Pterygium in adults from the brazilian amazon region: prevalence, visual status and refractive errors
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Universidade Federal de Minas Gerais
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Artigo de periódico
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Membros da banca
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Aims To determine prevalence of pterygium, its role as main cause of unilateral and bilateral visual impairment and blindness and its impact on refractive errors from adults living in a high ultraviolet exposure area in the Brazilian Amazon Region.Methods Cluster sampling was used in randomly selecting subjects ≥45 years of age from urban and rural areas of Parintins city. Eligible subjects were enumerated through a door- to- door household survey and invited for an eye exam including refraction. Pterygium was assessed considering location (nasal, temporal or both) and size (<3 mm or ≥3 mm reaching or not pupillary margin).Results A total of 2384 persons were enumerated and 2041 (85.6%) were examined. Prevalence of pterygium was 58.8% (95% CI 53.8% to 63.7%) and associated.
with male gender (OR=1.63; 95% CI 1.37 to 1.94;
p=0.001), while higher education was a protective factor
(OR=0.63; 95% CI 0.44 to 0.92; p=0.018). Older age
and rural residence were associated with pterygium
≥3 mm reaching or not pupillary margin, while higher
education was a protective factor for pterygium ≥3 mm
reaching pupillary margin. Prevalence of pterygium as
cause of visual impairment and blindness was 14.3%
and 3.9%, respectively. Significantly higher hyperopic
refractive errors were found in eyes with pterygium
≥3 mm reaching or not pupillary margin.
Conclusions Pterygium was highly prevalent and
the second cause of visual impairment and blindness
after provision of refractive correction. Risk factors for
pterygium were male gender, advanced age, lower
education and rural residency. Strategies to provide
pterygium early detection and proper management
should be considered by healthcare authorities in this
population
Abstract
Assunto
Pterígio, Transtornos da Visão, Brasil
Palavras-chave
Pterygium, Brazil, Vision Disorders
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Endereço externo
https://bjo.bmj.com/content/104/6/757