Diabetic retinopathy is the most common eye disease caused by diabetes. It occurs when high blood sugar damages the small blood vessels in the retina, the part of the eye that smells of light and sends images to the brain. Over time, these blood vessels can swell, flee liquid or close completely. In more serious cases, new weak blood vessels develop and can bleed, causing vision problems.
At first, diabetic retinopathy may not cause symptoms, but as it worsens, you may notice a blurred vision, dark spots or floats. If it is not treated, it can lead to blindness. The risk increases the more you suffer from diabetes and if your blood sugar is not well controlled.