Farsightedness (Hyperopia) is the result of the visual image being focused behind the retina rather than directly on it. It may be caused by the eyeball being too small or the focusing power being too weak.

If you have diabetes mellitus, your body does not use sugar properly. High blood-sugar levels can damage blood vessels in the retina. This is called diabetic retinopathy. There are two major types of diabetic retinopathy: non proliferative diabetic retinopathy (NPDR) and proliferative diabetic retinopathy (PDR). Many diabetics have mild NPDR.