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Titolo:
The epidemiology of cataract in Australia
Autore:
McCarty, CA; Mukesh, BN; Fu, CL; Taylor, HR;
Indirizzi:
Ctr Eye Res Australia, E Melbourne, Vic 3002, Australia Ctr Eye Res Australia E Melbourne Vic Australia 3002 Vic 3002, Australia
Titolo Testata:
AMERICAN JOURNAL OF OPHTHALMOLOGY
fascicolo: 4, volume: 128, anno: 1999,
pagine: 446 - 465
SICI:
0002-9394(199910)128:4<446:TEOCIA>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
BEAVER DAM EYE; BLUE-MOUNTAINS EYE; POSTERIOR SUBCAPSULAR CATARACTS; ULTRAVIOLET-LIGHT EXPOSURE; AGE-RELATED CATARACT; LENS OPACITIES; RISK-FACTORS; SENILE CATARACT; SUPPLEMENT USE; BARBADOS EYE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: McCarty, CA Ctr Eye Res Australia, 32 Gisborne St, E Melbourne, Vic 3002, Australia Ctr Eye Res Australia 32 Gisborne St E Melbourne Vic Australia 3002
Citazione:
C.A. McCarty et al., "The epidemiology of cataract in Australia", AM J OPHTH, 128(4), 1999, pp. 446-465

Abstract

PURPOSE: To describe the prevalence and risk factors for cataract in an Australian population aged 40 years and older. METHODS: Participants were recruited by a household census and stratified,random cluster sampling to represent residents of Victoria, Australia, aged 40 years and older. The following information was collected: initial visual acuity and best-corrected visual acuity, demo graphic details, health history, dietary intake of antioxidants, lifetime ocular ultraviolet B exposure, and clinical eye examination, including lens photography. Cortical opacities were measured in sixteenths. Cortical cataract was defined as opacitygreater than or equal to 4/16 of pupil circumference. Nuclear opacities were graded according to the Wilmer cataract grading scheme, and cataract wasdefined as greater than or equal to nuclear standard 2.0 of four standards. The height and width of any posterior subcapsular opacity was measured and recorded. Posterior subcapsular cataract was defined as posterior subcapsular opacity greater than or equal to 1 mm(2). The worse eye was selected for analysis. Backward stepwise logistic regression was used to quantify independent risk factors for cataract. RESULTS: A total of 3,271 (83% of eligible) of the urban residents, 403 (90% of eligible) nursing home residents, and 1,473 (92% of eligible) rural residents participated. The urban residents ranged in age from 40 to 98 years (mean, 59 years), and 1,511 (46%) were men. The nursing home residents ranged in age from 46 to 101 years (mean, 82 years), and 85 (21%) were men. The rural residents ranged in age from 40 to 103 years (mean, 60 years), and701 (47.5%) were men. The overall weighted rate of cortical cataract was 11.3% (95% confidence limits, 9.68%, 13.0%) excluding cataract surgery and 12.1% (95% confidence limits, 10.5%, 13.8%) including cataract surgery. The risk factors for cortical cataract that remained in the multivariate logistic regression model were age, female gender, diabetes duration greater than5 years, gout duration greater than 10 years, arthritis diagnosis, myopia,use of oral beta-blockers, and increased average annual ocular ultravioletB exposure. Overall, 12.6% (95% confidence limits, 9.61%, 15.7%) of Victorians aged 40 years and older had nuclear cataract including previous cataract surgery, and 11.6% (95% confidence limits, 8.61%, 14.7%) had nuclear cataract excluding previous cataract surgery. In the urban and rural cohorts, age, female gender, rural residence, brown irides, diabetes diagnosed 5 or more years earlier, myopia, age-related maculopathy, having smoked for greater than 30 years, and an interaction between ocular ultraviolet B exposureand vitamin E were all risk factors for nuclear cataract. The rate of posterior subcapsular cataract excluding previous cataract surgery was 4.08% (95% confidence limits, 3.01%, 5.14%), whereas the overall rate of posterior subcapsular cataract including previous cataract surgery was 4.93% (95% confidence limits, 3.68%, 6.17%). The independent risk factors for posterior subcapsular cataract in the urban and rural cohorts that remained were age in years, rural location, use of thiazide diuretics, vitamin E intake, and myopia. CONCLUSIONS: The expected increase in the prevalence of cataract with the aging of the population highlights the need to plan appropriate medical services and public health interventions for primary and secondary prevention. Many of the identified risk factors for cataract in the population have the potential for being modified through public health interventions. (Am J Ophthalmol 1999;128:446-465. (C) 1999 by Elsevier Science Inc. All rights reserved.).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 13:54:25