Abstract
Division of Education and Applied Psychology Purdue University Lafayette, Indiana *Submitted on January 29, 1951, for publication in the August, 1951, issue of the American Journal of Optometry and Archives of American Academy of Optometry. †Ph.D. Member of faculty. ‡The author wishes to express appreciation to G. F. Salberg, Superintendent, J. S. Richards, Principal, Academic Department, Colorado State Industrial School, and Wendell Bryan, O. D., Denver, Colorado, for making these data available. §The ortho-rater is a visual testing device manufactured by the Bausch and Lomb Optical Company for the visual classification and placement of industrial employees.
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