[Clinical correlation between structural and functional assessment in glaucoma: Armaly cup to disk ratio and Brusini glaucoma staging system].
OBJECTIVE
To evaluate the correlation between Armaly's structural systems with Brusini's functional staging in glaucomatous patients.


METHODS
Seventy-eight eyes of forty-two patients with primary open-angle glaucoma underwent visual field testing with the Humphrey Field Analyzer II (program SITA 24-2) and optic disc evaluation with the 78D Volk lens by two independent observers. Optic disc was stratified according to cup/disc ratio (C/D), from 0.1 to 1.0. Mean deviation (MD) and pattern standard deviation (PSD) values from each eye were plotted on Brusini's staging system to derive a value for glaucoma severity. Both cup/disc ratio and Brusini's values were plotted on a diagram to assess correlation (Spearman's rho correlation coefficient). Armaly's values were logged in a logarithmic figure and the data plotted on a diagram with Brusini's values for each patient.


RESULTS
Armaly's and Brusini's systems dysplayed a poor correlation (rho=0.340). Both unlogged and logged, Armaly's versus Brusini's plots resulted in a linear and weak correlation.


CONCLUSIONS
Despite the weak correlation, Armaly's structural system and Brusini's staging system provided non-independent measures for glaucoma evaluation.
Oliveira
Adriana Chaves de
AC
Setor de Glaucoma da Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, Brasil. drychaves@ig.com.br
Oliveira
Flávia Chaves de
FC
Villa Albers
Marcos Bottene
MB
Cohen
Ralph
R
Kasahara
Niro
N
D003430:Cross-Sectional Studies; D003627:Data Interpretation, Statistical; D005260:Female; D005902:Glaucoma, Open-Angle / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000473:pathology; D058609:Visual Field Tests / Q000379:methods*; D014794:Visual Fields / Q000502:physiology