Show pageExport to PDFBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Central Retinal Artery Occlusion (CRAO) ====== ===== Risk Factors/Causes ===== * Atherosclerosis * Emboli * Cardiac sources:valves or myxoma * Coagulopathies * Sickle cell * Oral contraceptives * pregnancy * homocystinuria * platelet abnormalities * clotting factor abnormalities * Collagen vascular diseases * Ocular abnormalities * Arterial loops * optic disc drusen * Migraine * Hypotension * Trauma * Age * 60 + years old * Gender * more men than women are affected. * 1-2 % are bilateral