Neuro-ophthalmology Flashcards
1
Q
third nerve palsy (oculomotor)
A
down and out
often intialy fixed dilated pupil with no accomdation
ptosis
ophthalmoplegia (paralysed muscles of eye)
2
Q
Causes of third nerve palsy (oculomotor)
A
GCA
DM
Posterior communicating artery aneurysm
3
Q
foruth nerve pasly (trochlear)
A
diploplia (double vision)
downward and inward eye movement
commonest cause of vertical diploplia
patient tilts head away from lesion to compensate
neck hurts
4
Q
causes of foruth nerve pasly (trochlear)
A
rare
commonly trauma
infarction 2ndry to HTN
5
Q
sixth nerve palsy (abducent)
A
inability to look laterally
eye is deviated medially because of unopposed action of medial rectus
6
Q
causes of sixth nerve palsy (abducent)
A
MS
pontine CVA