The Driver and Vehicle Licensing Agency (DVLA) has issued a crucial reminder to millions of motorists across the United Kingdom who depend on glasses or contact lenses for clear vision. The agency emphasises that these drivers must wear their corrective lenses every single time they get behind the wheel to meet legal eyesight standards, or face serious consequences including prosecution and licence revocation.
Legal Eyesight Requirements for All Drivers
According to DVLA regulations, any driver who requires glasses or contact lenses to achieve clear vision must wear them whenever they are operating a vehicle. The fundamental test involves being capable of reading a standard number plate from a distance of 20 metres away, which is approximately equivalent to the length of five parked cars. This must be done while wearing any corrective lenses that the individual normally uses.
In addition to the number plate test, drivers must satisfy the legal eyesight standard of visual acuity, which is at least 6/12 (or decimal 0.5) on the Snellen scale. This measurement applies when using both eyes together, or the remaining eye if the driver has sight in only one eye. Motorists must also possess an adequate field of vision, which can be properly assessed by an optician through specialist testing procedures.
When Drivers Must Notify the DVLA About Eyesight Conditions
Drivers are legally obliged to inform the DVLA if they develop any medical condition that affects the eyesight in both eyes, or in the remaining eye if they have vision in only one. However, certain common conditions do not need to be reported, including short-sightedness, long-sightedness, or colour blindness, provided the driver can still meet the required vision standards through corrective measures.
Individuals who have undergone laser eye surgery to correct short-sightedness also do not need to notify the DVLA if their eyesight now complies with the legal requirements. If a motorist does declare a medical condition affecting their vision, the DVLA may refer them for a specialist eyesight test with a contracted optician. This test is provided free of charge by the agency.
Drivers can choose to have an eyesight test conducted elsewhere, but they will need to cover the cost themselves. Importantly, the DVLA does not guarantee it will accept the results from external tests unless they include an Esterman visual field test, which is a specific assessment of peripheral vision.
Stricter Standards for Professional Lorry and Bus Drivers
Professional drivers operating lorries or buses must meet more rigorous eyesight requirements than standard motorists. These drivers must have visual acuity of at least 6/7.5 in their best eye and 6/60 in the other eye, as measured on the Snellen scale. They must also have a horizontal field of vision of at least 160 degrees, with no defects within the central 30 degrees of their vision.
Corrective glasses can be worn by professional drivers, provided their lens strength does not exceed +8 dioptres. There is no specific limit for contact lenses, but all vision must still meet the enhanced standards. These stricter criteria are designed to ensure the highest level of safety for passengers and other road users given the size and weight of these vehicles.
Eyesight Assessment During the Driving Test
Eyesight is also critically assessed during the practical driving test administered by the DVLA. At the very beginning of the test, learner drivers must successfully read a number plate on a parked vehicle from the required distance. If they are unable to do so, they automatically fail the test and it will not proceed any further.
In such cases, the DVLA will be notified and the individual's provisional licence will be revoked. To regain their licence, they must first pass a DVSA eyesight test at an official driving test centre before they are permitted to take another practical driving test. This underscores the paramount importance of meeting vision standards from the outset of a driving career.
