Introduction
Retinopathy is a frequent complication of diabetes mellitus especially when blood sugar is poorly controlled. The retina is the part of the eye that transforms light into signals transmitted to the brain through the optic nerve (NHS UK 2013). The brain interprets the electrical signals into images corresponding to what was seen. While sufficient blood supply is needed for the retina to function optimally, chronic hyperglycaemia causes ischemia and bleeding in the retinal microvasculature leading to the formation of new capillaries meant to sustain blood circulation in the retina (Vithian & Hurel 2010). However, the new capillaries are fragile and prone ...