what is the incidence of bilateral central retinal vein occlusion?
Most cases of BRVO are due to idiopathic factors. Usually, patients have an anatomic predisposing factor, such as an arteriovenous crossing where the artery compresses the vein. This compression leads to clot formation and subsequent BRVO. Inflammatory conditions that affect the retinal veins may cause local damage that predisposes the individual to intravascular clot formation with subsequent BRVO.
