Diabetes can harm your eyes. It can damage the small blood vessels in your retina, or the back of your eye. This condition is called diabetic retinopathy. Diabetes also increases your risk of glaucoma and other eye problems.
You may not know your eyes are harmed until the problem is very bad. Your doctor can catch problems early if you get regular eye exams. This is very important. The early stages of diabetic retinopathy don't cause changes in vision and you won't have symptoms. Only an eye exam can detect the problem, so that steps can be taken to prevent the retinopathy from getting worse.