New Chromaticity Diagram
Simple Test for Color Blindness



Last Update: July 2009              Rhodonine™ and Activa™: See Citation Page

There are a wide variety of tests for abnormal color vision. Most were designed for industrial purposes, to help identify workers that might have a problem performing certain identification and sorting tasks. One of the most widely recognized is used below. Note, however,that the reproduction of these figures is not precise and the surrounding light level is not well controlled. If you fail this test, you might want to talk to an optometrist before jumping to any conclusion.

What numbers do you see ?

             

             

                     



Answers at bottom of page








Answer: Top-Left=25 Top-Right=6 Mid-Left=45 Mid-Right=8 Bottom-Left=56 Bottom-Right=29