Abstract
MR. SHAW'S case is by no means so peculiar as he supposes. I imagine that everyone who has had to do with experimental questions of physiological or psychological optics has found it to be rather the exception than the rule that an investigation of his reagents' eyes has shown their perfect equality—as regards “long” and “short” sight, colour sensitivity, and sensitivity to light. The common preferential use of one eye explains a good deal (cf., e.g., Aubert, “Physiol. d. Netzhaut,” p. 18; Schön, Arch. f. Ophthalmologie, xx. 2, p. 271). Mr. Shaw may also be colour-blind in one eye; the perception of colour difference alone is no criterion. I find it safest to employ the wool, spectrum, and coloured-card tests in combination.
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TITCHENER, E. Peculiar Eyes. Nature 45, 177 (1891). https://doi.org/10.1038/045177b0
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DOI: https://doi.org/10.1038/045177b0
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