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A METHOD FOR QUANTITATIVE SCORING OF THE FARNSWORTH PANEL D‐15

The Farnsworth Dichotomous test or Panel D‐15 is used extensively for the evaluation of colour discrimination in congenital and acquired colour vision defects. This qualitative assessment of colour vision defect type and severity is based on the hue confusions which are represented diagrammatically on the Panel D‐15 score sheet. This paper presents a new proposal for quantitatively scoring the Panel D‐15 based on those hue confusions made by the subject. Such a quantitative score can be used to establish relationships with other visual functions or experimental conditions. The application of the scoring technique to clinical results is illustrated.