Cranial nerve palsies Flashcards
Third nerve palsy - muscles affected
SR IR MR IO LPS Sphincter papillae
Third nerve palsy - eye position
LR still works so eye will be abducted
SO still works so eye will look down
ie: downward, outward gaze
Third nerve palsy - associated features
Ptosis - eyelid drooping
Dilated pupils
Third nerve palsy - causes
Microvascular Tumour Aneurysm MS Congenital
Third nerve palsy - pain
aneurysm
Fourth nerve palsy - muscle affected
Superior oblique
Fourth nerve palsy - what movement can eye not do
Can’t look in and down
Fourth nerve palsy - eye position
Affected eye will be slightly raised compared to the normal functioning eye
Fourth nerve palsy - associated features
Head tilt
Vertical diplopia
Fourth nerve palsy - causes
Congenital
Microvascular
Tumour
Bilateral - closed head trauma
Sixth nerve palsy - muscle affected
Lateral rectus
Sixth nerve palsy - what movement can eye not do
Abduction
Sixth nerve palsy - eye position
Medial deviation of the eye
Sixth nerve palsy - associated features
Distance double vision
Sixth nerve palsy - causes
Microvascular Raised intracranial pressure - can result in papilloedema Tumour Congenital
