Micheál Smith (49) lives in Belfast with his wife Sharon. He has type 1 Diabetes and has been insulin dependent since the age of 13. In 2016 Micheál was diagnosed with Proliferative diabetic retinopathy, a condition that is caused by the retinal blood vessels becoming damaged or blocked. When these changes affect a large area of your retina, blood supply to the retina is reduced. This causes problems with vision.