Diabetic retinopathy is caused because of injury to the blood vessels within the tissue of tissue of retina. Poor management of glucose is one of the risk factors. The blood vessels might swell and leak fluid and abnormal development of new blood vessels on the surface of the tissue layer is seen. The related connective tissue may contract and detach from retina. Symptoms in initial stages embrace floaters, blurriness, dark areas of vision and difficulty in detecting colours. There is no cure for diabetic retinopathy however will be treated optical laser treatments and surgical removal of vitreous gel (vitrectomy) for good vision. There are four stages in diabetic retinopathy which are classified as mild, moderate and retina.