Abstract

The binocular mixture of 631 mμ and 533 mμ resulting in a match to 582 mμ was compared with monocular mixtures in normal and color-deviant subjects. A haploscopic type of color-mixing apparatus was used which provided for easy, natural binocular fusion. A photopic adaptation field was also provided. The results were (1) All subjects were able to match 582 mμ binocularly. (2) The monocular mixture contained more 533 mμ than the binocular, the ratio being 1.47:1. (3) The binocular match was on the average 17 times more variable than the monocular. (4) Variability was not due to binocular rivalry, as highly trained subjects who experienced little or no rivalry showed no decrease in variability. From these data it was concluded that (1) Binocular matches are different from monocular, possibly implying different physiological mechanisms for each, and (2) The basic Hering and Young-Helmholtz theories are inadequate to account for the data.

© 1962 Optical Society of America

Binocular color fusion limit

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