Systemic eye disease Flashcards
position of the eye in CN III palsy
down and out
inferolateral
cause of CN III palsy
microvascular tumour aneurism MS congenital
function of superior oblique
intorsion
depression in adduction
weak abduction
clinical features of CN IV palsy
head tilt to opp side palsy
features of torsion and depressed chin - esp bilaterally
cause of CN IV palsy
blunt head trauma if bilateral
congenital
microvascular
tunour
clinical features of CN VI palsy
eye cannot abduct and may turn in tue to unopposed medial rectus
cause of CN VI palsy
tumour microvascular raised ICP congenital papilloedema
patient has a down and out painful eye with pupil involvement, what do you need to do
urgent head CT and angio for suspected aneurism
what is internuclear ophthalmoplegia
medial longitudinal fasciculus susceptible to vascular/MS damage and can lead to patient moving eye but the other cant do it at the same time
damage to optic nerve has features of?
visual loss or perfect 50% loss
cause of optic nerve compression or damage
ischaemic optic neuropathy
optic neuritis
meningioma, glioma, haemangioma
cause of optic neuritis and how may it appear
MS
pain behind one eye, esp movement
colour desaturation, scotoma
progressive unilateral vision loss
how may optic neuritis appear on fundoscopy
pale optic disk
recovery from optic neuritis
weeks to months
may have issues years after
features of optic chiasm defects and cause
bitemporal hemianopia
pituitary tumour
meningioma
craniopharyngioma
