{"id":"https://openalex.org/W2129432255","doi":"https://doi.org/10.3109/09286586.2011.594205","title":"Cataract Prevalence Varies Substantially with Assessment Systems: Comparison of Clinical and Photographic Grading in a Population-Based Study","display_name":"Cataract Prevalence Varies Substantially with Assessment Systems: Comparison of Clinical and Photographic Grading in a Population-Based Study","publication_year":2011,"publication_date":"2011-07-22","ids":{"openalex":"https://openalex.org/W2129432255","doi":"https://doi.org/10.3109/09286586.2011.594205","mag":"2129432255","pmid":"https://pubmed.ncbi.nlm.nih.gov/21780875"},"language":"en","primary_location":{"id":"doi:10.3109/09286586.2011.594205","doi":"https://doi.org/10.3109/09286586.2011.594205","is_oa":false,"landing_page_url":"https://doi.org/10.3109/09286586.2011.594205","pdf_url":null,"source":{"id":"https://openalex.org/S88738190","display_name":"Ophthalmic Epidemiology","issn_l":"0928-6586","issn":["0928-6586","1744-5086"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","doyens","jufo-1","medline","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Ophthalmic Epidemiology","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5012380371","display_name":"Anna C. S. Tan","orcid":"https://orcid.org/0000-0001-9266-3589","observed_orcids":["https://orcid.org/0000-0001-9266-3589","https://orcid.org/0000-0001-5028-605X"]},"institutions":[{"id":"https://openalex.org/I2799299286","display_name":"Singapore National Eye Center","ror":"https://ror.org/029nvrb94","country_code":"SG","type":"healthcare","lineage":["https://openalex.org/I2799299286"]}],"countries":["SG"],"is_corresponding":true,"raw_author_name":"Anna C. S. Tan","raw_affiliation_strings":["Singapore National Eye Centre, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Singapore National Eye Centre, Singapore","institution_ids":["https://openalex.org/I2799299286"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050742833","display_name":"Jie Jin Wang","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Jie Jin Wang","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034976410","display_name":"Ecosse Luc Lamoureux","orcid":"https://orcid.org/0000-0001-8674-5705","observed_orcids":["https://orcid.org/0000-0001-8674-5705"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ecosse L. Lamoureux","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5143755730","display_name":"Wanling Wong","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210116917","display_name":"Singapore Eye Research Institute","ror":"https://ror.org/02crz6e12","country_code":"SG","type":"facility","lineage":["https://openalex.org/I4210116917"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Wanling Wong","raw_affiliation_strings":["Singapore Eye Research Institute, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Singapore Eye Research Institute, Singapore","institution_ids":["https://openalex.org/I4210116917"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5143823441","display_name":"Paul Mitchell","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Paul Mitchell","raw_affiliation_strings":["Centre for Vision Research, University of Sydney, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre for Vision Research, University of Sydney, Australia","institution_ids":["https://openalex.org/I129604602"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100358351","display_name":"Jialiang Li","orcid":"https://orcid.org/0000-0002-9704-4135","observed_orcids":["https://orcid.org/0000-0002-9704-4135"]},"institutions":[{"id":"https://openalex.org/I165932596","display_name":"National University of Singapore","ror":"https://ror.org/01tgyzw49","country_code":"SG","type":"education","lineage":["https://openalex.org/I165932596"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Jialiang Li","raw_affiliation_strings":["Department of Statistics, National University of Singapore, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Statistics, National University of Singapore, Singapore","institution_ids":["https://openalex.org/I165932596"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051074132","display_name":"Ava Grace Tan","orcid":"https://orcid.org/0000-0003-3344-0339","observed_orcids":["https://orcid.org/0000-0003-3344-0339"]},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]},{"id":"https://openalex.org/I2799299286","display_name":"Singapore National Eye Center","ror":"https://ror.org/029nvrb94","country_code":"SG","type":"healthcare","lineage":["https://openalex.org/I2799299286"]}],"countries":["AU","SG"],"is_corresponding":false,"raw_author_name":"Ava Grace Tan","raw_affiliation_strings":["Singapore National Eye Centre, Singapore","Centre for Vision Research; University of Sydney; Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Singapore National Eye Centre, Singapore","institution_ids":["https://openalex.org/I2799299286"]},{"raw_affiliation_string":"Centre for Vision