Drivers should have compulsory eye tests every 10 years, the Association of Optometrists has said.
One in three optometrists say they have assured patients in the last month who continue to drive with vision below the legal standard, their association said.
Motorists must read a number plate from 20 m( 65 ft) in the practical driving test, but there is no follow-up check.
The Department for Transport said a modification to eyesight should be reported by motorists to the DVLA.
“All drivers are required by law to make sure their eyesight is good enough to drive, ” a spokesperson said.
Data from the Department for Transport shows seven people were killed and 63 were seriously injured in collisions on Britain’s roads last year when “uncorrected, defective eyesight” was a contributory factor.
Nine out of 10 optometrists believed the existing rule – that set the onus on motorists to report themselves to the DVLA if they develop eyesight problems – is insufficient.
When drivers pass the age of 70, the emphasis changes a little. Drivers must actively make a declarationevery three years that they are fit to drive. As part of that they must confirm that they meet the minimum eyesight requirement.
Brenda Gutberlet, whose 28 -year-old niece Natalie Wade was killed in 2006 by a 78 -year-old driver who was blind in one eye, says she wants the “outdated statutes on drivers’ medical fitness” changed.