Central Retinal Vein Occlusion Flashcards
1
Q
What is central retinal vein occlusion?
A
A blockage of blood flow in the central retinal vein causing pooling of blood in the retina
2
Q
What are risk factors for CRVO?
A
- Increasing age
- HTN
- CV disease
- Glaucoma
- Polycythaemia
- Diabetes
3
Q
How does CRVO present?
A
- Sudden, painless reduction or loss of visual acuity
4
Q
How is CRVO investigated?
A
Fundoscopy which shows widespread hyperaemia (lots of blood in the vessls) and ‘stormy sunset’ retinal haemorrhages
Macular oedema and neovascularisation may also be present
5
Q
How is CRVO managed?
A
- Conservatively with management of risk factors
- If macular oedema present alongside, intravitreal injections can be used
- If neovascularisation taken place, laser photocoagulation can be used
6
Q
What is the key differential for CRVO?
A
Branch Retinal Vein Occlusion - where one of the vein in the distal retinal system is occlused
7
Q
How to differentiate between CRVO and BRVO?
A
BRVO will have less vision being affected
