eye disorders
Central Retinal Vein Occlusion and Branch Retinal Vein Occlusion
Etiology
Major risk factorsinclude Hypertension None Age Other risk factors include Overview of Glaucoma None Diabetes Mellitus (DM) None Increased blood viscosity Occlusion may also be idiopathic. The condition is uncommon among young people. Occlusion may affect a branch of the retinal vein or the central retinal vein. Neovascularization (abnormal new vessel formation) of the retina or iris (rubeosis iridis) occurs in about 16% of patients with central retinal vein occlusion and can result in secondary (neovascular) glaucoma, which can occur weeks to months after occlusion. Vitreous hemorrhage may result from retinal neovascularization. 