Research; University of Sydney; Australia","institution_ids":["https://openalex.org/I129604602"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5072258594","display_name":"Tien Yin Wong","orcid":"https://orcid.org/0000-0002-8448-1264","observed_orcids":["https://orcid.org/0000-0002-8448-1264"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Tien Y. Wong","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5012380371"],"corresponding_institution_ids":["https://openalex.org/I2799299286"],"apc_list":null,"apc_paid":null,"fwci":2.1604,"has_fulltext":false,"cited_by_count":38,"citation_normalized_percentile":{"value":0.86760451,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"18","issue":"4","first_page":"164","last_page":"170"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10381","display_name":"Ophthalmology and Visual Impairment Studies","score":0.8651999831199646,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10381","display_name":"Ophthalmology and Visual Impairment Studies","score":0.8651999831199646,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11291","display_name":"Intraocular Surgery and Lenses","score":0.1264999955892563,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10170","display_name":"Retinal Diseases and Treatments","score":0.0008999999845400453,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/age-related-cataract","display_name":"senile cataract","score":0.9290000200271606},{"id":"https://openalex.org/keywords/cataract-prevalence","display_name":"cataract prevalence","score":0.9739999771118164},{"id":"https://openalex.org/keywords/nuclear-cataract","display_name":"nuclear cataract","score":0.8410000205039978},{"id":"https://openalex.org/keywords/cortical-cataract","display_name":"cortical cataract","score":1.0},{"id":"https://openalex.org/keywords/method-agreement","display_name":"measurement agreement","score":0.6330000162124634}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9205495715141296},{"id":"https://openalex.org/C2777286243","wikidata":"https://www.wikidata.org/wiki/Q5591926","display_name":"Grading (engineering)","level":2,"score":0.6218318343162537},{"id":"https://openalex.org/C119767625","wikidata":"https://www.wikidata.org/wiki/Q618211","display_name":"Optometry","level":1,"score":0.5505703091621399},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.529403805732727},{"id":"https://openalex.org/C118487528","wikidata":"https://www.wikidata.org/wiki/Q161437","display_name":"Ophthalmology","level":1,"score":0.5166804790496826},{"id":"https://openalex.org/C2775888743","wikidata":"https://www.wikidata.org/wiki/Q1818260","display_name":"Cataract surgery","level":2,"score":0.4911443889141083},{"id":"https://openalex.org/C2780929884","wikidata":"https://www.wikidata.org/wiki/Q737460","display_name":"Blindness","level":2,"score":0.4450986981391907},{"id":"https://openalex.org/C99454951","wikidata":"https://www.wikidata.org/wiki/Q932068","display_name":"Environmental health","level":1,"score":0.15485844016075134},{"id":"https://openalex.org/C147176958","wikidata":"https://www.wikidata.org/wiki/Q77590","display_name":"Civil engineering","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000369","descriptor_name":"Aged, 80 and over","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002386","descriptor_name":"Cataract","qualifier_ui":"Q000145","qualifier_name":"classification","is_major_topic":true},{"descriptor_ui":"D002386","descriptor_name":"Cataract","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":false},{"descriptor_ui":"D002386","descriptor_name":"Cataract","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":true},{"descriptor_ui":"D003941","descriptor_name":"Diagnostic Techniques, Ophthalmological","qualifier_ui":"Q000592","qualifier_name":"standards","is_major_topic":true},{"descriptor_ui":"D006302","descriptor_name":"Health Services Research","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010781","descriptor_name":"Photography","qualifier_ui":"Q000592","qualifier_name":"standards","is_major_topic":true},{"descriptor_ui":"D012846","descriptor_name":"Singapore","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":false},{"descriptor_ui":"D015995","descriptor_name":"Prevalence","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D044466","descriptor_name":"Asian People","qualifier_ui":"Q000208","qualifier_name":"ethnology","is_major_topic":false}],"locations_count":3,"locations":[{"id":"doi:10.3109/09286586.2011.594205","doi":"https://doi.org/10.3109/09286586.2011.594205","is_oa":false,"landing_page_url":"https://doi.org/10.3109/09286586.2011.594205","pdf_url":null,"source":{"id":"https://openalex.org/S88738190","display_name":"Ophthalmic Epidemiology","issn_l":"0928-6586","issn":["0928-6586","1744-5086"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","doyens","jufo-1","medline","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Ophthalmic