Diabetic retinopathy occurs when diabetes damages the tiny blood vessels inside the retina. You may not notice any changes at first, but symptoms can include:

Blurry or double vision

Rings, flashing lights or blank spots

Dark or floating spots

Pain or pressure in one or both of your eyes

Trouble seeing things out of the corners of your eyes

If you have diabetes, you should have a comprehensive eye exam twice a year. Finding and treating problems early may save your vision.

Treatment options include special glasses and low vision aids.