Comparison of intraoperative parameters between groups
| