What is a diabetic eye screening?
Diabetic eye screening is a vital NHS programme offered to everyone aged 12 and over who has been diagnosed with diabetes (Type 1 or Type 2). The screening specifically looks for diabetic retinopathy — a complication where high blood sugar levels damage the tiny blood vessels in the retina at the back of the eye. Left undetected and untreated, diabetic retinopathy is one of the leading causes of preventable blindness in working-age adults in the UK.
The screening is different from a standard eye test. A trained screener takes high-resolution photographs of the retina after applying drops to dilate your pupils. These images are then graded by specialists who look for signs of damage to the blood vessels — from the earliest, symptomless stages through to more advanced changes that require treatment. If problems are found, you will be referred to a hospital eye clinic for further assessment and, if necessary, treatment such as laser therapy or injections.
You should receive an invitation for diabetic eye screening automatically once your GP has recorded your diabetes diagnosis. Screening is offered annually, though you may be invited more frequently if previous results have shown changes. It is absolutely essential that you attend every screening appointment — diabetic retinopathy often has no symptoms in its early stages, and early treatment is far more effective than late intervention. This screening is separate from your routine optician's eye test, and you should continue to have both.
Who needs a diabetic eye screening?
- Everyone aged 12 and over diagnosed with Type 1 or Type 2 diabetes
- Pregnant women with pre-existing diabetes (screened more frequently during pregnancy)
- Anyone with diabetes who has not attended screening in over a year
What to expect during a diabetic eye screening
- 1You receive an invitation letter from the local diabetic eye screening programme
- 2Eye drops are applied to dilate your pupils — these take about 20 minutes to work
- 3A screener takes digital photographs of the back of each eye using a specialist camera
- 4The photographs are graded by trained specialists and you receive your results by post
- 5If any changes are detected, you may be invited back sooner or referred to a hospital eye clinic
- 6Your vision will be blurry for a few hours after the drops — do not drive until it clears
How much does it cost?
Free — fully funded by the NHS for all eligible patients with diabetes
How often should you have this test?
Annually for most people with diabetes; more frequently if changes are detected or during pregnancy