[Correlation between the neuroretinal rim area, the C/D ratio and the retinal nerve fiber layer defect in glaucoma]. 
The neuroretinal rim area (NRA), the C/D ratio, and the retinal nerve fiber layer defects in primary open-angle glaucoma, suspected glaucoma and normal subjects were determined and studied.  The results indicated that the NRA had a higher specificity for POAG than the C/D ratio did.  Both the NRA and the C/D ratio were highly correlated with the semi-quantitative score of diffuse RNFLD, while weakly correlated with that of localized RNFLD.