In the early stages of diabetic retinopathy, there are usually no self-conscious symptoms in the eye. With the development of the lesion, it can cause different degrees of visual impairment. If the macular area is involved, there may be dark shadows in the central visual field, loss of central vision and/or distortion of visual objects. If the small retinal blood vessels rupture and a small amount of hemorrhage enters the vitreous, patients may feel a dark shadow floating in front of their eyes. When a large amount of neovascularization bleeds into the vitreous cavity, vision can be severely lost and only light perception is present. If the retinal vessels outside the macula are occluded, or if the proliferative retinopathy leads to retinal detachment, the visual field will have a large defect in the corresponding area. Treatment of diabetic retinopathy should, in principle, frequently control high blood glucose to normal levels. If the blood sugar is controlled at normal level for a long time, it has a definite effect on relieving the retinal hypoxia and on delaying the progress of its retinopathy and reducing the disease. Its treatment can be divided into: 1, drug therapy: used for early diabetic retinopathy, it has the potential to reduce the ease of leakage of diabetic retinal capillaries, reduce the high viscosity of blood and platelet coagulation, and achieve the purpose of reducing diabetic retinopathy. 2: Photocoagulation therapy: Diabetic nonproliferative pre-treatment by laser photocoagulation can make the existing neovascularization subside and achieve the purpose of maintaining the visual function of part of the retina, especially the macula retina.3: Surgical treatment Surgical therapy is mainly used to treat the complications of proliferative retinopathy, such as blood accumulation in the vitreous caused by neovascularization, retinal vitreous proliferative strips caused by traction retinal detachment and hole-derived retinal detachment, etc. Diabetic retinopathy is a serious blindness, but it is also a preventable and treatable disease. Patients with diabetes should have regular checkups at the hospital to determine different treatment options for different fundus conditions.