The Highway Code states motorises must be able to read a car number plate accurately from 20 metres before setting off on a journey. Road users with poor eyesight must always wear their glasses or risk being hit with strict penalties.
Motorists could be hit with a £1,000 fine and up to three points on their driving licence for getting behind the wheel with bad vision.
However, police officers could charge you for dangerous driving offences in some serious cases which will see penalties increase.
If a dangerous driving charge is issued motorists could be forced to pay up to £5,000 and could even face jail time in some extreme circumstances.
Research has shown one in eight motorists decide to not always wear their glasses while driving in a potential safety risk.
Research from ClickMechanic found a third of UK motorists do not get their eyes tested regularly.
A massive six percent of those surveyed admit to never having an eye test.
DirectLine found 13million motorists admit they drive without their glasses sometimes as one-fifth say they never wear them.
Neil Worth added: “We continue to be concerned that there are too many people driving whose eyesight has deteriorated to a dangerous level.
“This puts their own safety at risk, as well as the safety of others sharing the same road space.
“A detailed professional eye examination will mean any problems can be identified and – in the vast majority of cases – corrected, meaning the risks are reduced considerably.”
Car insurance companies may refuse to pay out for repairs if you have an accident while not wearing your glasses.
This is because insurers could see this as an at-fault claim which could see you hit with expensive repair bills.
Alongside poor visibility, the law states that motorists must have an adequate field of vision at all times.
This relates to how wide motorists can see when looking at a fixed position which is important for checking things like a car’s mirrors and blind spots.
The DVLA says they must be informed if motorists have any problems which could affect both eyes.
The agency may revoke a driving licence on medical grounds if vision could put others at risk.
Last year, a Freedom of Information Act request revealed reduced visual acuity led to 269 medical revocations in 2018.
Vision field defects caused 1,218 medical revocations as 666 saw their licences removed purely for a standard visual problem.