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Iris and angle neovascularization, Rubeosis

Iris and angle neovascularization (Rubeosis) is a term that describes abnormal blood vessel growth on the iris or cornea, or anterior chamber angle. Normally there are no visible blood vessels in these areas. When the retina has been deprived of oxygen, or ischemic, as with diabetic retinopathy or vein occlusion, abnormal vessels form to supply oxygen to the eye. Unfortunately, the formation of these vessels obstructs the drainage of aqueous fluid from the front of the eye, causing the eye pressure to become elevated. This usually leads to neovascular glaucoma.