Great videos ! Super clear how muscles move the eyes! I wonder how our behavior affects the eye and the other way around! So much information to process! 😊
In the 'Eye Movement Exam'-section, I have noticed a visualisation fault in the animation: looking at the two eyes at 9:48, judging from the shape of the oval-shaped irises looking at the pen, they should be interchanged to be perspectively correct.
Its a great video and excellent presentation, but I want to shed light on some pointers--> 11:15 to 11:25 It says the lesion is the cranial nerve nuclei but between 11:38 to 11: 50 the animation shows clinical presentation of Distal Lesion of Abducen Nerve rather then nuclear lesion. In distal Lesion: When Locking ipsilaterally (towards side of nerve lesion) ipsilateral eye fails to aBduct but contralateral does aDuct as shown in the above video, where as in Abducen Nerve Nuclear Lesion It is not possible to look towards the side of the lesion by either eyes as there is failure of transmission of cortical signal by the ipsilateral abucens nerve nucleus (innervating lateral rectus) to the contralateral oculomotor nerve nucleus (innervating medial rectus) via medial longitudnal fasciculus. Hence both eyes don't fail to move when the patient is asked to look towards the side of the lesion. Having said that even though I agree between 11:38 to 11:50 you used the term Abducen Nerve Palsy which is used for Distal Lesion not Nuclear , the reason because you told in video earlier that we are talking about nuclear lesion may confuse the audiance. Hopefully you don't mind and that helps. I have learned alot from the content of this chanel and really appreciate the time and efforts you guys are putting into these videos
Plus the CNII nuclear or distal lesion will all cause fixed dilated pupil ipsilaterally due to parasympathetic loss (sphincter pupile failes to contract & un unopossed action of dilator pupile results in fixed blown pupil)
Great video with clear narration and animation! Helps to understand the complexity of the eye muscle actions. If I can make two comments - it will help if you mention that in primary position of eye, the axis of the obliques and the vertical recti muscles are not in line with the axis of the eye. Therefore to test these muscle action clinically, the axis of the muscles need to be in line with the axis of the eye. For example, superior oblique action is best tested when the eye is adducted. when you explain the 4th nerve palsy you say the patient is unable to depress the when it is adducted due to the fact the intact inferior rectus is unable to depress the eye. This causes confusion.
Great work but I have concerns because there was inconsistency between when the individual muscle was explained and when the eye movement exam was conducted. It is the complete opposite of what was said.
This is great ! What tools and softwares do you use to make this beautiful animations, please ? I'm really interesting by a making-of vids of Jodi Slade work ! ;) Best regards from France !
Hi! I am so glad you enjoyed the animation! I use Autodesk Maya for the animation and Pixologic Zbrush for the 3D modeling. I am beginning to learn Blender as well, which is an open source 3D modeling and animation program. All the best in your animation work! Cheers from the US
@@jodislade4014 Thank you very much for your answer ! I'll probably start with Blender. Hope I'll make animations as good as yours ! :) I'm eager to see your next videos with FSUMed Cheers.
Sup and inf oblique both arise from Annulus of Zinns and their fiber orientations are similar. Why one muscle abducts but the other adducts the eyeball? Sup oblique is an abductor and a depressor. How does it pull the eyeball down and IN?
I have a question relating to the eye movement exam, and specifically to the left to right (and vice versa) movement in the superior and inferior positions: When the eyes are allowed (without the pen) to move rapidly, but in a relaxed state, from left to right in these upper and lower positions, do they then tend to find their highest and lowest point when looking straight ahead? I have noticed, when conducting this test myself, that the eyes will follow an arched trajectory and not an imaginary straight horizontal line. Is this observation correct and is this an expected function of the eye muscles? Thank you, Leonardo
![The Trendelenberg Sign [HD]](http://i.ytimg.com/vi/DkSTr7K-eAo/mqdefault.jpg)
Fantastic video! It’s the only video explaining confusion about superior oblique muscle.
This is the best Eye Movements demonstration video that I have seen thus far. I truly enjoyed watching it.
This video = amazing physics intuitions, amazing animations !!
This is the best video on the eye muscles and nerves that I have ever seen thank you so much truly educational!
Wow wow wow ! So thanks for sharing !!!
Very helpful video! Thank you!🤓
~studying to take the test for COT
Superb animation and straight to the point presentation, please keep em coming 🙏🏽🙏🏽
I'm just dying for more content from you guys!
Great videos ! Super clear how muscles move the eyes! I wonder how our behavior affects the eye and the other way around! So much information to process! 😊
Very helpful. Thank you for this great illustration and explanation.
OMG, OMG, OMG. What a wonderful job. Thank you, sir!!!
Thank You So Much for Sharing Your Beautiful Amazing Wonderful Stunning Animation Videos On Human Anatomy 👍👍❤️❤️
excellent video and explanations. Finally, I get the oblique muscles movements. Thank you.
seriously so helpful and beautiful demonstrated .. awesome work
In the 'Eye Movement Exam'-section, I have noticed a visualisation fault in the animation: looking at the two eyes at 9:48, judging from the shape of the oval-shaped irises looking at the pen, they should be interchanged to be perspectively correct.
This video is pure gold! Thank you guys!
Amazing
SUPERB!
Great explanation and illustration. Thanks
❤️Thanks...Your Animations are Awesome..Plz make more videos on Anatomy....❤️
Great!!!!
