The desirability of including routine color vision tests in all eye examinations is widely recognized. Of particular importance is the evaluation of the color vision of civil service applicants, motor vehicle licensees, mariners, railway employees and others whose occupations require normal color vision. Routine school examinations should include some form of color vision testing, but the necessity of examining large classes has frequently led to the omission of color vision testing. The regular physical examination for the military services includes rigorous color vision tests.
When large groups of persons are involved, color vision tests by the present methods are usually arduous and expensive and require the services of numerous examiners. Therefore the need for quick, accurate, acceptable color vision tests of large groups of persons is evident.
The method to be described apparently fulfils the requirements for color vision tests for large groups of subjects. A search of the