The stages of hypertensive ophthalmopathy are: 1, grade I, retinal artery thinning and reflection enhancement; 2, grade II, retinal artery narrowing arterial and venous cross compression; 3, grade III, on the basis of the above lesions there is fundus hemorrhage and cotton wool exudation; 4, grade IV, on the basis of the above and the appearance of optic disc edema, retinal small arteries early spasm, with the progress of the disease appears sclerosis, rapid increase in blood pressure, can cause exudation and hemorrhage in the retina. In patients with peripheral retinal vein occlusion who have already lost 20/40 of their visual acuity, in addition to continued pressure lowering, local laser treatment may be effective in preventing vision loss in patients with combined macular edema.