Strict glycemic control is a fundamental measure to prevent and treat diabetic eye disease. Patients should be educated to understand that ocular complications are common in diabetic patients, that they can seriously affect vision, and that complications may have already occurred when vision is normal. Early detection and proper treatment of ocular complications can greatly reduce blindness due to diabetic ocular complications. Diabetic patients aged between 10 and 30 years old should go to the hospital ophthalmology department for a comprehensive examination in the fifth year after the diagnosis of diabetes; if they are older than 30 years old, they should start to go to the hospital ophthalmology department for a comprehensive examination at the time of diagnosis. The examination should be repeated once a year thereafter, but for those with retinopathy, it should be repeated several times a year; for those without retinopathy, it can be repeated at slightly more intervals. Women with diabetes should have their fundus checked at the hospital within 12 months before they plan to become pregnant. After pregnancy, fundus examination should be performed again during the first trimester, and then reviewed regularly. An ophthalmologist should be consulted immediately if there are Unexplained ocular symptoms, loss of vision with glasses, increased intraocular pressure, retinopathy, especially proliferative retinopathy, other ocular pathologies when vision can be compromised, macular edema.