"Análise comparativa das medidas de espessura da camada de fibras nervosas da retina de pacientes com atrofia em banda do nervo óptico e de indivíduos normais através da tomografia de coerência óptica e da polarimetria a laser" / A comparative analysis of the retinal nerve fiber layer thickness measurements in patients with band atrophy of the optic nerve and in normal controls using optical coherence tomography and scanning laser polarimetry

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Most diseases that affect the optic pathways present clinically with loss of one or more visual functions.When optic pathway injuries involve the anterior visual pathways they may cause loss of the retinal nerve fiber layer (RNFL) and "band atrophy" (BA). The purpose of this study was therefore to compare the ability of the optical coherence tomography (OCT) 1, the OCT 3 (Stratus OCT) and the scanning laser polarimetry (GDx) to differentiate normal eyes from eyes with BA of the optic nerve and temporal hemianopsia. Thirty-seven individuals in a total of 46 eyes divided equally in two groups were studied. Each one of the parameters, except the values from the nasal quadrant measured by the GDx, showed statistically significant difference when we compare normal patients with the BA group. The study also showed a gradual improvement of the sensibilities/specificities and of the AROC, with a better performance of the OCT1 compared to GDx and of the Stratus OCT compared to the OCT 1

ASSUNTO(S)

tomografia de coerência óptica células do gânglio retiniano tomography optical coherence retina técnicas de diagnóstico oftalmológico optic atrophy/diagnosis atrofia óptica/diagnóstico diagnostic techniques ophthalmological laser/diagnostic use retinal ganglion cells laser/uso diagnóstico retina

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