The incidence of retinopathy in diabetic patients is 21-36% and has the greatest impact on vision. When diabetes is complicated by eye disease, patients learn more about how diabetes can cause retinopathy. In fact, as the duration of diabetes lengthens, the effects on the eyes become more and more obvious. In addition to the commonly referred to diabetic retinopathy, there are also the following types of eye diseases: 1. Myopia: This is manifested by the occurrence of myopia in people who are not myopic or the constant change in eye prescription in people who are already myopic. While replacing glasses, the possibility of diabetes should be thought of. 2, eyelid ptosis: sudden onset of one eyelid ptosis (upper eyelid drooping, can not open the eyes), older patients are more acute, mostly one side of the onset, accompanied by facial pain, at the same time, eye movement is limited, there is a double vision, to find a doctor in time to make the correct diagnosis and treatment. 3, cataract: often manifested as a gradual decline in visual acuity. 4. Paralytic strabismus: It usually starts suddenly and manifests as seeing things in double shadows and limited eye movements. The appearance of the eye is outward or inward skewed. Patients will feel dizzy, walk unsteadily, and in severe cases, nausea and vomiting, and the cause should be promptly identified for active treatment. Once these conditions occur in middle-aged, elderly and diabetic patients, it is important to go to the hospital for examination in order to prevent diabetic eye disease.