Comparison of age-specific cataract prevalence in two population-based surveys 6 years apart.

BMC Ophthalmology
Ava Grace TanPaul Mitchell

Abstract

In this study, we aimed to compare age-specific cortical, nuclear and posterior subcapsular (PSC) cataract prevalence in two surveys 6 years apart. The Blue Mountains Eye Study examined 3654 participants (82.4% of those eligible) in cross-section I (1992-4) and 3509 participants (75.1% of survivors and 85.2% of newly eligible) in cross-section II (1997-2000, 66.5% overlap with cross-section I). Cataract was assessed from lens photographs following the Wisconsin Cataract Grading System. Cortical cataract was defined if cortical opacity comprised > or = 5% of lens area. Nuclear cataract was defined if nuclear opacity > or = Wisconsin standard 4. PSC was defined if any present. Any cataract was defined to include persons who had previous cataract surgery. Weighted kappa for inter-grader reliability was 0.82, 0.55 and 0.82 for cortical, nuclear and PSC cataract, respectively. We assessed age-specific prevalence using an interval of 5 years, so that participants within each age group were independent between the two surveys. Age and gender distributions were similar between the two populations. The age-specific prevalence of cortical (23.8% in 1st, 23.7% in 2nd) and PSC cataract (6.3%, 6.0%) was similar. The prevalence of nuclear ca...Continue Reading

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Citations

Nov 23, 2012·Ophthalmic Epidemiology·Ava Grace TanTien Yin Wong
Mar 13, 2009·Clinical & Experimental Ophthalmology·Hannah Y Y LeeJames M Coxon
Dec 3, 2008·Veterinary Ophthalmology·Hannah Y Y LeeLucinda J G Robertson
Oct 27, 2018·Clinical & Experimental Ophthalmology·William YanMingguang He
Nov 8, 2017·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·A K SchusterN Pfeiffer
Jan 16, 2008·Nanotechnology·Ronald A SchacharLun Ma
Jan 1, 2008·Drugs in R&D·Nicola PescosolidoPanagiotis Karavitis
Jan 27, 2010·Ophthalmic Epidemiology·Paul A AthanasiovR J Casson
Jul 6, 2019·The British Journal of Ophthalmology·Wei DaiChing-Yu Cheng
Apr 8, 2020·Clinical & Experimental Ophthalmology·Ava Grace TanChing-Yu Cheng
Mar 1, 2011·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·David FeltonUNKNOWN American College of Prosthodontists
Dec 14, 2011·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Carolyn M MachanElizabeth L Irving
Apr 30, 2017·BioResearch Open Access·Kimie MiyataNahoko Ogata
Mar 13, 2019·International Journal of Environmental Research and Public Health·Declan Timothy Waugh

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