Lorry and bus drivers
You must have a visual acuity at least 0.8 (6/7.5) measured on the Snellen scale in your best eye and at least 0.1 (6/60) on the Snellen scale in the other eye.
You can reach this standard using glasses with a corrective power not more than (+) 8 dioptres, or with contact lenses. There’s no specific limit for the corrective power of contact lenses.
You must have a horizontal visual field of at least 160 degrees, the extension should be at least 70 degrees left and right and 30 degrees up and down. No defects should be present within a radius of the central 30 degrees.
You must tell DVLA if you’ve got any problem with your eyesight that affects either eye.
You may still be able to renew your lorry or bus licence if you can’t meet these standards but held your licence before 1 January 1997.
For more information visit https://www.gov.uk/driving-eyesight-rules