Central retinal vein occlusion
Medical condition / From Wikipedia, the free encyclopedia
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Central retinal vein occlusion, also CRVO, is when the central retinal vein becomes occluded, usually through thrombosis. The central retinal vein is the venous equivalent of the central retinal artery and both may become occluded.[1] Since the central retinal artery and vein are the sole source of blood supply and drainage for the retina, such occlusion can lead to severe damage to the retina and blindness, due to ischemia (restriction in blood supply) and edema (swelling).[2]
Central retinal vein occlusion | |
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Diagram of the eye; retinal vein is number 21. | |
Specialty | Ophthalmology |
CRVO can cause ocular ischemic syndrome. Nonischemic CRVO is the milder form of the disease. It may progress to the more severe ischemic type.[3] CRVO can also cause glaucoma.