Rinsho Ganka Volume 70, Issue 12 (November 2016)

Frequency of the faulty color recognition in color vision deficiencies Kaoru Nakamura 1 , Osamu Okajima 2 1Department of Ophthalmology, Tokyo Women's Medical University School of Medicine 2Department of Ophthalmology, Sanraku Hospital pp.1779-1784
Published Date 2016/11/15
DOI https://doi.org/10.11477/mf.1410212082
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Abstract Purpose: To report the frequency and characteristics of color confusion in congenital color defective persons by the color naming method.

Cases and Method: This study was conducted on 723 persons with ages ranging from 20 to 40. The series comprised 109 protanopes, 255 deuteranopes, 102 protanomalies, 209 deuteranomalies, and 48 persons with normal color vision. They were asked to choose the name of the color from 11 basic color names to identify 53 cards that included 12 hues with 4 tones and five phases of lightness in achromatic color.

Results: The erroneous answer rate was 36.3% of protanope, deuteranope 29.6%, protanomaly 11.5%, deuteranomaly 8.3%, normal color vision 1.0%. It was highest from dichromat to anomalous trichromat to normal color vision(p<0.01). Protan was higher than deutan(p<0.01).

Conclusions: It is important for color defective persons to comprehend the frequency and characteristics of color confusion. They should be instructed to have a proper understanding of this knowledge.

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70巻12号 (2016年11月)
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