Diabetic retinopathy is one of the complications of diabetes. Diabetic retinopathy is very dangerous and is the main cause of blindness in diabetic patients. Therefore, it is important to pay attention to the prevention of diabetic retinopathy, so what are the dangers of diabetic retinopathy? And how to treat it? Clinical experience proves that the hazards of diabetic retinopathy mainly include: 1, the fundamental prevention and treatment of diabetic retinopathy is early, comprehensive and effective control of blood sugar, blood pressure and blood lipids, diabetic retinopathy is one of the microvascular complications caused by diabetes; diabetic retinopathy is the scourge that leads to vision loss or blindness in patients. 2, poor sugar control, accompanied by increased blood lipids, will accelerate the development of diabetic retinopathy; poor blood sugar control and increased blood pressure will accelerate the occurrence of diabetic macular degeneration; the most common complications of diabetic eye disease are diabetic retinopathy and diabetic cataract. 3, the most common eye symptoms of diabetic retinopathy are blurred vision, vision loss, diplopia, eye swelling and headache; diabetic patients with fluctuating blurred vision should have their blood sugar tested in time to prevent hyperglycemia; early diabetic patients should have their eyes examined at least once a year; quitting smoking and alcohol is one of the effective measures to prevent and treat diabetic eye disease. How to treat diabetic retinopathy? Conservative treatment is based on drugs, Chinese medicine has certain advantages in the treatment of DR. According to Chinese medicine, this disease can be divided into: Yin deficiency and dry heat type, blood stasis and blood blockage type, and kidney yin deficiency type. Treatments based on the patient’s general and ocular conditions can play a role in actively controlling early lesions, promoting the absorption of hemorrhage and exudation, and improving retinal function. When serious lesions such as large hemorrhage and exudation occur, surgical treatment such as fundus retinal laser photocoagulation, vitreous cavity drug injection and vitrectomy can be considered as appropriate. The aim is to remove the blood accumulation in the eye and repair the retina. How to prevent diabetic retinopathy? Every time we see many advanced patients who end up blind because they are not detected and treated early, we doctors feel sorry from the bottom of our hearts. In fact, DR can be prevented, mainly should do the following: 1, strict control of blood sugar, blood pressure; 2, adhere to regular outpatient examination of the fundus: once found diabetes, should immediately check the fundus; no fundus lesions: at least once a year for fundus examination; every 6 months to check the fundus, and do fundus photography and FFA (retinal angiography) examination, if necessary, further OCT examination (which is very important for timely detection of neovascularization is very important); emergence of neovascularization: fundus examination + FFA + OCT every 3-6 months or follow medical advice to actively carry out laser treatment. 3. If there is a problem with the fundus, actively cooperate with the doctor and have retinal laser treatment. Laser treatment can reduce the risk of sudden blindness.