assimetria na relação escavação/disco óptico em adolescentes cup-to-disc ratio asymmetry in adolescents

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ID: 236349
2010
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Abstract
Objetivo: Verificar a frequência de assimetrias superiores a 0,2 na razão escavação/disco em uma população de adolescentes. Métodos: Retinografias de ambos os olhos de 123 jovens foram digitalizadas na resolução de 300 pixels por polegada (300 dpi), 8 bits, padrão de cor RGB. Para a realização das medidas foi utilizado o software Image J, versão 1.42, desenvolvido pelo National Institute of Health (NIH), plataforma Java versão 1.6. Resultados: Os valores das diferenças, entre os dois olhos do mesmo indivíduo, na razão das medidas do diâmetro vertical da escavação/diâmetro vertical do disco óptico variaram de 0 a 0,30. A média das diferenças foi 0,07, a mediana 0,06 e o desvio padrão 0,05. Assimetrias de até 0,06 apresentaram frequência de 54,4% e assimetrias de até 0,1 estiveram presentes em 79,7% da amostra. Dois indivíduos (1,63%) apresentaram assimetrias superiores a 0,2. Conclusão: A frequência de assimetrias no grupo de adolescentes estudado é similar à encontrada em estudos realizados com população adulta normal.
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.
Reference Key
campos2010arquivosassimetria Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Maria Elizabete Jimenes de Campos;Denny Marcos Garcia;Maria de Lourdes Veronese Rodrigues
Journal introducing innodb cluster: learning the mysql high availability stack
Year 2010
DOI
10.1590/S0004-27492010000300004
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492010000300004
Keywords
retina glaucoma photography adolescentes visual fields fundus oculi optic disc fotografia adolescentsophthalmology

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