retinal vein occlusion Flashcards
1
Q
occurs when
A
thrombus forms in retinal veins and blocks drainage of blood from retina
2
Q
central retinal vein
A
runs through optic nerve and is responsible for draining blood from retina
3
Q
blockage of retinal vein causes…
A
pooling of blood in retina causing leakage of fluid and blood
- macular oedema
- retinal haemorrhages
- release VEGF
4
Q
presentation
A
sudden painless loss of vision
5
Q
risk factors
A
htn high cholesterol smoking diabetes glaucoma systemic inflammatory conditions e.g. SLE
6
Q
fundoscopy findings
A
flame + blot haemorrhages
optic disc oedema
macula oedema
7
Q
Mx
A
referral
aim to treat macular oedema and prevent neovascularisation
- laser photocoagulation
- intravitreal steroids
- anti-VEGF therapy
