Diabetes can cause blurred vision in the eyes in a variety of ways, including cataracts, diabetic retinopathy and macular edema. Diabetic blurred vision cannot be restored on its own for any length of time and requires certain treatment measures. Usually cataracts can be restored through surgery, but diabetic retinopathy may not be fully restored. Diabetic patients with poor blood sugar control are prone to complications such as fundopathy, blurred vision, dry eyes and eye fatigue. Early diabetic retinopathy is usually asymptomatic, so regular checkups are needed. Early lesions can be treated with laser therapy to improve vision, but if the best time for treatment is missed, vision loss is difficult to reverse. In addition, blurred vision in the eyes caused by diabetes combined with cataract can be restored after vision through lens replacement. Therefore, early diagnosis and early treatment can help diabetic patients recover their vision. When blurred vision occurs in diabetes, it is necessary to go to the endocrinology department of the hospital for consultation and treatment in a timely manner, firstly to control the blood sugar, and then to treat the lesion accordingly according to the examination results after the blood sugar is stabilized.