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Optom Vis Sci. 1999 May;76(5):266-71.

Factors associated with the prevalence of myopia in 6-year-olds.

Author information

  • School of Optometry, University of Waterloo, Ontario, Canada.

Abstract

PURPOSE:

To describe the frequency of and risk factors associated with myopia in grade one children.

METHODS:

Refractive error was measured by static retinoscopy, without cycloplegia, for 10,616 children in the first year of a province-wide vision-screening program. Information on factors that might be associated with myopia was collected from parents or guardians by self-administered questionnaires distributed before the vision screening. These factors were evaluated by a case-control method.

RESULTS:

The prevalence of myopia, greater than -0.25 D, was 6%. The estimated relative risk of myopia was increased significantly among children whose birth weight was <2500 g and whose mothers had a history of early spectacle use.

CONCLUSIONS:

Results suggest that the prevalence of myopia in 6-year-old children is associated with both hereditary and nonhereditary factors. In accord with prior work, the results argue that low birth weight has a permanent influence upon eye development.

PMID:
10375239
[PubMed - indexed for MEDLINE]
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