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[Eye-strain symptoms after work with a computer screen]

D Trusiewicz1, M Niesłuchowska, Z Makszewska-Chetnik

  • 1Zakładu Okulistyki Centrum Naukowego Medycyny Kolejowej w Warszawie.

Klinika Oczna
|November 1, 1995
PubMed
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Computer use impacts visual functions, diminishing accommodation and convergence. These changes may contribute to eye strain experienced by computer operators.

Area of Science:

  • Ophthalmology
  • Human Factors Engineering
  • Ergonomics

Background:

  • Evaluated the impact of computer screen use on visual function in an ergonomically designed laboratory setting.
  • Assessed visual performance changes associated with prolonged computer monitor interaction.

Purpose of the Study:

  • To investigate the effects of computer work on key visual functions.
  • To identify potential causes of eye strain among computer users.

Main Methods:

  • Compared visual efficiency in 60 participants (50 women, 10 men; aged 22-47) before and after a one-hour monitor reading task.
  • Utilized a research scheme involving 10 trials to measure visual function changes.
  • Employed Wilcoxon's test for statistical analysis of accommodation and convergence data.

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Main Results:

  • Significant decreases in the power of accommodation and removal of the near point of convergence were observed post-monitor work.
  • A notable deviation of phoria for near vision was identified after computer use.
  • Statistical analysis confirmed significant differences (p < 0.05) in accommodation and convergence before and after monitor work.

Conclusions:

  • Diminished accommodation and convergence following computer use suggest a potential link to computer vision syndrome.
  • Weakening of these visual functions may be a primary cause of eye strain in individuals working extensively with computers.