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The purpose of this study was to determine the significance of the correlations between blood flow on the optic nerve head (ONH) using the mean blur rate (MBR) determined by laser speckle flowgraphy and the visual field loss determined by perimetry and the structural alterations by optical coherence tomography in eyes solely with open-angle glaucoma. There were significant differences in the circumpapillary retinal nerve fiber layer thickness (cpRNFLT), and the MBR-tissue, at the different stages of glaucoma (ANOVA,  P  < 0.001). Univariate linear regression analyses indicated that the mean deviations (MD) were significantly correlated with both the MBR-tissue (r = 0.661,  P  < 0.001) and the cpRNFLT (r = 0.279,  P  = 0.005). Logistic regression analyses showed that the MD was significantly correlated with the MBR-tissue ( P  < 0.001) and the cpRNFLT ( P  < 0.001). The MBR-tissue was found to be the factor that can best predict the MD based on the Akaike information criteria ( P  < 0.001). Stepwise multiple logistic regression analyses showed that the MBR-tissue and the cpRNFLT were both risk factors that were significantly associated with the MD (Odds ratio;1.25 and 1.07,  P  < 0.001 and  P  < 0.001, respectively). These results indicate that the MBR-tissue was as important as the structural values in diagnosing and determining the prognosis of glaucoma.

Correlation between blood flow on optic nerve head and structural and functional changes in eyes with glaucoma