Central retinal vein occlusion with iris neovascularisation (Q103368)

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 the formation of functional microvascular networks with red blood cell perfusion of the iris. Neovascularization differs from angiogenesis in that angiogenesis is mainly characterised by the protrusion and outgrowth of capillary buds and sprouts from pre-existing blood vessels.