As people’s standard of living continues to improve, diabetes is increasingly becoming a killer that affects people’s quality of life. Diabetes affects the vascular system throughout the body, including the cardiovascular, cerebrovascular and renal vessels, and the eye vessels also bear the brunt of the impact. The eyes are the windows to the soul, and even more so, the windows to the microvasculature. Diabetes is the root of diabetic eye disease, ophthalmic treatment is the treatment of the surface, diabetes treatment is the root, therefore, in the treatment of diabetic fundopathy at the same time should first actively control blood sugar, blood pressure and blood lipids. High blood glucose, high blood pressure and high blood lipid are like three mountains pressing on the blood vessels, making them narrow and blocked, leading to ischemia and hypoxia in their supply areas and producing a series of pathologies. Only by pushing down the three mountains and freeing the blood vessels can we fundamentally improve the local blood supply and provide sufficient nutrition to the tissue cells for their healthy growth. This is manifested in the eyes, i.e., maintaining good vision. When should I visit an ophthalmologist? When diabetes is diagnosed, it is time to visit an ophthalmologist. There are six stages of diabetic fundus lesions. When early lesions occur, people can be asymptomatic, and even when the fundus lesions have reached stage 3-4, there is always the possibility of a hemorrhage in the fundus that could lead to loss of vision, people can still have no eye discomfort until the hemorrhage occurs. If the patient does not go to the ophthalmology department in time to check the fundus in detail, then the best time for early detection and treatment may be lost, and when the patient finds that there are black objects in front of the eyes and then goes to the ophthalmology department, the condition is often very serious and it is very difficult to recover the vision. Therefore, early consultation with the ophthalmology department and regular dilated eye examinations are important ways to avoid vision loss. How many years ago, the only way to get diabetes was to go blind. As medical technology continues to advance, it provides increasingly sophisticated treatment for diabetic patients. Today when fundus lesions reach a certain level of severity, such as stage 3 fundus lesions, fundus laser treatment can be used to stop further deterioration of the lesions. If the fundus hemorrhage is not absorbed and even retinal detachment occurs, patients should receive vitreoretinal surgery as early as possible to completely remove the bleeding in front of the retina and timely retinal photocoagulation in sufficient amount to save their vision. “Three controls and one early stage” and “keep your mouth shut and move your legs” are the two major assets to prevent blindness.