School of Optometry, University of California Berkeley, California *Read before the annual meeting of the American Academy of Optometry, Denver, Colorado, December 13, 1966. For publication in the September, 1967, issue of the American Journal of Optometry and Archives of American Academy of Optometry. †Optometrist. Ph.D., Member of faculty. Fellow, American Academy of Optometry.
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Monroe J. Hirsch (1967) studied this question.