Abstract
Central retinal artery occlusion (CRAO) refers to a sudden blockage of the central retinal artery. It is an ophthalmic emergency that can result in profound visual impairment. The Central retinal artery (CRA) is a branch of the ophthalmic artery which is a branch of the internal carotid artery. The CRA is the main blood supply to the inner retinal layers whereas the outer retina is supplied by the choriocapillaris of the choroid which branches off the ciliary artery. CRAO has an incidence of 1 in 100,000 people and is responsible for 1 in 10,000 outpatient ophthalmology appointments. It most commonly affects patients over the age of 60 with men affected more than women. This article will provide a brief outline on the pathophysiology, diagnosis, investigations, and management of CRAO.
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