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Suh-Yuh Wu, Barbara Nemesure, M. Cristina Leske; Refractive Errors in a Black Adult Population: The Barbados Eye Study. Invest. Ophthalmol. Vis. Sci. 1999;40(10):2179-2184.
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purpose. To describe the prevalence of refractive errors in a black adult
methods. The Barbados Eye Study, a population-based study, included 4709
Barbados-born citizens, or 84% of a random sample, 40 to 84 years of
age. Myopia and hyperopia were defined as a spherical equivalent<−0.5 diopters and >+0.5 diopters, respectively, based on automated
refraction. Analyses included 4036 black participants without history
of cataract surgery. Associations with myopia and hyperopia were
evaluated in logistic regression analyses.
results. The prevalence of myopia was 21.9% and was higher in men (25.0%) than
in women (19.5%). The prevalence of hyperopia was 46.9% and was
higher in women (51.8%) than in men (40.5%). The prevalence of myopia
decreased from 17% in persons 40 to 49 years of age to 11% in those
50 to 59 years of age, but increased after 60 years of age. The
prevalence of hyperopia increased from 29% at 40 to 49 years of age to
65% at 50 to 59 years of age, and tended to decline thereafter. A
higher prevalence of myopia was positively associated (P <
0.05) with lifetime occupations requiring nearwork, nuclear opacities,
posterior subcapsular opacities, glaucoma, and ocular hypertension.
Factors associated with hyperopia were the same as for myopia, except
for occupation, and in the opposite direction.
conclusions. High prevalences of myopia and hyperopia were found in this large black
adult population. The prevalence of myopia (hyperopia) increased
(decreased) after 60 years of age, which is inconsistent with data from
other studies. The high prevalence of age-related cataract, glaucoma,
and other eye conditions in the Barbados Eye Study population may
contribute to the findings.
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