Central retinal vein occlusion with macular oedema (Q103371)

The central retinal vein is the venous equivalent of the central retinal artery and, like that blood vessel, it can suffer from occlusion, similar to that seen in ocular ischemic syndrome. This diagnosis is with fluid and protein deposits collect on or under the macula of the eye (a yellow central area of the retina) and causes it to thicken and swell (oedema). The swelling may distort a person's central vision, as the macula is near the centre of the retina at the back of the eyeball.