Key points are not available for this paper at this time.
School of Optometry, University of California Berkeley, California *Read, in substance, before the First Western Regional Meeting of the American Academy of Optometry, Berkeley, California, April 11, 1954. From a thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Physiological Optics. For publication in the October, 1956, issue of the American Journal of Optometry and Archives of American Academy of Optometry. †Optometrist. Fellow, American Academy of Optometry. Research Fellow, American Optometric Foundation. Now a member of faculty, Division of Optometry, Indiana University, Bloomington, Indiana.
Gordon G. Heath (Mon,) studied this question.