1. What is diabetic retinopathy? Simply put, it is an abnormality of diabetes manifested in the fundus of the eye, which is one of the serious complications of diabetes in the eye. The longer you have diabetes, the worse the blood sugar control, the greater the possibility of retinopathy in diabetic patients. 2.Is there any good prevention method? Diabetic patients with normal and stable blood sugar control can greatly reduce the chances of developing diabetic retinopathy. In addition, it is also important to review the fundus regularly for early detection and early treatment. 3.What will be the performance after the onset of the disease? In the early stage, there may not be any symptoms, but when the disease worsens, abnormalities such as dark shadows in front of the eyes and sudden vision loss may appear. When checking the fundus of the eye, microangiomas, bleeding or exudation in the fundus of the eye may be found. 4.How to treat the best effect? First, you should treat diabetes and control blood sugar; then use different treatments, such as medication, laser or even surgery, according to the different stages of retinopathy.