Exámenes estructurales y funcionales en el glaucoma avanzado

Abstract

Purpose: To determine the correlation between structural and functional examinations in patients with advanced

glaucoma.Method: Quantitative, observational, cross-sectional study in 169 glaucoma patients, divided into two groups: moderate and advanced. The relationship between a structural examination (Spectralis optical coherence tomography: OCT) with a functional one (Octopus visual field: CV) was measured in both groups, using Pearson’s correlation coefficient. The analysis was carried out with the SPSS version 20.0 program. Results: The mean deviation in CV was 8.68 ± 1.54 decibels in moderate glaucoma, and 17.57 ± 4.55 decibels in advanced; the mean nerve fiber layer (CFN) loss in OCT was 94.69 ± 20.10 microns and 69.08 ± 21.62 microns in moderate and advanced glaucoma, respectively. There is a correlation r = -0.493 (p <0.05) between OCT and CV in moderate glaucoma; but in advanced glaucoma there is no correlation r = -0.143 (p = 1.46), except between the nasal quadrants of the CV with the temporal quadrants of the OCT r = -0.219 (p <0.05) Conclusions: In advanced glaucoma there is no correlation between the mean deviation of the CV defect and the mean CFN (OCT). In these patients, it is recommended to be guided by the results of the CV. However, the CFN in the temporal sectors does correlate with the equivalent defect of the CV and can be very useful for its diagnosis and follow-up.