Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-26T11:54:08.819Z Has data issue: false hasContentIssue false
  • English
  • Français

Genetic Factors in Myopia

Published online by Cambridge University Press:  01 August 2014

Jon L. Karlsson
Jon L. Karlsson*
Affiliation:
Napa State Hospital, Napa, California, USA
*
1380 Thompson Avenue, Napa, California 94558, USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A school population has been screened to locate same-sexed twins with myopia and also to compare intelligence test performance of myopic and nonmyopic individuals. Augmentation of the twin data by a survey of the world literature has led to the identification of a total of 106 MZ twin pairs, 100 of them concordant for myopia, as well as 41 DZ pairs, 12 concordant. Myopic students score eight points higher on IQ tests than nonmyopes, the entire bell shaped distribution curve being shifted to a higher range. The intellectual gain precedes in time the development of nearsightedness.

Type
7. Twin Studies in Medical and Clinical Genetics
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 25 , Issue 1 , January 1976 , pp. 292 - 294
Copyright
Copyright © The International Society for Twin Studies 1976

References

REFERENCES

Furusho, T. 1957. Studies on the genetic mechanism of short-sightedness. Jap. J. Ophthalmol., 1: 185–190.Google Scholar
Karlsson, J.L. 1973. Genetic relationship between giftedness and myopia. Hereditas, 73: 85–87.Google Scholar
Karlsson, J.L. 1974. Concordance rates for myopia in twins. Clin. Genet., 6: 142–146.CrossRefGoogle ScholarPubMed
Karlsson, J.L. 1975. Evidence for recessive inheritance of myopia. Clin. Genet., 7: 197–202.Google Scholar
Morgan, R.W., Munro, M. 1973. Refractive problems in northern natives. Can. J. Ophthalmol., 8: 226–228.Google Scholar
Orth, H. 1954. Extreme Diskordanz, der Refraktionswerte eineiiger Zwillinge. Klin. Monatsbl. Augenheilkd., 124: 303–306.Google Scholar
Waardenburg, P.J. 1963. Genetics and Ophthalmology. Assen: Van Gorcum.Google Scholar
Young, F. 1961. The effect of restricted visual space on the primate eye. Am. J. Ophthalmol., 52: 799–806.Google Scholar