central retinal artery occlusion Flashcards
1
Q
what is the central retinal artery a branch of?
A
-the ophthalmic artery which is a branch of the internal carotid artery
2
Q
what does the central retinal artery supply?
A
the retina
3
Q
what is the most common cause of central retinal artery occlusion?
A
atherosclerosis
4
Q
what are causes of central retinal occlusion?
A
- atherosclerosis
- giant cell arteritis
5
Q
what are risk factors for developing a central retinal artery occlusion?
A
- giant cell arteritis
- diabetes
- increase in age
- FH
- hypertension
- obesity
- poor diet
- inactivity
- alcohol/ smoking
6
Q
how does central retinal artery occlusion present?
A
- sudden painless loss of vision
- RAPD
Fundoscopy:
- pale retina with a cherry red spot
- thread like retinal vessels
7
Q
how does RAPD present?
A
-when light is shone in unaffected eye the affected eye will constrict more than when light is shone in the affected eye