Epidemiology","raw_type":"journal-article"},{"id":"pmid:21780875","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/21780875","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Ophthalmic epidemiology","raw_type":"Comparative Study"},{"id":"pmh:oai:scholarbank.nus.edu.sg:10635/109226","doi":null,"is_oa":false,"landing_page_url":"http://scholarbank.nus.edu.sg/handle/10635/109226","pdf_url":null,"source":{"id":"https://openalex.org/S7407052290","display_name":"National University of Singapore","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Scopus","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being","score":0.9763000011444092}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":32,"referenced_works":["https://openalex.org/W46402055","https://openalex.org/W1428480121","https://openalex.org/W1519124436","https://openalex.org/W1578291812","https://openalex.org/W1605505097","https://openalex.org/W1973097676","https://openalex.org/W1976049637","https://openalex.org/W1979946596","https://openalex.org/W1990543131","https://openalex.org/W2005098826","https://openalex.org/W2017466146","https://openalex.org/W2025839661","https://openalex.org/W2037154278","https://openalex.org/W2038835377","https://openalex.org/W2057394958","https://openalex.org/W2069397863","https://openalex.org/W2071588905","https://openalex.org/W2071811945","https://openalex.org/W2073520183","https://openalex.org/W2089945049","https://openalex.org/W2090951971","https://openalex.org/W2099838434","https://openalex.org/W2106879392","https://openalex.org/W2108986293","https://openalex.org/W2117526385","https://openalex.org/W2125044331","https://openalex.org/W2130502069","https://openalex.org/W2144059446","https://openalex.org/W2168386086","https://openalex.org/W2168889968","https://openalex.org/W2169150093","https://openalex.org/W2597267452"],"related_works":["https://openalex.org/W1971173319","https://openalex.org/W2057394958","https://openalex.org/W3217439964","https://openalex.org/W200003407","https://openalex.org/W2106879392","https://openalex.org/W2006395498","https://openalex.org/W2089945049","https://openalex.org/W2167968312","https://openalex.org/W46402055","https://openalex.org/W4292372411"],"abstract_inverted_index":{"PURPOSE:":[0],"Cataract":[1,47],"is":[2,11,58],"the":[3,34,45,94,108,123,171,175,183,230,240],"major":[4],"cause":[5],"of":[6,62,70,122,177,214],"blindness":[7],"worldwide":[8],"yet":[9],"there":[10],"no":[12],"consensus":[13],"on":[14,141],"its":[15],"assessment":[16,32],"and":[17,41,73,86,89,112,145,158,203,247,252],"definition.":[18],"This":[19,237],"study":[20,61,238],"compares":[21],"age-related":[22],"cataract":[23,76,104,130,179,188,198,206,215,234,249],"prevalence":[24,105,176,213],"derived":[25],"from":[26],"two":[27,109,124,231],"commonly":[28],"used":[29],"methods:":[30],"clinical":[31,253],"using":[33,44,83,93,229],"Lens":[35],"Opacity":[36],"Classification":[37],"System":[38,49],"(LOCS":[39,191],"III)":[40,192],"photographic":[42,91],"grading":[43,92,110,125,235],"Wisconsin":[46,95,146,184],"Grading":[48],"(Wisconsin":[50,195],"System).":[51],"METHODS:":[52],"The":[53,212],"Singapore":[54,64],"Malay":[55],"Eye":[56],"Study":[57],"a":[59,217],"population-based":[60],"3,280":[63],"Malays":[65],"aged":[66],"40-80":[67],"years.":[68],"Presence":[69],"nuclear,":[71],"cortical":[72,148,197],"posterior":[74,204],"sub-capsular":[75,205],"was":[77,117],"assessed":[78],"clinically":[79],"during":[80],"slit-lamp":[81,88],"examination":[82],"LOCS":[84,143,152,163,172],"III,":[85,153,164],"via":[87],"retro-illumination":[90],"System.":[96],"Analyses":[97],"were":[98],"conducted":[99],"to":[100,136,182,245],"determine":[101],"agreement":[102,116],"in":[103,151,156,162,168,216],"estimates":[106,227],"between":[107,119],"Systems":[111],"approaches.":[113],"RESULTS:":[114],"Poor":[115],"found":[118,228],"severity":[120],"levels":[121],"scales":[126],"for":[127,242,250],"all":[128],"three":[129],"types.":[131],"Using":[132],"currently":[133],"accepted":[134],"cut-offs":[135],"define":[137,248],"nuclear":[138,187],"(\u2265":[139,149,160],"4":[140],"both":[142],"III":[144,173],"System),":[147,196],"2":[150,161],"\u2265":[154,165],"25%":[155],"Wisconsin)":[157,169],"PSC":[159],"5":[166],"%":[167],"cataract,":[170],"overestimated":[174],"significant":[178],"as":[180],"compared":[181],"System,":[185],"with":[186,224],"prevalence,":[189,199,207],"27.5%":[190],"versus":[193,201,209],"17.0%":[194],"27.9%":[200],"7.0%":[202],"7.8%":[208],"5.1%.":[210],"CONCLUSION:":[211],"population":[218],"varies":[219],"substantially":[220],"by":[221],"measurement":[222],"methods,":[223],"systematically":[225],"different":[226],"most":[232],"frequent":[233],"systems.":[236],"re-emphasizes":[239],"need":[241],"global":[243],"standards":[244],"assess":[246],"epidemiologic":[251],"studies.":[254]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":1},{"year":2016,"cited_by_count":5},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":3}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}