| Group | Lin Tor+US | Fixed Tor | US | F* | p Value | |||
| Corneal thickness | Change, % | Corneal thickness | Change, % | Corneal thickness | Change, % | |||
| Preop (SD) | 531 (21) | 535 (26) | 539 (34) | 0.194 | 0.824 | |||
| 1 day (SD) | 617 (48) | 96 (8), 18.1 | 621 (54) | 96 (11), 17.9 | 633 (60) | 104 (12), 19.3 | 47.362 | <0.0001 |
| 7 days (SD) | 565 (25) | 44 (10), 8.3 | 568 (32) | 43 (10), 8.03 | 587 (38) | 58 (10), 10.7 | 57.718 | <0.0001 |
| 30 days (SD) | 534 (22) | 6 (5), 1.1 | 535 (26) | −6 (5), −1.1 | 532 (20) | −7 (4), −1.3 | 0.345 | 0.732 |
*One-way ANOVA.
Fixed Tor, Fixed high Torsional amplitude group; Lin Tor+US, Linear Torsional combined with Ultrasound energy; US, Ultrasound mode.