title: [Eye-strain symptoms after work with a computer screen].
abstract: BACKGROUND
  In a laboratory arranged according to ergonomic rules, the influence of the work with screen monitor computer on the visual function was evaluated.
  
  
  METHODS
  Visual efficiency before and after one-hour reading of a text from monitor was compared in 60 persons. There was 50 women and 10 men, aged 22-47. The research scheme comprised 10 trials.
  
  
  RESULTS
  After work with the monitor, the most important changes were the following: diminished power of accommodation, removal of the near point of convergence and deviation of phoria for near vision. Statistical analysis, using Wilcoxon's test revealed significant differences between the results achieved before and after work concerning accommodation and convergence (p < 0.05).
  
  
  CONCLUSIONS
  The results suggest that weakness of these important visual functions could be the cause of eye-strain in computer operators.
authors.affiliation: Zakładu Okulistyki Centrum Naukowego Medycyny Kolejowej w Warszawie.
authors.forename: D
authors.initials: D
authors.lastname: Trusiewicz
authors.forename: M
authors.initials: M
authors.lastname: Niesłuchowska
authors.forename: Z
authors.initials: Z
authors.lastname: Makszewska-Chetnik
mesh_terms: D000328:Adult; D001248:Asthenopia / Q000175:diagnosis / Q000209:etiology*; D016288:Computer Terminals; D006804:Ergonomics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D018709:Statistics, Nonparametric