Diabetic retinopathy is an eye condition that can cause vision loss and blindness in people who have diabetes. It affects blood vessels in the retina (the light-sensitive layer of tissue in the back of your eye).

If you have diabetes, it’s important for you to get a comprehensive dilated eye exam at least once a year. Diabetic retinopathy may not have any symptoms at first — but finding it early can help you take steps to protect your vision.

Managing your diabetes — by staying physically active, eating healthy, and taking your medicine — can also help you prevent or delay vision loss.