September 2016
Volume 57, Issue 12
Open Access
ARVO Annual Meeting Abstract  |   September 2016
Prevalence and Outcomes of Cataract Surgery: the Brazilian Amazon Region Eye Survey (BARES)
Author Affiliations & Notes
  • Adriana Berezovsky
    Oftalmologia e Ciencias Visuais, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
  • Sung Eun Song Watanabe
    Oftalmologia e Ciencias Visuais, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
  • Sergio Munoz
    Salud Publica, Universidad de La Frontera, Temuco, Chile
  • Joao M Furtado
    Oftalmologia e Ciencias Visuais, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
    Oftalmologia, Otorrinolaringologia e Cirurgia de Cabeca e Pescoco, Faculdade de Medicina de Ribeirao Preto, USP, Ribeirao Preto, Brazil
  • Marcos Jacob Cohen
    Divisao de Oftalmologia, Depto. de Cirurgia, Universidade Federal do Amazonas, Manaus, Brazil
    Instituto de Olhos de Manaus, Manaus, Brazil
  • Paulo Henrique Morales
    Oftalmologia e Ciencias Visuais, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
  • Marcela Cypel
    Oftalmologia e Ciencias Visuais, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
  • Jacob Moyses Cohen
    Divisao de Oftalmologia, Depto. de Cirurgia, Universidade Federal do Amazonas, Manaus, Brazil
    Instituto de Olhos de Manaus, Manaus, Brazil
  • Rubens Belfort
    Oftalmologia e Ciencias Visuais, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
  • Solange Rios Salomao
    Oftalmologia e Ciencias Visuais, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
  • Footnotes
    Commercial Relationships   Adriana Berezovsky, None; Sung Watanabe, None; Sergio Munoz, None; Joao Furtado, None; Marcos Cohen, None; Paulo Henrique Morales, None; Marcela Cypel, None; Jacob Cohen, None; Rubens Belfort, None; Solange Salomao, None
  • Footnotes
    Support  Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq, Brasília, Brasil, Programa Ciência sem Fronteiras (Grant # 402120/2012-4 to SRS, SM and JMF; Research Scholarships to SRS and RBJ); Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP, São Paulo, Brasil (Grant # 2013/16397-7 to SRS); Sight First Program – Lions Club International Foundation (Grant # 1758 to SRS).
Investigative Ophthalmology & Visual Science September 2016, Vol.57, 1997. doi:
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    • Get Citation

      Adriana Berezovsky, Sung Eun Song Watanabe, Sergio Munoz, Joao M Furtado, Marcos Jacob Cohen, Paulo Henrique Morales, Marcela Cypel, Jacob Moyses Cohen, Rubens Belfort, Solange Rios Salomao; Prevalence and Outcomes of Cataract Surgery: the Brazilian Amazon Region Eye Survey (BARES). Invest. Ophthalmol. Vis. Sci. 2016;57(12):1997.

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      © 2017 Association for Research in Vision and Ophthalmology.

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Abstract

Purpose : To investigate the prevalence and visual acuity (VA) outcomes of cataract surgery in Parintins city, Brazilian Amazon Region.

Methods : Cluster sampling based on geographically-defined census sectors was used in randomly selecting individuals ≥45 years of age for visual acuity measurement, refraction, slit-lamp examination and fundoscopy during 2014-2015. Participants were queried as to the year and place of previous cataract surgery. The surgical procedure and any evidence of surgical complications were recorded during the examination. The principal cause of visual impairment/blindness was identified for eyes presenting with VA <20/32.

Results : A total of 2383 eligible persons were enumerated and 2042 (85.7%) were examined. A group of 176 persons had been operated on for cataract in one or both eyes (133 from urban areas and 43 from rural areas), representing a cataract surgery prevalence of 8.62% [95% C.I:7.44-9.93] and a total of 275 eyes: 99 both eyes (79 urban and 20 rural) and 77 one eye (54 urban and 23 rural). Cataract surgery prevalence for urban areas was 11.27% [95% C.I.: 9.52-13.22] and for rural areas was 4.99% [95% C.I.: 3.64-6.67]. Surgical coverage among those with presenting visual impairment or blindness ≤20/40 in both eyes because of cataract was 31.8%. Higher schooling and urban area of residence were significantly associated with higher surgical coverage (p<0.01). Among 275 cataract-operated eyes, 43.3% presented with VA >20/40, 16.7% with VA 20/40 to 20/63, 19.3% with VA <20/63 to 20/200, and 20.7% with VA <20/200. With best-correction, the corresponding percentages were 59.3%, 10.0%, 13.3%, and 17.4%. Intra-ocular lenses were found in 92.3% of cataract-operated eyes, and 171 (62.2%) eyes had phacoemulsification. Next to refractive error, age-related macular degeneration and posterior capsule opacity were the main causes of vision impairment/blindness in operated eyes.

Conclusions : The volume of cataract surgery in rural areas of Parintins city is low, with many remaining visually impaired/blind because of cataract. Refractive error and other causes of visual impairment amenable to treatment are common in cataract-operated eyes from both urban and rural areas. Greater emphasis on the quality of visual acuity outcomes along with sustained government subsidy to provide access to cataract surgery is needed.

This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.

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