Adequate lighting in the workplace is essential if damage to workers' health is to be prevented, so Peter Boyce emphasises the importance of task visibility, explains how to make the visual component of tasks easier, and outlines the aspects of lighting that can cause eyestrain. The lighting in a workplace can influence the occupants in many ways. At the most basic level, the lighting will determine what can be seen and, hence, how quickly and easily visual work can be done. Lighting can also affect the occupants' health - in extreme cases through tissue damage, or, more generally, through eyestrain. It is important for the safety and health practitioner to be able to identify what constitutes good and bad lighting and to have some idea of how bad lighting might be made good.
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