Purpose: Quantitative evaluation of the retinal nerve fiber layer (RNFL) might improve the ability to detect longitudinal glau-comatous changes. Methods: 199 eyes qualified for this study, each having no less than 3 consecutive reliable visual field (VF) tests and 3 consecutive optical coherence tomography (OCT) scans during the same time period. Clinical ophthalmic exami- Purpose: Quantitative evaluation of the retinal nerve fiber layer (RNFL) might improve the ability to detect longitudinal glau-comatous changes. Methods: 199 eyes qualified for this study, each with no less than 3 consecutive reliable visual field (VF) tests and 3 consecutive optical coherence tomography (OCT) scans during the same time period. Clinical ophthalmic exami-