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A design of the Double 15-Hue Test for color defects Chun Suk Hahn 1 1Hahn's Eye Clinic pp.785-792
Published Date 1979/6/15
DOI https://doi.org/10.11477/mf.1410207894
  • Abstract
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I developed a new Double 15-Hue Test to classify the types and extent of congenital defec-tive color vision. It consists of a paired dichoto-mous tests, Test A and B which contains 15 color chips each. Test A is a modified Farnsworth's Panel D-15 Test for separating subjects with severe defect from those with medium and mild defects. Test B is composed of more desaturated color chips and is used to separate the subjects with mild defect from those with severe and medium defects. The test thus enables the classi-fication of color-defective subjects into severe (grade 3), medium (grade 2) and mild (grade 1).


Copyright © 1979, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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