Central retinal vein occlusion
is treated only if there are other eye complications such as macular edema
or new vessels. Injection Avastin is tried intra-vitreally ( inside the eye, 3-6 injections 4 weeks apart). There is no definite cause for it but is more common in those with hypertension/hypercholestrolemia/diabetes
. It has two types-the ischemic type and the non-ischemic type . The the first type has more vision deterioration than the second type. Your ophthalmologist would be able to help you to know which type of CRVO you have had.