摘要： Introduction. To evaluate the sectorial thickness of single retinal layers and optic nerve using spectral domain optic coherence tomography (SD-OCT) and highlight the parameters with the best diagnostic accuracy in distinguishing between normal and glaucoma subjects at di?erent stages of the disease. Material and Methods. For this cross-sectional study, 25 glaucomatous (49 eyes) and 18 age-matched healthy subjects (35 eyes) underwent a complete ophthalmologic examination including visual ?eld testing. Sectorial thickness values of each retinal layer and of the optic nerve were measured using SD-OCT Glaucoma Module Premium Edition (GMPE) software. Each parameter was compared between the groups, and the layers and sectors with the best area under the receiver operating characteristic curve (AUC) were identi?ed. Correlation of visual ?eld index with the most relevant structural parameters was also evaluated. Results and Discussion. All subjects were grouped according to stage as follows: Controls (CTRL); Early Stage Group (EG) (Stage 1 + Stage 2); Advanced Stage Group (AG) (Stage 3 + Stage 4 + Stage 5). mGCL TI, mGCL TO, mIPL TO, mean mGCL, cpRNFLt NS, and cpRNFLt TI showed the best results in terms of AUC according classi?cation proposed by Swets (0.9 < AUC < 1.0). These parameters also showed signi?cantly di?erent values among group when CTRL vs EG, CTRL vs AG, and EG vs AG were compared. SD-OCT examination showed signi?cant sectorial thickness di?erences in most of the macular layers when glaucomatous patients at di?erent stages of the disease were compared each other and to the controls.