Scanning laser polarimetry in glaucomatous and nonglaucomatous Brazilian subjects

Arquivos Brasileiros de Oftalmologia

Christiane Rolim De Moura¹  Paulo Augusto De Arruda Mello¹  João Antônio Prata Júnior¹ 

[1] ,Universidade Federal de São Paulo Escola Paulista de Medicina

关键词: Glaucoma;    Nerve fibers;    Retina;    Ophthalmological diagnostic technics;    Perimetry;    Glaucoma;    Fibras Nervosas;    Retina;    Técnicas de diagnóstico oftalmológico;    Perimetria;   

DOI  :  10.1590/S0004-27492003000700004

来源: SciELO

【 摘 要 】

PURPOSE: To compare the results of scanning laser polarimetry of the retinal nerve fiber layer obtained by using the GDx Scanning Laser System® in primary open angle glaucoma (POAG) and nonglaucomatous Brazilian subjects over 40 years, also analyzing the differences between the data obtained from right and left eyes. METHODS: Forty-six POAG patients and 44 normal subjects were enrolled in this study. Retardation data were assessed by the GDx Scanning Laser System®. The medians of the parameters printed in the result were compared in these two groups, separately in the right and left eyes, using Mann-Whitney's test. Also the frequencies of outside normal parameters and quadrants of deviation from normal graph were compared in these two groups, using chi-square or Fisher's exact test. RESULTS: All parameters obtained by GDx differed in a statistically significant way between the two groups, except symmetry for left eyes. The frequency of inferior quadrant with p<5% regarding deviation from normal graph was higher in the glaucomatous group. The most frequent outside normal limits parameters in the glaucomatous group were: maximal modulation, ellipse modulation, superior average and inferior average. All parameters except symmetry and superior/nasal differed between right and left eyes in the nonglaucomatous group. CONCLUSION: The parameters obtained by GDx are different in normal and glaucomatous subjects of that population. There are some parameters that deviate from normal values with a greater frequency in glaucomatous patients. An evident difference between the data of right and left eyes of normal subjects in this group was also observed.

【 授权许可】

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