Sometimes diabetes causes the kidneys to lose their ability to filter properly. As a result, proteins that body needs is lost in the urine and wastes that body don't need build up in the blood. Kidney disease causes no symptoms until the kidney are badly damaged. Kidney damaged can not be reversed. What is EYE damage.
Diabetes can lead to an eye disease called diabetic retinopathy.
Retina is the lining at the back of the eye that senses light. It acts like the film in a camera. In nonproliferative retinopathy, the milder form, blood vessels leak blood and fluid into the eye. In the more severe but rarer form, prolifertive retinopathy, new blood vessels sprout and grow out of control. They can bleed or cause scarring, which pulls on the retina.