Abstract

Determinations are made of the minimal intensities in mile-candles at which color-deficient observers could distinguish red and green point sources falling within or just outside the chromaticity limits proposed by Judd. For colors within these limits the minimal intensities are closely related to scores on the Air Forces Color Threshold Test. When slightly yellower greens are included the task is more difficult for the color-deficient observer.

© 1955 Optical Society of America

Color Signal Systems for the Red-Green Color Blind.* An Experimental Test of the Three-Color Signal System Proposed by Judd

Louise L. Sloan and Adelaide Habel
J. Opt. Soc. Am. 45(8) 592-598 (1955)

An Experimental Determination of Some Iso-Chromaticity Lines in Color-Deficient Vision*

Rita M. Halsey and A. Chapanis
J. Opt. Soc. Am. 42(10) 722-739 (1952)

Homogeneity of large-field color matches in congenital red–green color deficients

Allen L. Nagy
J. Opt. Soc. Am. 72(5) 571-577 (1982)

Worldwide prevalence of red-green color deficiency

Jennifer Birch
J. Opt. Soc. Am. A 29(3) 313-320 (2012)

Recognition of Colored Road Traffic Light Signals by Normal and Color-Vision-Defective Observers*

John Nathan, Geoffrey H. Henry, and Barry L. Cole
J. Opt. Soc. Am. 54(8) 1041-1045 (1964)