If these are not corrected, temporary visual fatigue and headaches may occur. For example in America and Japan, temporary visual impairment is officially recognised as an occupational health problem. They believe that this is due to the eyes focusing at the same distance for too many hours. Out of 6 million VDU 'users' in the UK, only one in five have exercised their legal right to an eye test paid for by their employer. Many are not aware of their entitlement.
Some employers are also confused about who is entitled.
Others try to avoid the costs of complying with the law. A 'user' may work from home. Some 'users' will be obvious. Where they are not obvious, criteria in the Guidance to the Regulations will assist in identifying them. In practice, if a number of employees use the same DSE, or if use of the equipment is vital for the job, employers will find it easier to designate all employees who use DSE as 'users'.