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  1. L. H. Hardy, G. Rand, and M. C. Rittler, Tests for the Detection and Analysis of Color Blindness. 1. The Ishihara Test: An Evaluation, J. Opt. Soc. Am. 35, 268 (1945).
    [Crossref]
  2. For a simple explanation of these terms, see reference 1, page 271; also L. H. Hardy and G. Rand. Recent Developments in Color Vision TestingAm. Acad. Ophth., Outline of Instructional Courses1944. Graduate Lecture Continuous Course No. 6 and 7.

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J. Opt. Soc. Am. (1)

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For a simple explanation of these terms, see reference 1, page 271; also L. H. Hardy and G. Rand. Recent Developments in Color Vision TestingAm. Acad. Ophth., Outline of Instructional Courses1944. Graduate Lecture Continuous Course No. 6 and 7.

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Tables (3)

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Table I Analysis of individual plates. Percentage of each type of color defective subjects passing each plate of the Ishihara test, Editions 5, 7, and 9 (British reprint), and Ishihara plates in American Optical Company’s test. Each plate is designated by series number and plate number as it appears in the edition under consideration.

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Table II Significance of performance scores. Showing for each type of color defective subjects (a) the average performance score achieved by each group; (b) the median or middle score for each group; and (c) the range of scores from lowest to highest achieved by the individuals within each group. Performance score is percentage of the plates to which correct responses were given.

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Table III The classification of deuteranopia and protanopia, deuteranomaly and protanomaly. Analysis of the value of the plates (Series 6) of the 5th, 7th and 9th (British reprint) editions of the Ishihara test as a means of differentiating between types of red-green defect.