Hypoxia, Color Vision Deficiencies, and Blood Oxygen Saturation

Details

• Creators:
  Hovis, Jeffery K. ; Milburn, Nelda J. ; Nesthus, Thomas E.
• Corporate Creators:
  University of Waterloo. School of Optometry ; United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
• Subject/TRT Terms:
  • Hypoxia
  • Color vision
  • Color blindness
  • Vision tests
  • Altitude
  • Oxygen
  • Aviation
• Publication/ Report Number:
  DOT/FAA/AM-13/20
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Office of Aerospace Medicine
• Abstract:
  Chromatic thresholds were measured using the Cambridge Color Test (CCT), Color Assessment and Diagnosis ; (CAD) test, and Cone Specific Contrast Test at ground and 3780 m (12,400 ft) for subjects with normal color ; vision and red-green color vision defects. The CAD revealed a small (~10%) increase in the red-green thresholds ; for the trichromatic subjects and a similar increase in the blue-yellow thresholds for the dichromats. ; The other two color vision tests did not reveal any significant change in chromatic thresholds. The CAD results ; for the trichromats were consistent with a rotation of the discrimination ellipse counterclockwise, with little ; change in the elliptical area. This alteration in the color discrimination ellipse is consistent with the hypothesis ; that the effects of mild hypoxia on basic visual function are similar to lowering the retinal illuminance.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26638/dot_26638_DS1.pdf
• File Type:
  [PDF - 414.70 KB]
• Collection(s):
  FAA Civil Aerospace Medical Institute ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:685967ad1e89e3b1cd14b4d62dc5732db081bddb1f3f8071ce6d26ac52c5d4a9d383b52b234104d3b91d94366092f48e2dfc16601c5a749d464b46f8ce58fab5