The main symptoms of diabetic complications in the eye are blurred vision and vision loss from diabetic retinopathy, as well as eye pain, itching and swelling. When diabetic retinopathy occurs, due to the bleeding and oozing of blood vessels at the bottom of the eye, it will lead to blurred vision, vision loss, and in severe cases, loss of vision or a foreign body sensation in front of the eyes. At this point, evaluation through fundoscopy, CT and other tests is required. In addition, localized eye complications may occur in diabetes, such as eyelid pain, itching and swelling due to conjunctivitis of the eye caused by localized infection, and pain and increased intraocular pressure due to glaucoma. Diabetic patients should actively control their blood sugar and seek medical attention when eye discomfort occurs.