Hypoxia, Color Vision Deficiencies, and Blood Oxygen Saturation

Hovis, Jeffery K.; Milburn, Nelda J.; Nesthus, Thomas E.; University of Waterloo. School of Optometry; Civil Aerospace Medical Institute

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Hypoxia, Color Vision Deficiencies, and Blood Oxygen Saturation

2013-11-01
By Hovis, Jeffery K. ; Milburn, Nelda J. ; Nesthus, Thomas E.

[PDF-414.70 KB]

English

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Creators:

Hovis, Jeffery K. ; Milburn, Nelda J. ; Nesthus, Thomas E.

Hovis, Jeffery K. ; Milburn, Nelda J. ; Nesthus, Thomas E. Less -
Corporate Creators:

University of Waterloo. School of Optometry ; Civil Aerospace Medical Institute

University of Waterloo. School of Optometry ; Civil Aerospace Medical Institute Less -
Subject/TRT Terms:

[+]

Altitude Aviation Color Blindness Color Vision Hypoxia Oxygen Vision Tests
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
Collection(s):

FAA Civil Aerospace Medical Institute US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:38ea333c71e014a70c6bef72557e278bad17173f7f68c31ce4c652730ac71234
Download URL:

https://rosap.ntl.bts.gov/view/dot/26638/dot_26638_DS1.pdf
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Hypoxia, Color Vision Deficiencies, and Blood Oxygen Saturation

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