THE EFFECT OF CHANGING THE ILLUMINATION ON THE COLORS IN PSEUDO- ISOCHROMATIC PLATES

Abstract

The effect of illumination in changing the relationships between colors is discussed. Particular reference to this change is made concerning color blinds and how their responses to pseudo-isochromatic tests will differ under different lighting conditions. Finally, the application of these conclusions to a particular plate in the present Navy test is shown. Non- standard illumination has the following effects: (1) The intended relationships in the tests no longer hold. (2) The degree of stringency of the test is altered. (3) Under incandescent illumination the test becomes much easier for deuteranomalous observers, and less easy for protanopes.

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Document Details

Document Type
Technical Report
Publication Date
Jan 03, 1944
Accession Number
AD0622220

Entities

People

  • Dean Farnsworth
  • J. D. Reed

Tags

DTIC Thesaurus Topics

  • Biomedical Research
  • Blindness
  • Chromaticity
  • Color Vision
  • Daylight
  • Deficiencies
  • Distortion
  • Fish
  • Illuminants
  • Illumination
  • Navy
  • Neurobehavioral Manifestations
  • Observers
  • Shape
  • Standards
  • Submarine Bases

Fields of Study

  • Physics

Readers

  • Systems Analysis and Design
  • Vision Science/Vision Psychology/Cognitive Neuroscience.