Visual Demands of Computer Work

Often the letters on a computer screen are not as precise or sharply defined, the level of

contrast of the letters to the background is reduced and the presence of glare and

reflections on the screen may make viewing more difficult.

Viewing distances and angles used for computer work are also often different from

those commonly used for other reading or writing tasks. As a result, the eye focusing

and eye movement requirements for computer work can place additional demands on

the visual system. Older workers particularly may find adjusting to these working

requirements difficult.

Eyeglasses or contact lenses prescribed for general use may not be adequate for

computer work.* Specific occupational lenses prescribed to meet the unique demands

of computer work may be needed.

coatings may help to maximize visual abilities and comfort.

receive eye examinations and occupational eyewear have reported improved comfort

and resolution of their symptoms. The quality and efficiency of their work have also

been improved.

Some computer workers may experience problems with eye focusing or eye

coordination that cannot be adequately corrected with eyeglasses or contact lenses.

A program of optometric vision therapy designed to treat specific binocular vision

dysfunctions may be needed.

12 Special lens designs, lens powers or lens tints or22 Computer workers who

A preventive approach to reducing visual stress from computer work incorporates the

use of rest or alternate task breaks throughout the workday. Many computer tasks are

repetitive and can become stressful both mentally and physically after an extended

period of continuous work. Occasional rest or alternate task breaks are helpful to

combat fatigue and stress. They provide an opportunity to incorporate different and less

visually demanding tasks into the work regimen. Specific rest or task breaks should be

based on the individual visual needs of the operator.