Purpose. To study the role of optical coherence tomography (OCT) and OCT angiography (OCTA) in the detection of the primary glaucoma progression. Material and methods. The prospective study of 128 patients with primary glaucoma (128 eyes), conducted from 2015 to 2019, included at least 6 standard automated perimetry (SAP) and spectral-domain OCT (SD-OCT) examinations in each patient; OCTA was also used during the last year of observation. To determine the disease progression, the trend and event analysis using the Humphrey Field Analyzer was performed. The fact and rate of thinning of the retinal nerve fiber layer (RNFL) and its ganglion cell complex (GCC) were evaluated. If they had a trend of significant (p < 0.05) thinning, the eye was classified as having the SD-OCT progression. The values of corneal-compensated IOP were also considered: minimal (IOPmin) and peak (IOPmax). Results. Glaucoma progression was detected in 79 eyes. The isolated use of SAP allows detecting the progression only in 2.3% cases, SD-OCT - in 37.5%, among them the isolated assessment of GCC amounted to 7.8%, and RNFL – to 5.5%. The complex dynamic morphological and functional assessment increased the possibility of progression detection up to 61.7%. Progression was related to the stage of glaucoma damage at the moment of diagnosis: for the perimetry index PSD p=0.025, for the focal loss volume of GCC p=0.024, as well as with the level of minimal IOP (p=0.04). All patients with progression have shown the vessel density decrease in the peripapillary retina and parafovea. Conclusion. SD-OCT plays an important role in detecting the progression of glaucoma. The complex dynamic morphological and functional assessment allows detecting the progression in over half of patients. Progression is associated with the initial stage of glaucoma and an insufficient IOP decrease during treatment, accompanied by retinal microcirculation deterioration. Key words: primary, glaucoma progression, optical coherence tomography, OCT-angiography, IOP.