Visual acuity standards. You must be able to read a standard size number plate (with glasses or corrective lenses if necessary) from 20.5 metres (67 feet) or 20 metres (65 feet) where narrower characters 50mm wide are displayed. This requirement is set in law and any person driving on a public highway who is unable to do this is guilty of an

They test both visual field and acuity - that is, the area your sight covers and how clearly you can see. A defect in your visual field may mean you struggle to see approaching hazards without having to look away from the road ahead. A reduction in your visual acuity could give you difficulty in reading road signs and signals.

Learn how to book, prepare and pass the DVLA eye test at Specsavers, the sole partner of the DVLA for medical visual field and visual acuity testing. Find out the minimum eyesight standard for driving, the test duration, the results and the legal eyesight standard for driving.
When you have a notifiable eye condition, such as glaucoma in my case, you have to notify the DVLA but the Esterman test was never designed for testing the ability to drive safely, it’s At this appointment he took my pressure tests reading and then informed me that they were in the mid-twenties range and that I was severely visually impaired and that if I did not inform the DVLA forthwith, then he would.I gave in and informed the DVLA who arranged for a test with Specsavers.
The DVLA accepted supporting clinical evidence; her subsequent practical driving assessment demonstrated successful adaptation and her licence was also restored. Conclusions. Conventional visual field tests are not necessarily predictive of real-world driving performance, with drivers' adaptive strategies not being accommodated.
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dvla visual field test requirements