PURPOSE: Investigate prevalence and causes of vision impairment/blindness in older adults in a low-middle income area of Sao Paulo, Brazil. METHODS: Cluster sampling, based on geographically defined census sectors, was used in randomly selecting cross-sectionally persons 50 years of age or older. Subjects were enumerated through a door-to-door survey and invited for measurement of presenting and best-corrected visual acuity and an ocular examination. The principal cause was identified for eyes with presenting visual acuity less than 20/32. RESULTS: A total of 4,224 eligible persons in 2,870 households were enumerated, and 3,678 (87.1%) examined. The prevalence of presenting visual acuity > or = 20/32 in both eyes was 61.6% (95% confidence interval [CI]: 59.4%-63.9%), and 80.4% (95% CI: 78.8%-82.1%) with best correction. The prevalence of visual impairment (< 20/63 to > or =20/200) in the better eye was 4.74% (95% CI: 3.97%-5.53%), and 2.00% (95% CI: 1.52%-2.49%) with best correction. The prevalence of presenting bilateral blindness (< 20/200) was 1.51% (95% CI: 1.20%-1.82%), and 1.07% (95% CI: 0.79%-1.35%) with best correction. Presenting blindness was associated with older age and lack of schooling. Retinal disorders (35.3%) and cataract (28.3%) were the most common causes of blind eyes. Cataract (33.2%), refractive error (32.3%), and retinal disorders (20.3%) were the main causes of vision impairment < 20/63 to > or = 20/200, with refractive error (76.8%) and cataract (12.2%) as main causes for eyes with acuity < 20/32 to > or = 20/63. CONCLUSIONS: Vision impairment is a significant problem in older Brazilians reinforcing the need to implement prevention of blindness programs for elderly people with emphasis on those without schooling.
PURPOSE: Investigate prevalence and causes of vision impairment/blindness in older adults in a low-middle income area of Sao Paulo, Brazil. METHODS: Cluster sampling, based on geographically defined census sectors, was used in randomly selecting cross-sectionally persons 50 years of age or older. Subjects were enumerated through a door-to-door survey and invited for measurement of presenting and best-corrected visual acuity and an ocular examination. The principal cause was identified for eyes with presenting visual acuity less than 20/32. RESULTS: A total of 4,224 eligible persons in 2,870 households were enumerated, and 3,678 (87.1%) examined. The prevalence of presenting visual acuity > or = 20/32 in both eyes was 61.6% (95% confidence interval [CI]: 59.4%-63.9%), and 80.4% (95% CI: 78.8%-82.1%) with best correction. The prevalence of visual impairment (< 20/63 to > or =20/200) in the better eye was 4.74% (95% CI: 3.97%-5.53%), and 2.00% (95% CI: 1.52%-2.49%) with best correction. The prevalence of presenting bilateral blindness (< 20/200) was 1.51% (95% CI: 1.20%-1.82%), and 1.07% (95% CI: 0.79%-1.35%) with best correction. Presenting blindness was associated with older age and lack of schooling. Retinal disorders (35.3%) and cataract (28.3%) were the most common causes of blind eyes. Cataract (33.2%), refractive error (32.3%), and retinal disorders (20.3%) were the main causes of vision impairment < 20/63 to > or = 20/200, with refractive error (76.8%) and cataract (12.2%) as main causes for eyes with acuity < 20/32 to > or = 20/63. CONCLUSIONS:Vision impairment is a significant problem in older Brazilians reinforcing the need to implement prevention of blindness programs for elderly people with emphasis on those without schooling.
Authors: Maria Eugenia Nano; Hugo D Nano; Jose Maria Mugica; Juan Carlos Silva; Gustavo Montaña; Hans Limburg Journal: Ophthalmic Epidemiol Date: 2006-06 Impact factor: 1.648
Authors: P K Nirmalan; R D Thulasiraj; V Maneksha; R Rahmathullah; R Ramakrishnan; A Padmavathi; S R Munoz; L B Ellwein Journal: Br J Ophthalmol Date: 2002-05 Impact factor: 4.638
Authors: Paola Pinheiro Kahwage; Mariana Paes Leme Ferriani; João M Furtado; Luciana Martins de Carvalho; Gecilmara Salviato Pileggi; Francisco Hugo Rodrigues Gomes; Maria Teresa Terreri; Claudia Saad Magalhães; Rosa Maria Rodrigues Pereira; Silvana Brasilia Sacchetti; Roberto Marini; Eloisa Bonfá; Clovis Artur Silva; Virgínia Paes Leme Ferriani Journal: Clin Rheumatol Date: 2017-01-09 Impact factor: 2.980
Authors: Solange R Salomão; Francisco S Soares; Adriana Berezovsky; Arnaud Araújo-Filho; Marcia R K H Mitsuhiro; Sung E S Watanabe; Alisson V Carvalho; Gopal P Pokharel; Rubens Belfort; Leon B Ellwein Journal: Am J Ophthalmol Date: 2009-05-05 Impact factor: 5.258
Authors: Elmar Torres; Paulo H Morales; Olimpio J N V Bittar; Nacime S Mansur; Solange R Salomão; Rubens Jr Belfort Journal: Med Hypothesis Discov Innov Ophthalmol Date: 2018
Authors: Anna Rius Ulldemolins; Van C Lansingh; Laura Guisasola Valencia; Marissa J Carter; Kristen A Eckert Journal: Indian J Ophthalmol Date: 2012 Sep-Oct Impact factor: 1.848
Authors: Gudlavalleti V S Murthy; Neena John; Bindiganavale R Shamanna; Hira B Pant Journal: Indian J Ophthalmol Date: 2012 Sep-Oct Impact factor: 1.848