Thanks, and wow! How great that is.In the UK, there is a national Diabetic Eye Screening Programme. Each local programme holds a database of everyone in their area who has diabetes. The Programme sends out letters (invitations) to all eligible people on the database every year offering them an appointment to have their retinas photographed. The photos are then examined for diabetic retinopathy by qualified and accredited graders using specialist software. If someone appears to have sight-threatening diabetic retinopathy they are " screen positive" and are referred for further tests and possible treatment by an ophthalmologist. If no retinopathy or only background retinopathy is detected, the person is "screen negative" and will be invited back the following year for more photographs.