Central retinal artery occlusion; Branch retinal artery occlusion; CRAO; BRAO
Retinal artery occlusion is a blockage in one of the small arteries that carry blood to the retina. The retina is a layer of tissue in the back of the eye that is able to sense light.
Clots may travel from other parts of the body and block an artery in the retina. The most common sources of clots are the carotid artery in the neck and the heart.
Most clots occur in people with conditions such as:
If a branch of the retinal artery is blocked, part of the retina will not receive enough blood and oxygen. If this happens, you may lose part of your vision.
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