Color-discrimination threshold determination using pseudoisochromatic test plates


We produced a set of pseudoisochromatic plates for determining individual color-difference thresholds to assess test performance and test properties, and analyzed the results. We report a high test validity and classification ability for the deficiency type and severity level [comparable to that of the fourth edition of the Hardy-Rand-Rittler (HRR) test]. We discuss changes of the acceptable chromatic shifts from the protan and deutan confusion lines along the CIE xy diagram, and the high correlation of individual color-difference thresholds and the red-green discrimination index. Color vision was tested using an Oculus HMC anomaloscope, a Farnsworth D15, and an HRR test on 273 schoolchildren, and 57 other subjects with previously diagnosed red-green color-vision deficiency.

DOI: 10.3389/fpsyg.2014.01376

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@inproceedings{Jurasevska2014ColordiscriminationTD, title={Color-discrimination threshold determination using pseudoisochromatic test plates}, author={Kaiva Jurasevska and Maris Ozolinsh and Sergejs Fomins and Ausma Gutmane and Brigita Zutere and Anete Pausus and Varis Karitans}, booktitle={Front. Psychol.}, year={2014} }