Table 3: The comparison of annually changes in mean CCT among PG analogs.
| Latanoprost (n = 27) | Bimatoprost (n = 24) | Travoprost (n = 22) | p value* | |
| Age ± SD (year) | 65.5 ± 9.2 | 68.5 ± 7.1 | 68.1 ± 4.3 | 0.289 |
| Baseline mean CCT ± SD (µm) | 559.3 ± 35.9 | 548.8 ± 36.1 | 549.6 ± 28.0 | 0.471 |
| 1st year mean CCT ± SD (µm) | 550.4 ± 34.4 | 536.2 ± 30.8 | 533.6 ± 30.2 | 0.142 |
| 2nd year mean CCT ± SD (µm) | 545.4 ± 33.9 | 527.1 ± 32.9 | 526.9 ± 24.5 | 0.058 |
| 3rd year mean CCT ± SD (µm) | 541.8 ± 31.0 | 524.3 ± 33.9 | 524.4 ± 26.1 | 0.058 |
| 4th year mean CCT ± SD (µm) | 540.3 ± 32.5 | 517.1 ± 29.3 | 519.4 ± 29.5 | 0.020 |
| 5th year mean CCT ± SD (µm) | 536.0 ± 32.5 | 515.3 ± 30.3 | 517.4 ± 27.3 | 0.032 |
| ΔCCT (µm) | 23.3 ± 14.5 | 33.4 ± 14.6 | 32.2 ± 10.2 | 0.016 |
| p value** | < 0.001 | < 0.001 | < 0.001 |
*ANOVA test; **Repeated measure test.
SD: Standard Deviation; CCT: Central Corneal Thickness; Δ: Change of value from baseline.