!)
@darrenaydin2118
2 жыл бұрын
I dont mean to be so off topic but does any of you know of a method to get back into an Instagram account? I was stupid forgot my login password. I would appreciate any tricks you can offer me.
@marshallanson1478
2 жыл бұрын
@Darren Aydin instablaster =)
@darrenaydin2118
2 жыл бұрын
@Marshall Anson Thanks so much for your reply. I got to the site through google and I'm in the hacking process atm. I see it takes a while so I will get back to you later with my results.
@darrenaydin2118
2 жыл бұрын
@Marshall Anson It did the trick and I finally got access to my account again. I'm so happy! Thanks so much, you saved my account!
@marshallanson1478
2 жыл бұрын
@Darren Aydin you are welcome xD
You saved my life ❤❤❤❤❤ thank you
Easily understood, thanks
Thankyou so much ..u described everything
1 wk pehle our physio exam was there but I did the lesion wrong and wrote what so ever wrong concept I have grabed before this .... thankyou sir for such great explanation now I have understood properly
Where have you been??..So helpful! 😊
This video absolutely helped me out !!! Thanks a lot :) 😊
@RhesusMedicine
4 ай бұрын
You're welcome!
best video on this topic
Is it needed a resonance to know where the issue is on the optic nerve?
Thank you so much!
You saved my time, many thanks
@RhesusMedicine
4 ай бұрын
Glad it helped!
Appreciation from Mongolia. what a great video, i spent a lot time to understand some of these. as a foreign person, i would like to catch all these words one by one. is there any chance to find a text, to make sure only. i want to double check. since there is no subtitle.
Great Video
Thanks a lot 💞
Really an awesome video😍😍😍 Thank you so much
@RhesusMedicine
2 жыл бұрын
You're welcome!
Thank you ❤
thank you sir.
Thanx a lot 👏🏻
Great explanation !
@RhesusMedicine
8 ай бұрын
Glad it helped!
Nice video.short and sweet🎉
@RhesusMedicine
4 ай бұрын
Thanks!
Excellent video
@RhesusMedicine
2 жыл бұрын
Thank you 😊
Awesome explanation
@RhesusMedicine
Жыл бұрын
Glad it helped!
You explained it so well😭🫀
@RhesusMedicine
Жыл бұрын
I'm happy it was helpful 🙂
no sooner u r going to be a big channel🙂
thank you!
@RhesusMedicine
2 жыл бұрын
You're welcome!
Thank you
@RhesusMedicine
8 ай бұрын
You're welcome 😊
Really appreciated
@RhesusMedicine
8 ай бұрын
Thanks 🙂
Thank you sir..
@RhesusMedicine
2 жыл бұрын
You're very welcome!
Is there specific cure for quadrantanopia
thank you so much
@RhesusMedicine
Жыл бұрын
You're welcome John 👍
Very well explained. I always find it difficult to get my head around the visual pathways, but if you draw it out like the above, you can work it out fairly easily. If a patient has bitemporal hemianopia, I would investigate with a serum prolactin (which may be raised in pituitary adenomas), skull film and formal visual field testing to try and elicit exactly where their field defect is.
@RhesusMedicine
Жыл бұрын
Thanks - I agree that drawing them out helps tremendously
THANK U SOOOO MUCH
@RhesusMedicine
3 жыл бұрын
YOU'RE WELCOME 👌😄
I never got dis ryt untill today
Perfect
@RhesusMedicine
3 жыл бұрын
Thank you! 👍👌
Tyty :)
@RhesusMedicine
11 ай бұрын
😊 You're welcome
Why there is a homonymous hemianopia if only the red one is affected why both eyes are affected
👍🏼
You made a mistake. It’s not the photoreceptor axons that form the optic nerve, it’s the ganglionic cell axons. Good video regardless.
i wonder how you managed to explain it in 7 minutes😂😂😂😂my lecturere took 2hours explaining same things
Lateral geniculate is for auditory
@jurepreloznik8234
7 ай бұрын
medial is for auditory
Thank you!