Prevalência de astigmatismo refracional e sua relação com a acuidade visual de resolução em crianças de 2 a 36 meses

• Autor(a) principal: Lipener, César [UNIFESP]
• Data de Publicação: 2006
• Outros Autores: Munoz, Emilio de Haro [UNIFESP], Moreira, José Belmiro de Castro [UNIFESP], Berezovsky, Adriana [UNIFESP], Salomão, Solange Rios [UNIFESP], Ventura, Dora Fix
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: http://dx.doi.org/10.1590/S0004-27492006000300015; http://repositorio.unifesp.br/handle/11600/3097
• topic: Astigmatism; Prevalence; Visual acuity; Child; Astigmatismo; Prevalência; Acuidade visual; Criança

PURPOSE: To evaluate refractional astigmatism prevalence and its relationship with grating acuity in a cohort of non-verbal children. METHODS: 482 normal children, aged from 2 to 36 months, were submitted to ophthalmological examination. Fourteen subjects were excluded due to ocular disease and the sample remained with 468 subjects (936 eyes); 230 (49%) males e 238 (51%) females. Grating acuity was assessed binocularly and monocularly with Teller acuity cards. All children underwent eye examination including cycloplegic retinoscopy and fundus by indirect ophthalmoscopy. RESULTS: Astigmatism was found in 222 (47.43%) of the children, with the hyperopic and with the rule types most frequently found in all ages. Concerning magnitude, this condition was equal or greater than 1.00 cylindric diopter in 24.35% of the children; equal or greater than 2.00 cylindric diopter in 5.55%; lower than 1.00 in 26.92% and between 1.00 and 2.00 in 18.73%. Grating acuity was normal in 219 of the subjects, despite magnitude, type and orientation of astigmatism. CONCLUSION: Visual acuity assessed by the acuity card procedure was not influenced by astigmatism.