More than half of employers (53%) worry that staff driving in the course of business don't have good enough eyesight to do so, according to Specsavers driver research. The survey, of 132 company heads, revealed that 60% of employers do not have a policy to test the eyesight of their staff, and more than two-thirds of employers stated it should be the employees' responsibility to ensure their eyesight is good enough for driving at work.