Gudlavalleti Venkata Satyanarayana Murthy|Praveen Vashist|Nitin Ashok John|Gopal P. Pokharel|Leon B. Ellwein
Prevelence and Causes of Visual Impairment and Blindness in Older Adults in an Area of India with a High Cataract Surgical Rate
London School of Hygiene & Tropical Medicine|Society for Education Welfare and Action Rural|All India Institute of Medical Sciences|Society for Education Welfare and Action Rural|All India Institute of Medical Sciences|Society for Education Welfare and Action Rural|Society for Education Welfare and Action Rural|National Eye Institute|National Institutes of Health|Society for Education Welfare and Action Rural
background cataract surgical rate csr gujarat india reported 10000 per million population study conducted investigate prevalence causes vision impairmentblindness among older adults high csr areamethods geographically defined cluster sampling used randomly selecting persons 50 years age navsari district subjects 35 study clusters enumerated invited measurement presenting bestcorrected visual acuity ocular examination principal cause identified eyes presenting visual acuity 2032results total 5158 eligible persons enumerated 4738 919 examined prevalence presenting visual impairment 2063 20200 better eye 293 95 confidence interval ci 275312 135 95 ci 120149 best correction prevalence presenting bilateral blindness 20200 69 95 ci 5781 31 95 ci 2537 best correction presenting bestcorrected blindness associated older age illiteracy gender ruralurban residence significantcataract one eyes main cause bilateral blindness 826 followed retinal disorders 89 cataract 503 refractive error 354 main causes eyes vision acuity 2063 20200 refractive error 866 eyes acuity 2032 2063conclusions visual impairment blindness significant problem among elderly gujarat despite reportedly high csr cataract remains predominant cause blindness