Prevalence of Refractive Errors in a Brazilian Population: The Botucatu Eye Study

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorSchellini, Silvana Artioli
dc.creatorDurkin, Shane R.
dc.creatorHoyama, Erika
dc.creatorHirai, Flavio
dc.creatorCordeiro, Ricardo
dc.creatorCasson, Robert J.
dc.creatorSelva, Dinesh
dc.creatorPadovani, Carlos Roberto
dc.date2014-05-20T13:36:23Z
dc.date2016-10-25T16:53:27Z
dc.date2014-05-20T13:36:23Z
dc.date2016-10-25T16:53:27Z
dc.date2009-01-01
dc.date.accessioned2017-04-05T20:30:54Z
dc.date.available2017-04-05T20:30:54Z
dc.identifierOphthalmic Epidemiology. Philadelphia: Taylor & Francis Inc, v. 16, n. 2, p. 90-97, 2009.
dc.identifier0928-6586
dc.identifierhttp://hdl.handle.net/11449/12531
dc.identifierhttp://acervodigital.unesp.br/handle/11449/12531
dc.identifier10.1080/09286580902737524
dc.identifierWOS:000265324000005
dc.identifierhttp://dx.doi.org/10.1080/09286580902737524
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/860126
dc.descriptionPurpose: To determine the prevalence and demographic associations of refractive error in Botucatu, Brazil. Methods: A population-based, cross-sectional prevalence study was conducted, which involved random, household cluster sampling of an urban Brazilian population in Botucatu. There were 3000 individuals aged 1 to 91 years (mean 38.3) who were eligible to participate in the study. Refractive error measurements were obtained by objective refraction. Results: Objective refractive error examinations were performed on 2454 residents within this sample (81.8% of eligible participants). The mean age was 38 years (standard deviation (SD) 20.8 years, Range 1 to 91) and females comprised 57.5% of the study population. Myopia (spherical equivalent (SE) < -0.5 dropters (D)) was most prevalent among those aged 30-39 years (29.7%; 95% confidence interval (CI) 24.8-35.1) and least prevalent among children under 10 years (3.8%; 95% confidence interval (CI) 1.6-7.3). Conversely hypermetropia (SE > 0.5D) was most prevalent among participants under 10 years (86.9%; 95% CI 81.6-91.1) and least prevalent in the fourth decade (32.5%; 95% CI 28.2-37.0). Participants aged 70 years or older bore the largest burden of astigmatism (cylinder at least -0.5D) and anisometropia (difference in SE of > 0.5D) with a prevalence of 71.7% (95% CI 64.8-78.0) 55.0% (95% CI 47.6-62.2) respectively. Myopia and hypermetropia were significantly associated with age in a bimodal manner (P < 0.001), whereas anisometropia and astigmatism increased in line with age (P < 0.001). Multivariate modeling confirmed age-related risk factors for refractive error and revealed several gender, occupation and ethnic-related risk factors. Conclusions: These results represent previously unreported data on refractive error within this Brazilian population. They signal a need to continue to screen for refractive error within this population and to ensure that people have adequate access to optical correction.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageeng
dc.publisherTaylor & Francis Inc
dc.relationOphthalmic Epidemiology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectanisometropia
dc.subjectAstigmatism
dc.subjectBrazil
dc.subjecthypermetropia
dc.subjectmyopia
dc.subjectprevalence
dc.subjectrefractive error
dc.subjectrisk factors
dc.titlePrevalence of Refractive Errors in a Brazilian Population: The Botucatu Eye Study
dc.typeOtro


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