Retinal Artery and Vein Occlusions: Sudden Visual Loss Flashcards
1
Q
What is the presentation of central retinal artery occlusion?
A
Causes sudden unilateral visual loss
Painless
2
Q
What is the cause of central retinal artery occlusion?
A
Due to thromboembolism (from atherosclerosis) or arteritis (temporal arteritis)
3
Q
What are the signs of central retinal artery occlusion?
A
Painless, sudden unilateral visual loss
Afferent pupillary defect
‘Cherry red’ spot on a pale retina
4
Q
What is the presentation of central retinal vein occlusion?
A
Sudden, painless reduction or loss of visual acuity, usually unilateral
5
Q
What are the risk factors for central retinal vein occlusion?
A
Increasing age
Glaucoma
Polycythaemia
6
Q
What is seen on fundoscopy in central retinal vein occlusion?
A
Severe retinal haemorrhages
