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Does work with visual display units impair visual activities after work?

S Gur1, S Ron

  • 1Occupational Health and Rehabilitation Institute, Loewenstein Hospital, Raanana, Israel.

Documenta Ophthalmologica. Advances in Ophthalmology
|January 1, 1992
PubMed
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Visual display unit (VDU) workers experience significant visual impairments and reduced accommodation compared to controls. This visual stress impacts their ability to perform visual tasks after work hours.

Area of Science:

  • Ophthalmology
  • Occupational Health
  • Human Factors

Background:

  • Visual display unit (VDU) operation is associated with operator complaints of visual fatigue and stress.
  • Previous research indicates a link between VDU use and visual discomfort.

Purpose of the Study:

  • To investigate visual impairments in VDU workers.
  • To quantify the impact of VDU use on visual functions, specifically accommodation.
  • To correlate work-related visual stress with post-work visual performance.

Main Methods:

  • Two-part study involving standard eye examinations for VDU workers and a control group.
  • Measurement of the near point of accommodation in subjects with correct vision.
  • Comparison of accommodation changes from the start to the end of a four-day work period.

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Main Results:

  • VDU workers exhibited more than twice the rate of visual impairments compared to controls.
  • VDU workers showed a significantly larger decrease in accommodation (0-1.0 diopter) than non-VDU workers (0-0.25 diopter).
  • The dynamic range of accommodation was reduced in VDU workers after the work period.

Conclusions:

  • VDU work contributes to significant visual impairments and accommodative dysfunction.
  • Work-induced visual stress and fatigue negatively affect visual activities outside of work.
  • Findings suggest a need for interventions to mitigate visual strain in VDU operators.