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
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
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.