Aims. This paper describes a novel test of colour vision using a standard pers onal computer, which is simple and reliable to perform. Methods. Twenty healthy individuals with normal colour vision and 10 healthy individuals with a red/gree n colour defect were tested binocularly at 13 selected points in the CIE (Commis sion International d’Eclairage, 1931) chromaticity triangle, representing the g amut of a computer monitor, where the x, y coordinates of the primary colour pho sphors were known. Results. The mean results from individuals with normal colour vision were compared to those with defective colour vision. Of the 13 points te sted, five demonstrated consistently high sensitivity in detecting colour defect s. Conclusion. The test may provide a convenient method for classifying colour v ision abnormalities.
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