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Metameric ‘Color Rule’ matches of normal, colour deficient, cataractic, and aphakic observers

Metameric ‘Color Rule’ matches of normal, colour deficient, cataractic, and aphakic observers SUMMARY Metameric matches on the ‘color rule’ under various kinds of illumination, principally of colour temperature 6500°K and 2400°k, were established for colour normal people of both sexes, various ages and ethnic origin. The matches shift in a way which is explicable by the yellow discoloration of the lens and possibly other optic media, with age and general pigmentation. Individuals defective in colour perception differ ‐ as a group ‐ from normal people not only in the position of the average match co‐ordinates, but mostly also in a wider tolerance of accepted matches. By combining average match with tolerance area a useful criterion can be shown to exist for discriminating between normal, protanomalous and deuteranomalous people and to a lesser extent between the two principal classes of dichromats. Similar distinctions can be derived by inspecting the orientation and position of tolerance areas, which for red‐green defects are diagonally oriented but in one tritan defective appeared horizontal. The versatility, cheapness and convenience of the ‘color rule’ for colour vision studies in the field is pointed out. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annals of Human Genetics Wiley

Metameric ‘Color Rule’ matches of normal, colour deficient, cataractic, and aphakic observers

KALMUS, H.
Annals of Human Genetics , Volume 36 (1) – Jul 1, 1972
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References (4)

Publisher
Wiley
Copyright
Copyright © 1972 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0003-4800
eISSN
1469-1809
DOI
10.1111/j.1469-1809.1972.tb00586.x
Publisher site
See Article on Publisher Site

Abstract

SUMMARY Metameric matches on the ‘color rule’ under various kinds of illumination, principally of colour temperature 6500°K and 2400°k, were established for colour normal people of both sexes, various ages and ethnic origin. The matches shift in a way which is explicable by the yellow discoloration of the lens and possibly other optic media, with age and general pigmentation. Individuals defective in colour perception differ ‐ as a group ‐ from normal people not only in the position of the average match co‐ordinates, but mostly also in a wider tolerance of accepted matches. By combining average match with tolerance area a useful criterion can be shown to exist for discriminating between normal, protanomalous and deuteranomalous people and to a lesser extent between the two principal classes of dichromats. Similar distinctions can be derived by inspecting the orientation and position of tolerance areas, which for red‐green defects are diagonally oriented but in one tritan defective appeared horizontal. The versatility, cheapness and convenience of the ‘color rule’ for colour vision studies in the field is pointed out.

Journal

Annals of Human Genetics – Wiley

Published: Jul 1, 1972

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