Central corneal thickness, IOP readings, number of different glaucoma medications administered, the number of surgical interventions performed for the glaucomatous condition, and age of individuals for each of the investigated groups: normal subjects (controls) and patients with normal tension glaucoma (NTG), primary open angle glaucoma (POAG), pseudoexfoliation glaucoma (PEXG), or ocular hypertension (OHT). All values represent means (SD)
| Controls (n = 21) | NTG (n = 34) | POAG (n = 20) | PEXG (n = 13) | OHT (n = 12) | |
| Central corneal thickness (μm) | 524 (25) | 518 (0.5) | 515 (35) | 507 (25) | 563 (29) |
| IOP (mm Hg) | 13.9 (2.3) | 15.2 (1.9) | 18.7 (6.3) | 21.6 (6.7) | 22.8 (2.0) |
| No of different glaucoma medications administered | 0 | 0.8 (0.6) | 1.5 (1.0) | 1.4 (1.3) | 0.6 (0.7) |
| No of surgical interventions | 0 | 0.2 (0.5) | 0.4 (0.5) | 0.8 (0.8) | 0.2 (0.4) |
| Age (years) | 58.3 (24.9) | 64.2 (13) | 71.7 (13.5) | 76 (5.2) | 51.7 (11.9) |