Solange Rios Salomão|R. Cinoto|Adriana Berezovsky|Arnaud Araüjo-Filho|Márcia Regina Kimie Higashi Mitsuhiro|Luana Mendieta|Paulo Henrique Morales|Gopal P. Pokharel|Rubens Belfort|Leon B. Ellwein
Prevalence and Causes of Vision Impairment and Blindness in Older Adults in Brazil: The São Paulo Eye Study
Universidade Federal de São Paulo|Instituto da Visão|Universidade Federal de São Paulo|Instituto da Visão|Universidade Federal de São Paulo|Instituto da Visão|Universidade Federal de São Paulo|Instituto da Visão|Universidade Federal de São Paulo|Instituto da Visão|Universidade Federal de São Paulo|Instituto da Visão|Universidade Federal de São Paulo|Instituto da Visão|Universidade Federal de São Paulo|Instituto da Visão|National Eye Institute|National Institutes of Health
purpose investigate prevalence causes vision impairmentblindness older adults lowmiddle income area paulo brazil methods cluster sampling based geographically defined census sectors used randomly selecting crosssectionally persons 50 years age older subjects enumerated doortodoor survey invited measurement presenting bestcorrected visual acuity ocular examination principal cause identified eyes presenting visual acuity less 2032 results total 4224 eligible persons 2870 households enumerated 3678 871 examined prevalence presenting visual acuity 2032 eyes 616 95 confidence interval ci 594639 804 95 ci 788821 best correction prevalence visual impairment 2063 20200 better eye 474 95 ci 397553 200 95 ci 152249 best correction prevalence presenting bilateral blindness 20200 151 95 ci 120182 107 95 ci 079135 best correction presenting blindness associated older age lack schooling retinal disorders 353 cataract 283 common causes blind eyes cataract 332 refractive error 323 retinal disorders 203 main causes vision impairment 2063 20200 refractive error 768 cataract 122 main causes eyes acuity 2032 2063 conclusions vision impairment significant problem older brazilians reinforcing need implement prevention blindness programs elderly people emphasis without schooling