vision loss and blindness Flashcards
1
Q
symptoms of CRAO
A
sudden vision loss
painless
2
Q
signs of CRAO
A
RAPD
pale oedematous retina, thread-like retinal arteries
3
Q
causes of CRAO
A
- carotid artery disease
- emnoli from the heart
- giant cell arteritis
4
Q
two variants of retinal artery occlusion
A
- branch retinal artery occlusion
- amaurosis fugax
5
Q
symptoms of amaurosis fugax
A
- transient painless vision loss
- like a curtain coming down
- lasts about 5 mins with full recovery
6
Q
what should you do when someone has amaurosis fugax
A
refer to stroke clinic
7
Q
what is central retinal vein occlusion associated with
A
- endothelial damage
- abnormal blood flow
- hypercoaguable state
8
Q
signs of central retinal vein occlusion
A
- retinal haemorrhages
- dilated tortuous vein
- disc swelling and macular swelling
9
Q
what causes wet ARMD
A
new blood vessels grow under retina
-leakage causes build up of fluid/blood and eventually scarring
10
Q
is dry ARMD sudden or gradual vision loss
A
gradual
11
Q
what is drusen
A
build up of waste products below RPE
12
Q
is there treatment for dry ARMD
A
no
