title: Effects of changes in lighting level on performance with the AcuVision 1000.
abstract: BACKGROUND
  The AcuVision 1000 Trainer is an instrument designed to assess and train eye-hand coordination in athletes. Variable environmental conditions are encountered when sports-vision screenings are performed. The effect of these factors on scores attained on sports-vision testing equipment is an important consideration when results for different populations are compared.
  
  
  METHODS
  This study investigated the effect of different lighting levels on subject performance. Twenty-five subjects performed three trials at each of three lighting levels (day-light, dim room, and dark. The presentation order of lighting level was counterbalanced and subjects were randomly assigned to the various presentation orders.
  
  
  RESULTS
  The results indicate a statistically significant difference in performance at the various levels. High lighting levels decreased scores significantly, whereas there was no significant difference between the two lower levels.
  
  
  CONCLUSIONS
  This study emphasizes the effect lighting can have on performance, and illustrates the need to properly control environmental factors through well-defined testing protocols for the use of the AcuVision 1000.
authors.affiliation: Illinois College of Optometry, Chicago 60025, USA.
authors.forename: S
authors.initials: S
authors.lastname: Beckerman
authors.forename: A M
authors.initials: AM
authors.lastname: Fornes
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008029:Lighting; D008297:Male; D011597:Psychomotor Performance; D011930:Reaction Time; D012016:Reference Values; D013177:Sports; D014787:Vision Tests / Q000295:instrumentation*