Perfect video, is the only video that explains these things on youtube and internet in a simple way!
Thank doctor Eric for your kindness and hard work and generosity
Its a great video and excellent presentation, but I want to shed light on some pointers--> 11:15 to 11:25 It says the lesion is the cranial nerve nuclei but between 11:38 to 11: 50 the animation shows clinical presentation of Distal Lesion of Abducen Nerve rather then nuclear lesion.
In distal Lesion: When Locking ipsilaterally (towards side of nerve lesion) ipsilateral eye fails to aBduct but contralateral does aDuct as shown in the above video, where as in Abducen Nerve Nuclear Lesion It is not possible to look towards the side of the lesion by either eyes as there is failure of transmission of cortical signal by the ipsilateral abucens nerve nucleus (innervating lateral rectus) to the contralateral oculomotor nerve nucleus (innervating medial rectus) via medial longitudnal fasciculus. Hence both eyes don't fail to move when the patient is asked to look towards the side of the lesion.
Having said that even though I agree between 11:38 to 11:50 you used the term Abducen Nerve Palsy which is used for Distal Lesion not Nuclear , the reason because you told in video earlier that we are talking about nuclear lesion may confuse the audiance.
Hopefully you don't mind and that helps. I have learned alot from the content of this chanel and really appreciate the time and efforts you guys are putting into these videos
Plus the CNII nuclear or distal lesion will all cause fixed dilated pupil ipsilaterally due to parasympathetic loss (sphincter pupile failes to contract & un unopossed action of dilator pupile results in fixed blown pupil)
Great video with clear narration and animation! Helps to understand the complexity of the eye muscle actions. If I can make two comments - it will help if you mention that in primary position of eye, the axis of the obliques and the vertical recti muscles are not in line with the axis of the eye. Therefore to test these muscle action clinically, the axis of the muscles need to be in line with the axis of the eye. For example, superior oblique action is best tested when the eye is adducted. when you explain the 4th nerve palsy you say the patient is unable to depress the when it is adducted due to the fact the intact inferior rectus is unable to depress the eye. This causes confusion.
best video on eye movements that has ever existed on the internet ♥
Mind blowing work ....the total I wanted this from any youtube channel..work is done smartly and to the point
Great effort 👍👍👌
This video was so perfect. Explained beautifully with excellent animation.
Amazing... I cannot thank you enough for your videos. You are the best.
Thank you bro excellent expression 👏🏻👏🏻💪🏻💪🏻💪🏻💪🏻
What a GEM, thanks a million!
Brilliant animations!
fantastic video. very helpful. thank you
Thank you very much for the incredible information!!!
wow, excellent explanation
Going to subscribe you and hitting the bell icon.....you are amazing !
Wow that was amazing!
Just in time...thank you very much❤
Just gained a new subscriber
Perfect video and presentation! Very helpful!
Great work but I have concerns because there was inconsistency between when the individual muscle was explained and when the eye movement exam was conducted. It is the complete opposite of what was said.
💖🤗Hi, really helps me to understand why I have a double visions...
Excellent ... well done ...
Thanks for making this video. Great job in teaching us!
thank you sir
Great video!
Excellent. Once again, congratulations to the entire team.
This is great ! What tools and softwares do you use to make this beautiful animations, please ? I'm really interesting by a making-of vids of Jodi Slade work ! ;)
Best regards from France !
Hi! I am so glad you enjoyed the animation! I use Autodesk Maya for the animation and Pixologic Zbrush for the 3D modeling. I am beginning to learn Blender as well, which is an open source 3D modeling and animation program. All the best in your animation work! Cheers from the US
@@jodislade4014 Thank you very much for your answer ! I'll probably start with Blender. Hope I'll make animations as good as yours ! :)
I'm eager to see your next videos with FSUMed
Cheers.
So usefull 🌹
Thanks alot
Thank you so much❤️ it’s brilliant
BEST EXPLANATION EVER
That's amazing! Is there a way to reach out for more educational video like this?
Intorsion and extorsion best explained ❤
Muy buena clase!!!🤩🤩🤩
Extraordinary!
Sup and inf oblique both arise from Annulus of Zinns and their fiber orientations are similar. Why one muscle abducts but the other adducts the eyeball? Sup oblique is an abductor and a depressor. How does it pull the eyeball down and IN?
Underrated presentation
Thanks
Wonderful ❤❤❤
amazingggg vid!!!!!!!!!!!!!!!!!
i was searching for this for soo long 👍
How do know ,can I get muscle surgery?
What is the name of the doctor?
I have a question relating to the eye movement exam, and specifically to the left to right (and vice versa) movement in the superior and inferior positions: When the eyes are allowed (without the pen) to move rapidly, but in a relaxed state, from left to right in these upper and lower positions, do they then tend to find their highest and lowest point when looking straight ahead? I have noticed, when conducting this test myself, that the eyes will follow an arched trajectory and not an imaginary straight horizontal line. Is this observation correct and is this an expected function of the eye muscles? Thank you, Leonardo
Just awesome
Anyone knows What is the 3d software being used in this video
Thank you!!!
Great!
MashaAllah
Incredible
Nice
Please upload more of anatomy videos 🥺
very useful!
thank you
Best
More videos please
🤟
toll
bestt
Thank you!!!
Thanks