What is a standard eye test?
A standard eye test — formally known as a sight test — is the foundation of good eye health care in the UK. During this appointment, a qualified optometrist will assess your visual acuity, check your prescription for glasses or contact lenses, and examine the internal and external health of your eyes. The test can detect early signs of conditions such as glaucoma, cataracts, macular degeneration, and even general health issues like diabetes and high blood pressure.
The College of Optometrists recommends that most adults have a routine eye test at least every two years, though your optometrist may advise more frequent visits depending on your age, health, and family history. Even if you feel your eyesight is perfect, regular testing is essential because many eye conditions develop gradually without noticeable symptoms.
In the UK, a standard private eye test typically costs between £20 and £35, though many high-street opticians offer free tests as part of promotional deals. If you qualify for an NHS-funded sight test, you will pay nothing at all. Either way, it is one of the most important health checks you can have — protecting your sight starts with a simple appointment.
Who needs a standard eye test?
- All adults as part of routine health care
- Anyone noticing changes in their vision
- People experiencing headaches or eye strain
- Contact lens wearers (in addition to contact lens check-ups)
- Those with a family history of eye conditions
- Anyone who has not had an eye test in over two years
What to expect during a standard eye test
- 1Your optometrist will ask about your general health, medications, family history, and any vision concerns
- 2A letter chart test (or similar) measures how clearly you can see at various distances
- 3A refraction test determines whether you need glasses or contact lenses, and your exact prescription
- 4An examination of the front of your eye using a slit lamp microscope
- 5Your optometrist will look at the back of your eye (retina) using an ophthalmoscope or retinal camera
- 6An eye pressure check (tonometry) to screen for glaucoma
- 7Your results and any recommendations are discussed at the end of the appointment
How much does it cost?
£20–£35 privately, or free if you qualify for an NHS-funded sight test
How often should you have this test?
Every 2 years for most adults; annually if over 70, diabetic, or at higher risk