Eye Tests in the UK
Eye tests are one of the most underused preventive health measures in the UK. Many adults go years between tests, waiting until vision problems become obvious. A sight test checks both your prescription and the health of your eyes, screening for conditions including glaucoma, macular degeneration, cataracts and diabetic retinopathy.
What a Sight Test Involves
A standard examination takes 20 to 30 minutes and includes: visual acuity test (reading a chart), refraction test (establishing your prescription), assessment of how eyes work together, and examination of internal and external eye structures. Most modern practices use a digital retinal camera to photograph the back of the eye without dilating drops.
NHS Free Eye Tests
Free NHS sight tests are available to: children under 16 (or under 19 in full-time education), adults aged 60+, people with a family history of glaucoma aged 40+, those diagnosed with diabetes or glaucoma, registered partially sighted or blind people, and recipients of means-tested benefits.
Private Eye Test Costs
Private tests cost £20 to £35 at most high-street opticians. Independent opticians charge £40 to £60 for a more comprehensive examination. OCT (optical coherence tomography) retinal scans, which detect early macular degeneration and glaucoma, cost an additional £20 to £50.
How Often to Test
The College of Optometrists recommends every two years for most adults, annually for children, and annually for adults over 70 or those with diabetes or existing eye conditions.
Urgent Symptoms
Book promptly (do not wait for a routine appointment) if you notice: sudden vision changes, new floaters or flashing lights, eye pain, or distorted central vision. These can indicate conditions requiring prompt treatment.
