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Article: Prevalence and causes of visual impairment and blindness in an urban Indian population: The Singapore Indian eye study

TitlePrevalence and causes of visual impairment and blindness in an urban Indian population: The Singapore Indian eye study
Authors
Issue Date2011
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ophtha
Citation
Ophthalmology, 2011, v. 118 n. 9, p. 1798-1804 How to Cite?
AbstractPurpose: To describe the prevalence and causes of visual impairment and blindness in an urban Indian population. Design: Population-based study. Participants: Ethnic Indians aged more than 40 years living in Singapore. Methods: Participants underwent standardized ophthalmic assessments for visual impairment and blindness, defined using best-corrected visual acuity (BCVA) and presenting visual acuity (PVA), according to US and modified World Health Organization (WHO) definitions. Main Outcome Measures: Unilateral visual impairment or blindness was defined on the basis of the worse eye, and bilateral visual impairment or blindness was defined on the basis of the better eye. Primary causes of visual impairment were determined. Results: A total of 3400 eligible individuals (75.6% response rate) participated. On the basis of US definitions, the age-standardized prevalence was 0.4% for bilateral blindness (≤20/200, better eye) and 3.4% for bilateral visual impairment (<20/40 to >20/200, better eye). Another 0.3% of bilateral blindness and 13.4% of bilateral visual impairment were correctable with refraction. Cataract was the principal cause of best-corrected bilateral blindness (60.0%) and bilateral visual impairment (65.7%). Other major causes of blindness and visual impairment included diabetic retinopathy, age-related macular degeneration, glaucoma, corneal opacity, and myopic maculopathy. Conclusions: The prevalence of bilateral blindness and visual impairment in Indians living in Singapore is lower than estimates from populations living in India, but similar to estimates obtained from Singapore Malay and Chinese populations. Cataract is the leading cause of blindness and visual impairment. One in 20 cases of bilateral blindness and 1 in 10 cases of bilateral visual impairment are attributable to diabetic retinopathy. These data may have relevance to many ethnic Indian persons living outside India. Financial Disclosure(s): The author(s) have no proprietary or commercial interest in any materials discussed in this article. © 2011 American Academy of Ophthalmology.
Persistent Identifierhttp://hdl.handle.net/10722/183611
ISSN
2015 Impact Factor: 6.75
2015 SCImago Journal Rankings: 4.745
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZheng, Yen_US
dc.contributor.authorLavanya, Ren_US
dc.contributor.authorWu, Ren_US
dc.contributor.authorWong, WLen_US
dc.contributor.authorWang, JJen_US
dc.contributor.authorMitchell, Pen_US
dc.contributor.authorCheung, Nen_US
dc.contributor.authorCajucomUy, Hen_US
dc.contributor.authorLamoureux, Een_US
dc.contributor.authorAung, Ten_US
dc.contributor.authorSaw, SMen_US
dc.contributor.authorWong, TYen_US
dc.date.accessioned2013-05-28T06:15:22Z-
dc.date.available2013-05-28T06:15:22Z-
dc.date.issued2011en_US
dc.identifier.citationOphthalmology, 2011, v. 118 n. 9, p. 1798-1804en_US
dc.identifier.issn0161-6420en_US
dc.identifier.urihttp://hdl.handle.net/10722/183611-
dc.description.abstractPurpose: To describe the prevalence and causes of visual impairment and blindness in an urban Indian population. Design: Population-based study. Participants: Ethnic Indians aged more than 40 years living in Singapore. Methods: Participants underwent standardized ophthalmic assessments for visual impairment and blindness, defined using best-corrected visual acuity (BCVA) and presenting visual acuity (PVA), according to US and modified World Health Organization (WHO) definitions. Main Outcome Measures: Unilateral visual impairment or blindness was defined on the basis of the worse eye, and bilateral visual impairment or blindness was defined on the basis of the better eye. Primary causes of visual impairment were determined. Results: A total of 3400 eligible individuals (75.6% response rate) participated. On the basis of US definitions, the age-standardized prevalence was 0.4% for bilateral blindness (≤20/200, better eye) and 3.4% for bilateral visual impairment (<20/40 to >20/200, better eye). Another 0.3% of bilateral blindness and 13.4% of bilateral visual impairment were correctable with refraction. Cataract was the principal cause of best-corrected bilateral blindness (60.0%) and bilateral visual impairment (65.7%). Other major causes of blindness and visual impairment included diabetic retinopathy, age-related macular degeneration, glaucoma, corneal opacity, and myopic maculopathy. Conclusions: The prevalence of bilateral blindness and visual impairment in Indians living in Singapore is lower than estimates from populations living in India, but similar to estimates obtained from Singapore Malay and Chinese populations. Cataract is the leading cause of blindness and visual impairment. One in 20 cases of bilateral blindness and 1 in 10 cases of bilateral visual impairment are attributable to diabetic retinopathy. These data may have relevance to many ethnic Indian persons living outside India. Financial Disclosure(s): The author(s) have no proprietary or commercial interest in any materials discussed in this article. © 2011 American Academy of Ophthalmology.en_US
dc.languageengen_US
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ophthaen_US
dc.relation.ispartofOphthalmologyen_US
dc.subject.meshAgeden_US
dc.subject.meshAsian Continental Ancestry Group - Ethnologyen_US
dc.subject.meshBlindness - Ethnology - Therapyen_US
dc.subject.meshCross-Sectional Studiesen_US
dc.subject.meshEye Diseases - Ethnologyen_US
dc.subject.meshEyeglassesen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshIndia - Ethnologyen_US
dc.subject.meshMaleen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshPrevalenceen_US
dc.subject.meshSingapore - Epidemiologyen_US
dc.subject.meshUrban Population - Statistics & Numerical Dataen_US
dc.subject.meshVision Testsen_US
dc.subject.meshVision, Low - Ethnology - Therapyen_US
dc.subject.meshVisual Acuity - Physiologyen_US
dc.subject.meshVisually Impaired Persons - Statistics & Numerical Dataen_US
dc.titlePrevalence and causes of visual impairment and blindness in an urban Indian population: The Singapore Indian eye studyen_US
dc.typeArticleen_US
dc.identifier.emailCheung, N: dannycheung@hotmail.comen_US
dc.identifier.authorityCheung, N=rp01752en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.ophtha.2011.02.014en_US
dc.identifier.pmid21621261-
dc.identifier.scopuseid_2-s2.0-80052455702en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80052455702&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume118en_US
dc.identifier.issue9en_US
dc.identifier.spage1798en_US
dc.identifier.epage1804en_US
dc.identifier.isiWOS:000294479200016-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridZheng, Y=16240506800en_US
dc.identifier.scopusauthoridLavanya, R=23492602100en_US
dc.identifier.scopusauthoridWu, R=7402945054en_US
dc.identifier.scopusauthoridWong, WL=16311065000en_US
dc.identifier.scopusauthoridWang, JJ=35231432000en_US
dc.identifier.scopusauthoridMitchell, P=7402933815en_US
dc.identifier.scopusauthoridCheung, N=8054683900en_US
dc.identifier.scopusauthoridCajucomUy, H=16309062800en_US
dc.identifier.scopusauthoridLamoureux, E=7003839871en_US
dc.identifier.scopusauthoridAung, T=26643141900en_US
dc.identifier.scopusauthoridSaw, SM=7006402006en_US
dc.identifier.scopusauthoridWong, TY=7403531208en_US

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