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Abstract #27822 Published in IGR 13-1
Cup-to-disc ratio asymmetry in adolescents
De Campos MEJ; Garcia DM; Rodrigues MDLVArquivos Brasileiros de Oftalmologia 2010; 73: 231-234
Purpose: To determine the frequency of asymmetries greater than 0.2 in the cup-to-disc ratio of a population of adolescents. Methods: Fundus photographs of both eyes of 123 adolescents were digitized at the resolution of 300 pixels per inch (300 dpi), 8 bits, with a RBG color pattern. The measurements were performed using the Image J software, version 1.42, developed by the National Institutes of Health (NIH), Java platform version 1.6. Results: The values of the differences in the cup-to-disc ratio between the two eyes of the same individual ranged from 0 to 0.30. The mean difference was 0.07, the median 0.06 and the standard deviation 0.05. About 54.4% of the studied population had asymmetries up to 0.06 and 79.7% had asymmetries up to 0.1. Two individuals presented asymmetries of more than 0.2, corresponding to 1.63% of the evaluated subjects. Conclusion: The frequency of asymmetries in the group of adolescents studied was similar to that detected in studies of the normal adult population. LA: Portuguese, English
M.D.L.V. Rodrigues. Departamento de Oftalmologia, Otorrinolaringologia e Cirurgia de Cabeca e Pescoco, Faculdade de Medicina de Ribeirao Preto, Universida-de de Sao Paulo. Hospital das Clinicas, 12 andar-Campus USP, Ribeirao Preto (SP) CEP 14049-900, Brazil. mdlvrodr@fmrp.usp.br
Classification:
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)
6.8.2 Posterior segment (Part of: 6 Clinical examination methods > 6.8 Photography)