Stages of Diabetic Retinopathy
In the early stages of diabetic retinopathy, the retinal blood vessels will begin to swell and leak fluid in small areas. Left undetected, those blood vessels will eventually distort and close, preventing blood from flowing freely. In order to compensate for this lack of blood flow, abnormal blood vessels will actually grow on the inside surface of the retina. These newly formed blood vessels will be fragile and will not supply the retina with the blood flow necessary for healthy vision. They may cause bleeding and scar tissue to form.