Diabetes mellitus is a systemic, metabolic disease caused by insulin insufficiency or dysregulation of insulin action. As a metabolic disorder, diabetes mellitus has become a disabling disease with a high prevalence in middle-aged and elderly people. We all know that diabetes can lead to stroke, heart disease, and kidney failure, but in fact, the top complication of diabetes is diabetic retinopathy (glucose retinal disease), and their relationship is like relatives, always like a shadow? The retina is like the film of a camera, which plays an important role for us to see a complete and clear image. Vascular disease includes swelling of retinal blood vessels, leakage, or even abnormal blood vessels growing on the surface of the retina. In the early stages of glucose retinal disease, changes in vision may not be noticed and do not cause intense discomfort in those with the disease, which slowly erodes the patient’s vision. However, as the disease progresses, vision will be greatly affected. “The irreversible nature of the damage caused by the lesions in glycoretinopathy makes it difficult to recover once there is a significant loss of vision, and makes treatment more difficult. Patients who have glycoretinopathy are like frogs boiling in warm water, and by the time the patient reacts to the significant loss of vision, it may be too late to restore the lost vision. Ocular complications are common in diabetics, the most common of which are diabetic retinal retinal profile lesions and cataracts. Long-term poorly controlled diabetes will result in retinopathy in almost 100% of cases as the disease progresses. Diabetes is 25 times more common than non-diabetic blindness. Currently, diabetic retinopathy has become one of the four major blindness-causing diseases. Therefore, diabetic patients should take the following measures to protect their eyes: 1. Actively and effectively control diabetes, so that blood sugar is reduced to normal or close to normal. 2. Actively treat hypertension. Hypertension contributes to the occurrence of diabetic retinopathy and accelerates its development. 3. Early detection of ocular complications. A comprehensive eye examination should be done in the following cases: (1) When diabetes is diagnosed, a comprehensive eye examination should be done, including: measurement of visual acuity, measurement of intraocular pressure, and fundus examination. If you have retinopathy, you should have it reviewed several times a year. (2) Diabetic women should have their fundus checked within 12 months before they plan to get pregnant and when they are sure to get pregnant, and then they should be reviewed regularly according to the doctor’s requirements. (3) Increased intraocular pressure and decreased visual acuity. Retinopathy has been found, eye symptoms that cannot be explained, proliferative retinopathy macular edema, all of them should be checked by ophthalmologist comprehensively. 4, timely treatment. In addition to effective control of blood sugar and blood pressure, early retinopathy can be treated with Chinese medicine. Laser treatment can be used when proliferative retinopathy and macular edema appear. Cataracts need to be treated surgically.