If you have diabetes, you've probably heard of this. High blood sugar can weaken and damage the blood vessels of the retina, causing bleeding and other changes that can affect vision. In some cases, these changes can even lead to blindness over time. But regular screening offers the chance of early detection and treatments that will slow the progression of diabetic retinopathy.

Source:http://www.realage.com/check-your-health/eye-health/diabetic-retinopathy