Neurology - Cranial Nerves I and II
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An acquaintance of mine has this condition, very sad. It is not a joke for those afflicted.
RememberApostrophes 8 months ago
1:26 "I AM MELTING YOUR BRAIN!!!"
Also that black guy has lovely eyes.
terrorlord15 10 months ago
@gdprosper are u JD from scrubs?
terrorlord15 10 months ago
crossing over occurs at the optic chiasm. depends where you sever it. PRoximal to the optic chiasm (towards the occipital cortex), the defect would defect would depend if you sever it at optic tract or at the geniculate nucleus. Various color charts on net demonstrate these defects
benshehzad 2 years ago
for the acomodation reflex and pupilary reflex are responsable CN-III-IV-VI, which are responsable for motor reflexes.
CN-II is a sensorial nerve
margavasile 3 years ago
Yeah I too think he should have tested for the red and accomodation relex for CN2... but other than that excellent set of series!
sotonhousing 3 years ago
Im nto sure i understand completely. Say if someone cut the nerve at the back of the right eye on the optic nerve. Would this effect the opposite eye (left eye) vision field or no? due to the tract cross over.. or have they yet not crossed over?
daisyngary 3 years ago
i´m afraid hungyrybear is right, if CNII is damaged pupilary reflex is gonna be negative and the opposite (the pupilary reflex in the other eye) too. If the CNIII is damaged and the CNII is undamaged the opposite reflex will be positive. It´s amazing how can you get to diagnosis without using just images or lab.
111503 3 years ago
this is amazing!
paulmargaret 4 years ago
it´s for CNIII. CNII is exclusively vision as you know.
Kuboaaa 4 years ago 2