Cranial Nerve 4 Palsy

This excerpt comes from a neuro-ophthalmology lecture from Ophthobook.com. Fourth nerve palsies effect the superior oblique muscle (trochlea).

Category:

Education

Tags:

• ophthalmology
• eye
• optometry
• cranial nerve
• palsy
• neurology
• neuroophthalmology
• CN4
• fourth

[rmcdaniel423]

No need to apologize for "beating this to death". That's exactly what your viewing audience here was hoping for. Thanks!!

[digitaltrix]

You Sir, are Awesome, keep up the Great Work, many thanks from the medical community worldwide!

[catnjoey22]

My daughter suffered from a mandibular fracture and head trauma and now she has six nerve palsy I've noticed she has difficulty reading, walking straight,on the stairs too. She's never ever had any eye problems. Shes been seen by seven doctors And an opthomoligist she's never seen before just diagnosed her with Duane's 3 can Duane's be caused by head trauma????

[raghunice]

Thank u very much. God bless u

[D4vy87]

Great aide memoire for isolation testing of SO and CNIV nerve palsies, many thanks!

[MsShrutiS]

Your video are fantastic for understanding this orbital anatomy. Many many thanks!

[habibanazeera]

thanks

[starryskies88]

i have never understood the pulley thing until now! Thanks so so much!

[richiupliftmofo]

@yazmannn aahhhhhhhhhhh ok! I've got it! thank u very much. I understand why is so difficult to diagnose! ;)

[yazmannn]

@richiupliftmofo So using the analogy of the elbow and arm pulling at 2:15, he explains why the same muscle (the superior oblique) can move the eye in two different ways depending on where the eye is looking. If the eye is looking towards the nose the elbow pulling pulls it down. If the eye is looking out, then the same elbow movement turns the eye. So you ask the patient to look down and in, because thats when the SO muscle pulls the eye down. Hope that made sense.

[richiupliftmofo]

@yazmannn instead....I didn't undertand! why u test down and in?