Abstract
The use of a conventional TV monitor to detect protan subjects. Bearing in mind the practical relevance of handicaps derived from color-blindness and with the aim of developing a test combining low-cost, good predictive power and easy administration, a conventional TV monitor was used in a luminance adjustement task, allowing to differenciate consistently protan subjects from deutan and normal subjects, that in turn could not to be differentiated with this same procedure. After discussing some possible explanations for these results, some modifications and new developments are suggested that might increase the diagnostic power of the test.
