Screening
Diabetic Eye Screening
Diabetic eye screening takes photographs of the back of the eyes to detect early changes from diabetes before they affect your sight.
Quick answer
Diabetic Eye Screening: what it is and what the results mean
Diabetic eye screening uses special photographs of the retina (the light-sensitive layer at the back of the eye) to look for diabetic retinopathy — damage to the tiny blood vessels caused by diabetes.
- Why it is done: It is offered regularly to people with diabetes because retinopathy often causes no symptoms until it is advanced.
- Understanding results: The photographs are graded for signs of retinopathy.
What it is
Diabetic eye screening uses special photographs of the retina (the light-sensitive layer at the back of the eye) to look for diabetic retinopathy — damage to the tiny blood vessels caused by diabetes.
Why it is done
It is offered regularly to people with diabetes because retinopathy often causes no symptoms until it is advanced. Finding changes early allows treatment that can prevent sight loss.
What to expect
Drops are usually put in your eyes to widen the pupils, which can blur vision and cause light sensitivity for a few hours. Photographs are then taken of the back of each eye; the appointment takes about 30 minutes.
Understanding the results
The photographs are graded for signs of retinopathy. Most people show no or only mild changes and continue routine screening; more significant changes lead to closer monitoring or referral for treatment.
Good to know
Risks and limitations
It is a safe test. The drops blur vision temporarily, so you should not drive straight afterwards. Screening detects retinopathy but is not a full eye examination for other conditions.
Education and reference only. This explains the test in general terms and is not medical advice. Always follow the specific instructions from the team arranging your test, and discuss your results with your clinician.
Answers
Diabetic Eye Screening: frequently asked questions
Can I drive after diabetic eye screening?
Usually not immediately, because the eye drops blur your vision and increase sensitivity to light for a few hours. It is best to arrange another way home.
Why do I need screening if my sight seems fine?
Diabetic retinopathy often causes no symptoms until it is advanced, so regular screening detects changes early, when treatment is most effective at preventing sight loss.
Related tests
Other screening investigations
Sources
Where this is drawn from
- NHS — Screening and pregnancy
- NICE — antenatal and screening guidance
- UK National Screening Committee
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