Blurred vision caused by elevated blood sugar can be caused by fundus lesions and eye complications. For this condition, regular treatment is needed, firstly, to control blood sugar well, to control blood sugar within the standard range, to reduce and reverse blurred vision and fundus lesions, and secondly, to take drugs that improve microcirculation in the fundus and promote improvement of fundus lesions, the key is to control blood sugar well, improve blood circulation in the eye and reverse eye lesions. In this case, blood sugar control is the key, diet should be rationed every day, staple food should be less, protein should be sufficient, intake of fiber-rich food, and fresh vegetables, and on the basis of diet control and then with moderate exercise, the purpose of moderate exercise is to promote the reduction of related indicators, such as weight, obesity, etc., which is good for blood sugar control. Therefore, after the blurred vision caused by the lesion of the fundus, the main thing is to control blood sugar, there are not many targeted drugs, or go to the hospital in time to find a specialist for treatment.