Prevalence and causes of vision impairment and blindness in older adults in Brazil: the São Paulo eye study

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dc.contributor.authorSalomão, Solange Rios [UNIFESP]
dc.contributor.authorCinoto, Rafael Werneck [UNIFESP]
dc.contributor.authorBerezovsky, Adriana [UNIFESP]
dc.contributor.authorAraujo Filho, Arnaud [UNIFESP]
dc.contributor.authorMitsuhiro, Marcia R. K. H. [UNIFESP]
dc.contributor.authorMendieta, Luana [UNIFESP]
dc.contributor.authorMorales, Paulo Henrique de Avila [UNIFESP]
dc.contributor.authorPokharel, Gopal P.
dc.contributor.authorBelfort, Rubens Junior [UNIFESP]
dc.contributor.authorEllwein, Leon B.
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionNepal Netra Jyoti Singh
dc.contributor.institutionNEI
dc.date.accessioned2016-01-24T13:49:25Z
dc.date.available2016-01-24T13:49:25Z
dc.date.issued2008-01-01
dc.description.abstractPurpose: Investigate prevalence and causes of vision impairment/blindness in older adults in a low-middle income area of São Paulo, Brazil. Methods: Cluster sampling, based on geographically defined census sectors, was used in randomly selecting cross-sectionally persons 50 years of age or older. Subjects were enumerated through a door-to-door survey and invited for measurement of presenting and best-corrected visual acuity and an ocular examination. the principal cause was identified for eyes with presenting visual acuity less than 20/32. Results: A total of 4,224 eligible persons in 2,870 households were enumerated, and 3,678 (87.1%) examined. the prevalence of presenting visual acuity 20/32 in both eyes was 61.6% (95% confidence interval [CI]: 59.4%-63.9%), and 80.4% (95% CI: 78.8%-82.1%) with best correction. the prevalence of visual impairment ( 20/63 to 20/200) in the better eye was 4.74% (95% CI: 3.97%-5.53%), and 2.00% (95% CI: 1.52%-2.49%) with best correction. the prevalence of presenting bilateral blindness ( 20/200) was 1.51% (95% CI: 1.20%-1.82%), and 1.07% (95% CI: 0.79%-1.35%) with best correction. Presenting blindness was associated with older age and lack of schooling. Retinal disorders (35.3%) and cataract (28.3%) were the most common causes of blind eyes. Cataract (33.2%), refractive error (32.3%), and retinal disorders (20.3%) were the main causes of vision impairment 20/63 to 20/200, with refractive error (76.8%) and cataract (12.2%) as main causes for eyes with acuity 20/32 to 20/63. Conclusions: Vision impairment is a significant problem in older Brazilians reinforcing the need to implement prevention of blindness programs for elderly people with emphasis on those without schooling.en
dc.description.affiliationUniversidade Federal de São Paulo, Dept Ophthalmol, Vis Inst, UNIFESP Paulista Sch Med, BR-04023062 São Paulo, Brazil
dc.description.affiliationNepal Netra Jyoti Singh, Kathmandu, Nepal
dc.description.affiliationNEI, NIH, Bethesda, MD 20892 USA
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Ophthalmol, Vis Inst, UNIFESP Paulista Sch Med, BR-04023062 São Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent167-175
dc.identifierhttp://dx.doi.org/10.1080/09286580701843812
dc.identifier.citationOphthalmic Epidemiology. Philadelphia: Taylor & Francis Inc, v. 15, n. 3, p. 167-175, 2008.
dc.identifier.doi10.1080/09286580701843812
dc.identifier.issn0928-6586
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/30317
dc.identifier.wosWOS:000257069300006
dc.language.isoeng
dc.publisherTaylor & Francis Inc
dc.relation.ispartofOphthalmic Epidemiology
dc.rightsAcesso restrito
dc.rights.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dc.subjectadultsen
dc.subjectprevalenceen
dc.subjectvision impairmenten
dc.subjectblindnessen
dc.subjectlow-incomeen
dc.titlePrevalence and causes of vision impairment and blindness in older adults in Brazil: the São Paulo eye studyen
dc.typeArtigo
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