Central Retinal Artery Occlusion

An 82 year-old man with a history of dyslipidemia, hypertension, and CAD s/p stenting was driving home from the grocery store when he experienced sudden vision loss in his right eye around 2:30 pm. He has no previous history of vision problems and is puzzled but eventually concerned. By the time he presents to the ED he has light perception only in his right eye. He cannot not recognize motion. Central retinal artery occlusion (CRAO) is first in the differential.