A study was carried out on volunteer Eskimo families at Barrow, Alaska. The total population consisted of 508 subjects with complete information including a clinical examination as well as refractions with and without cycloplegics. Correlations between refractive errors of parents and children as well as between siblings are determined on 41 family units comprising 197 subjects. The correlations between parents and children were not significantly different from zero, whereas the correlations between siblings were high and significant. These results were interpreted to suggest that there is no major hereditary component involved in development of myopic refractions among the offspring while there is a strong environmental component operating to create the sibling correlations. These interpretations are supported by the fact that there is virtually no myopia among the grandparents or parents but approximately 58% of the offspring are myopic.
*Read before the Annual Meeting of the American Academy of Optometry, Beverly Hills, California, December 8, 1968. For publication in the September, 1969, issue of the American Journal of Optometry and Archives of American Academy of Optometry.
This investigation was supported in part by Research Grant NB 05459 from the National Institute of Neurological Diseases and Blindness, United States Public Health Service, in part by the 6571 Aero Medical Research Laboratory, Holloman Air Force Base, in part by the Naval Arctic Research Laboratory of the Office of Naval Research, in part by the American Optometric Foundation and by Pacific University and Washington State University.
†Psychologist, Ph.D., Member of Faculty. Fellow, American Academy of Optometry.
‡Optometrist, Ph.D., Member of Faculty. Fellow, American Academy of Optometry. Present address—Massachusetts College of Optometry, Boston, Massachusetts.
§Optometrist, Member of Faculty, Fellow, American Academy of Optometry.
© 1969 American Academy of Optometry