As per NICE (National Institute for Health and Care Excellence, UK) guidelines, screening your eyes at least once in a year can help diagnose diabetic retinopathy in its early stages, prevent worsening symptoms and is key in avoiding blindness
Diabetic retinopathy is a complication of diabetes that affects the light-sensitive layer in the back of the eye called retina. The retina takes pictures and transmits them to the brain to process. High level of blood sugar can, over time, damage the tiny blood vessels in the retina and lead to permanent loss of vision.
Most people do not experience any noticeable symptoms in the early stages of diabetic retinopathy. As it worsens people may experience the following :
In addition, fluid can leak in the center of the retina and can cause swelling, which can occur at any stage of diabetic retinopathy, although it is more likely to occur as the disease progresses.