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Normal and Defective Colour Vision$
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John D. Mollon, Joel Pokorny, and Ken Knoblauch

Print publication date: 2003

Print ISBN-13: 9780198525301

Published to Oxford Scholarship Online: April 2010

DOI: 10.1093/acprof:oso/9780198525301.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 20 October 2021

Extreme Anomalous Trichromatism

Extreme Anomalous Trichromatism

Chapter:
(p.364) Chapter 38 Extreme Anomalous Trichromatism
Source:
Normal and Defective Colour Vision
Author(s):

Jennifer Birch

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198525301.003.0038

Progress in the molecular genetics of colour vision deficiency relies on matching phenotype with genotype. Thus, it is essential that accurate diagnosis of the type of red-green colour deficiency is obtained and that unusual phenotypes, such as extreme anomalous trichromatism, are identified. Accurate diagnosis is obtained by careful determination of the limits of the red-green matching range on a spectral anomaloscope. This chapter shows that extreme anomalous trichromats make matches with a significant excess of both red and green light, but are unable to match all red-green mixture ratios.

Keywords:   colour vision, red-green colour deficiency, spectral anomaloscope, Nagel anomaloscope, anomalous trichromats

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