diseases n stuff Flashcards
causes of sudden visual loss ABCD
A - ARMD
B - Bleed/Blocke vessel
C - Closed angle glaucoma
D - detached retina
in an artery occlusion is visual loss painful
no
what colour retina would be seen in artery occlusion
pale
how does temporal arteritis casue vision loss
causes ION - ischamic optic neuropathy -loss of blood to optic nerve head
what would be seen by patient in vitreous haemorrhage
floaters
sign of vitreous haemorrhage
loss of red reflex
signs of retinal detachment
painless sudden visual loss sudden onset of flashes or floaters
commonest casue of blindness in Uk
ARMD
what happens in wet ARMD
vessels grow under retina and leak causing sudden central visual loss
what type of sightedness in closed angel galucoma more liekly seen in
long sighted
causes of gradual visual loss ABCDG
A - ARMD (dry) B - blur (refractory error) C - cataract D - diabetes G - glaucoma
what is a catarcact
cloudign of lens due to changes in lens proteins
what type of lnse proteins are invloved in cataracts
crystallins
management of cataract
remove
symtoms of dry ARMD
gradual visual loss
central vision missing ‘scotoma”
signs of fundoscopy in dry ARMD
drusen - build up below RPE
atrophic patches of retina
treatment of dry ARMD
no cure -supportive
type fo refractory error (4kinds)
myopia - short hypermetropia - long astigmatism - irregular cornea curvature presbyopia loss of accomodation with age
signs on fundoscopy in open angle glaucoma
cupped disc
what is the neuroretinal rim
tissue between the edge of the disc (ganglion cells surrounding ) and the optic cup (lighter inner circle)
what is papilloedema
bilateral optic disc swelling due to raised ICP
down and out
third nerve palsy
head tilt seen
fourth nerve palsy
down and out and painful think ?
aneurysm
