Video display operators sometimes report eye fatigue and irritation, blurred vision, headaches, dizziness, and pain or stiffness in the neck, shoulders, back, arms, wrists, and hands. These problems usually can be corrected by adjusting the physical and environmental setting where the VDT users work. The relation of the operator to the keyboard and the screen, the operator's posture, the lighting, and the background noise should be carefully examined to prevent discomfort. Work stations and lighting should be arranged to avoid reflections on the screen or surrounding surfaces. Light should be directed so that it does not shine into the operator's eyes when the operator is looking at the screen.
Task lighting enables operators to adjust lighting to their individual preferences.
Glare can result from light reflecting on a VDT screen or shiny keyboard. To avoid glare, display screens may be placed near a window so the line of sight between eye and screen is parallel to the window surface or the windows can be shielded to reduce excessive sunlight. An individual work station should provide the operator with a comfortable sitting position sufficiently flexible to reach, use, and observe the screen, keyboard, and document. Chair height and backrest angle should be easily adjustable. A foot rest may be necessary for short individuals.