Cataracts in diabetes can be operated. Patients with diabetes who have cataracts that affect the fundus observation must have cataract surgery early. When you have cataract surgery, you must control your blood sugar well. After cataract surgery, many patients do not have much improvement in vision because of changes in the fundus of the eyes due to diabetes. Therefore, patients are often told to check the fundus one month after cataract surgery. If there is not much problem with the fundus, the vision should be restored after the surgery. If there is a problem with the fundus, the recovery of vision will not be particularly good. If there is bleeding or exudation from the fundus, it needs to be treated at this time, otherwise not only the vision will be lost, but it will also cause a series of diabetic fundus lesions in the future, which will eventually lead to neovascular glaucoma and eventually blindness. Therefore, diabetic patients must have their fundus reviewed after cataract surgery.