The purpose of the article is to investigate the effectiveness (sensitivity and specificity) of the screening test of the FDT perimetry in early diagnostic of glaucoma in mass prophylactic examinations of population and in patients with glaucoma at the ophthalmic sections of some military hospitals. Data were obtained from 700 eyes of 350 persons older than 40 years including 33 patients (53 eyes) with open angle glaucoma (OAG) which were examined at the ophthalmic sections of 5 military hospitals. The threshold test of the FDT perimetry was re-created as a computer programmer. The screening test of the FDT perimetry was made on principles of the threshold test of the FDT perimetry and is intended for mass prophylactic examinations of population especially in groups of glaucoma risk. In this investigation our version of the screening test of the FDT perimetry showed high sensitivity (94.4%) and specificity (95.3%) in early diagnostic of glaucoma.