Prevalence of refractive errors in students in ... - Semantic Scholar
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Prevalence of refractive errors in students in ... - Semantic Scholar
Prevalence of refractive errors in students in Northeastern Brazil Prevalência dos erros refrativos em estudantes do Nordeste Brasileiro
Carlos Alexandre de Amorim Garcia1 Fernando Oréfice2 Gabrielle Fernandes Dutra Nobre3 Dilene de Brito Souza4 Marta Liliane Ramalho Rocha5 Raul Navarro Garrido Vianna6
ABSTRACT
Purpose: To determine the prevalence of refractive errors in the public and private school system in the city of Natal, Northeastern Brazil. Methods: Refractometry was performed on both eyes of 1,024 randomly selected students, enrolled in the 2001 school year and the data were evaluated by the SPSS Data Editor 10.0. Ametropia was divided into: 1- from 0.1 to 0.99 diopter (D); 2- 1.0 to 2.99D; 3- 3.00 to 5.99D and 4- 6D or greater. Astigmatism was regrouped in: I- with-the-rule (axis from 0 to 30 and 150 to 180 degrees), II- against-the-rule (axis between 60 and 120 degrees) and III- oblique (axis between > 30 and < 60 and >120 and 30 and 120 and 30 e 120 e
