Blockage of the main artery in the retina. the typical presentation is one of profound monocular visual loss. [pmid:23470793]

Central retinal artery occlusion (CRAO) is a disease of the eye where the flow of blood through the central retinal artery is blocked (occluded). There are several different causes of this occlusion; the most common is carotid artery atherosclerosis. .