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- W7958584 abstract "This paper represents the next step in an ongoing study intended to produce recommendations and test methods for the appropriate sources for colour vision examination. At a previous symposium we reported results for the Farnsworth-Munsell 100-hue test. In this study the spectral reflectance of the colours of the Ishihara test were measured and the spectral irradiance of the fluorescent tube sources were measured. For each pair of groups of colours intended to be confused by congenital colour deficient subjects, the slope of the regression line was calculated and compared with the slope of the protan and deutan confusion lines through the mean chromaticity point. The mean deviation from the confusion lines was taken as the inverse measure of the adequacy of the source for that plate. This was carried out for each of the ambiguous, disappearing and diagnostic plate types. The deviation was then compared with the deviation of the data for CIE Standard Illuminant C. A source was considered acceptable for a plate type if the deviation was no greater than that for C. Finally, sources are listed which were acceptable for all the plate types." @default.
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- W7958584 date "1993-01-01" @default.
- W7958584 modified "2023-09-26" @default.
- W7958584 title "Suitability of fluorescent tube light sources for the Ishihara test as determined by colorimetric methods" @default.
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- W7958584 doi "https://doi.org/10.1007/978-94-011-1856-9_33" @default.
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