Abstract
The purpose of this experiment was to study the application of the D&H Color Rule for color vision tests by examining the difference in color matching between normal subjects and congenital color defects for different sources of illumination and different visual angles.
A D-EDL65 fluorescent lamp and 100W incandescent lamp were used as illumination lights for visual angles of both 2° and 6° and those results were compared.
When a D-EDL65 fluorescent light was used, the matching points of normal subjects were cooler colors than when an incandescent lamp was used. Also, the color matching points for 6° tended to be cooler colors than those for 2°. By using this device, congenital color defects can be easily detected, since they show locations and ranges of matching points that are different from those of normal subjects. Although it is impossible to discriminate between protans and deutans by this device, we found that discrimination between dichromatism and anomalous trichromatism is a practical possibility. This device thus can be used for the detection and classification of congenital color defects.
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© 1991 Springer Science+Business Media Dordrecht
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Hamano, K., Motohashi, T., Kudo, H., Ohta, Y. (1991). Study of congenital color defects using the D&H color rule. In: Drum, B., Moreland, J.D., Serra, A. (eds) Colour Vision Deficiencies X. Documenta Ophthalmologica Proceedings Series, vol 54. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3774-4_25
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DOI: https://doi.org/10.1007/978-94-011-3774-4_25
Publisher Name: Springer, Dordrecht
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