Abstract

SYNOPSIS

In this paper the characteristics of the self light of the retina are reviewed and compared with those of the light formed by reflex stimulation of the fundamental color sensations. For this purpose the numerous references to self light in Peddie’s recent work on Colour Vision are made the basis of study. Reasons are given to show that the reflex theory will satisfactorily account for the self light; its color tone; the possibility of an invariable color in the spectrum; the smaller degree of saturation of a color formed by mixture of two or more colors on the retina compared with that of its simple spectral equivalent; the threshold values of colors; and the effect on self light phenomena of changes in mechanical pressure in the retina due to variations in blood pressure.

© 1924 Optical Society of America

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