Diabetic retinopathy occurs when diabetes damages the small blood vessels in the part of the eye called the retina. These blood vessels can become blocked or leaky, affecting how the retina works. Sometimes abnormal new blood vessels grow, which are weak and can bleed easily.
In the early stages, these changes will not normally affect your sight. However, if left untreated, the retinopathy may get worse and your vision may be affected.
