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Productivity associated with visual status of computer users.

Kent M Daum1, Katherine A Clore, Suzanne S Simms

  • 1School of Optometry, The University of Alabama at Birmingham, Birmingham, Alabama 35294-0010, USA. kdaum@uab.edu

Optometry (St. Louis, Mo.)
|January 14, 2004
PubMed
Summary

Correcting astigmatism in computer users significantly boosts productivity and visual comfort. This study shows that proper vision correction offers a strong return on investment for employers, improving employee performance.

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Area of Science:

  • Ophthalmology
  • Human Factors Engineering
  • Occupational Health

Background:

  • Astigmatism, a common refractive error, can impact visual performance.
  • Computer use is prevalent, making visual comfort and productivity crucial for users.

Purpose of the Study:

  • To investigate the relationship between astigmatic refractive correction and computer user productivity and comfort.
  • To determine if improved visual status enhances productivity and visual comfort.

Main Methods:

  • A double-masked, placebo-controlled, randomized study involving 19-30 year olds with complete vision exams.
  • Subjects performed computer-based visual search and text-editing tasks to assess productivity (completion time, errors).
  • Evaluated the impact of varying degrees of astigmatic miscorrection on task performance.

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Main Results:

  • Productivity increases ranged from 2.5% to 28.7% with 2 D cylinder miscorrection.
  • A conservative estimate suggests a 2.5% productivity increase with appropriate astigmatic correction.
  • A favorable cost-benefit ratio of at least 2.3 was indicated for visual correction.

Conclusions:

  • Astigmatic refractive error significantly impacts productivity and visual comfort during computer tasks.
  • Providing computer-specific eyewear to employees presents a favorable cost-benefit ratio for employers.
  • Optimizing visual correction can enhance employee performance and well-being.