Key points are not available for this paper at this time.
Los Angeles College of Optometry Los angeles, California *Read before the annual meeting of the American Academy of Optometry, New York, New York, December 10, 1951. For publication in the September, 1952, 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.
Monroe J. Hirsch (Mon,) studied this question.