Hi All, Does anyone know where I can find data on the colors used in the Ishihara plates? Yxys would be nice but anything quantitative will do. Thanks for any pointers. -Jim James A. Ferwerda Program of Computer Graphics 580 Rhodes Hall Cornell University Ithaca, NY 14853 607-255-7365 607-255-0806 (fax) jaf@graphics.cornell.edu http://www.graphics.cornell.edu/~jaf