CRVO - FA

You should look at the Normal Fluorescein Angiogram photo first for comparison. This photo shows that circulation to the retina is severely impaired. No capillary detail is seen. The cause is a clot lodged in the central retinal vein which drains all of the retinal blood back toward the heart. When blood flow to the retina is impaired this severely, the central retinal vein occlusion is termed ischemic, and there is a high probability that abnormal blood vessels will begin to grow on the iris and block the passage of fluid out of the eye, leading to a dangerous form of glaucoma.