Rapid City, South Dakota *Submitted as a portion of the entrance requirements of the American Academy of Optometry. Received from Examining Board, May 9, 1947. For publication in the August, 1947, issue of the American Journal of Optometry and Archives of American Academy of Optometry. †Optometrist, Fellow, American Academy of Optometry.
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Ralph E. Wick (1947) studied this question.