COMPARISON AND EVALUATION OF AMERICAN OPTICAL CO. PSEUDO-ISOCHROMATIC PLATES, FIRST AND SECOND EDITIONS
Abstract
From the result of the present experiment in which two editions of the American Optical Company's 'Fseudo-Isochromatic Plates for Testing Color Perception' were administered to 200 individuals of the U. S. Navy, the following conclusions are drawn: (1) Personnel showing hesitancy or difficulty with the first edition showed hesitancy with the second edition. (2) Known color weak persons were detected by use of the second edition but some individuals were designated as color-weak who passed the requirements for color perception according to present Navy standards by the use of the first edition. (3) There are indications that the new test is probably more difficult to memorize. (4) Most of the medical officers consulted agree that the new edition is decidedly easier to administer. (5) The second edition shows a greater disparity than the first edition both in the number of failures among plates of the same group, and among the groups themselves. (6) Artificial daylight illumination gives superior performance in the selection of color weak individuals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 16, 1945
- Accession Number
- AD0638203
Entities
People
- John H. Sulzman