title: Color vision changes in young subjects acutely exposed to 3,000 m altitude.
abstract: BACKGROUND
  Performance of mountaineers, civil aircraft pilots, and of the personnel involved in many military operations in high mountains may rely on color discrimination at these moderate levels. The authors aimed at investigating the effects of moderate altitude (3000 m) exposure on color vision.
  
  
  METHODS
  Sixteen high school students, ages ranging between 14 and 17 yr, were enrolled in this study. Their color vision was examined with the Farnsworth-Munsell 100-Hue (FM-100 Hue) test at 1060 and 3000 m above the sea level and the total number of errors (all 4 sectors together) compared. Number of errors was also calculated for each of 4 sub-sectors and compared between these two altitudes.
  
  
  RESULTS
  There was a statistically significant increase in total number of errors (p = 0.001) as well as in number of errors in sector 1 (p = 0.007) and sector 3 (p = 0.013) at 3000 m when compared with 1060 m.
  
  
  CONCLUSIONS
  Moderate altitude (3000 m) adversely affected the total number of errors on FM-100 Hue color vision testing of an acclimatized group of young individuals in a photopic environment and this deterioriation was significant in the blue-yellow range.
authors.affiliation: Dept. of Ophthalmology, Erciyes University Faculty of Medicine, Kayseri, Turkey. sarper2002@yahoo.com
authors.forename: Sarper
authors.initials: S
authors.lastname: Karakucuk
authors.forename: Ayse O
authors.initials: AO
authors.lastname: Oner
authors.forename: Sertan
authors.initials: S
authors.lastname: Goktas
authors.forename: Ergun
authors.initials: E
authors.lastname: Siki
authors.forename: Oznur
authors.initials: O
authors.lastname: Kose
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000531:Altitude; D000532:Altitude Sickness / Q000503:physiopathology*; D003118:Color Perception / Q000502:physiology*; D005260:Female; D006801:Humans; D000860:Hypoxia / Q000150:complications*; D008297:Male; D009051:Mountaineering; D014787:Vision Tests