Table 2: The comparison of annually changes in mean CCT between groups.
| Control group (n = 75) | Glaucoma group (n = 73) | p value* | |
| Baseline mean CCT ± SD (µm) | 550.2 ± 28.2 | 552.9 ± 33.7 | 0.593 |
| 1st year mean CCT ± SD (µm) | 549.9 ± 28.2 | 540.7 ± 32.5 | 0.064 |
| 2nd year mean CCT ± SD (µm) | 550.1 ± 28.0 | 533.8 ± 31.8 | 0.001 |
| 3rd year mean CCT ± SD (µm) | 549.9 ± 28.1 | 530.8 ± 31.4 | < 0.001 |
| 4th year mean CCT ± SD (µm) | 550.0 ± 28.1 | 526.4 ± 33.2 | < 0.001 |
| 5th year mean CCT ± SD (µm) | 550.1 ± 28.2 | 523.6 ± 31.4 | < 0.001 |
| p value** | 0.276 | < 0.001 |
*Independent sample test; **Repeated measure test.
SD: Standard Deviation; CCT: Central Corneal Thickness.