Diabetic retinopathy is a chronic disease of the retina of the eye caused by diabetes. The occurrence of diabetic retinopathy is closely related to poor blood glucose control and combined hypertension. Active control of blood glucose and blood pressure can slow down the occurrence and development of diabetic retinopathy. For the initial appearance of mild blurred vision, vision loss must not be ignored, while adjusting the diet, control blood sugar, adhere to the treatment of the original disease, early ophthalmic intervention to prevent the further development of diabetic retinopathy. Diabetic precautions: 1, control the diet: the key to diabetes control is diet, the dietary requirements of different types of patients vary, such as obese people to reduce calorie intake, reduce body weight, increase the body’s sensitivity to insulin, so that blood glucose drops; lean people and children, the appropriate increase in calorie intake. The total number of daily meals and the distribution of three meals are relatively fixed, and the diet should be low in sugar, low in fat, high in protein and high in fiber, with more coarse grains, less refined white rice, refined white flour and fruits with high sugar content, and forbidden to eat a diet rich in monosaccharides or disaccharides, such as candy, pastries, ice cream, sweet drinks, etc. 2.Self-monitoring of blood sugar; adjust the dosage of oral hypoglycemic drugs or insulin through the measurement of urine sugar before meals. Follow the doctor’s instructions, not self-medication. 3, combined with hypertension actively lower blood pressure, blood pressure is generally controlled at 140/ 90mmHg or less. 4, diabetic patients, more than half of the disease duration of more than 10 to 15 years can appear retinopathy, so regular eye examinations should be done in order to early detection of lesions, early intervention, to avoid deterioration of the disease. Diabetic patients must see an ophthalmologist within five years of the onset of the disease or when they have any symptoms in their eyes, and then once a year for follow-up; those with small blebs or severe lesions should see a doctor once every three to six months, and pregnant patients must see an ophthalmologist before they are ready to conceive, every three months after pregnancy and three to six months after delivery. 6. In addition to visual acuity and intraocular pressure measurement, ophthalmologic examination should include fundus examination after pupil dilatation and fundus fluorescence imaging if necessary. 7. Pay attention to eye hygiene, avoid staying up late and using eyes at close range for a long time. 8, actively quit smoking. Smoking will lead to increased CO in the body, causing relative hypoxia and platelet agglutination, which will accelerate the occurrence of diabetic retinopathy. 9, once the patient has retinal hemorrhage, forbid intense exercise, reduce head activities, appropriate bed rest. 10.Laser coagulation is very effective in the early treatment of severe preproliferative and proliferative retinopathy or macular edema, so don’t be discouraged to suffer from diabetic retinopathy, you should keep a good attitude and actively cooperate with the doctor for treatment. Before laser photocoagulation, explain to the patient that whole retinal laser photocoagulation treatment can reduce retinal edema and vitreous hemorrhage, maintain central vision, and is a way to reduce blindness. Rest 1 to 2 days after surgery and do less downward head movement. 11. Vitrectomy is effective for vitreous hemorrhage and proliferative retinitis.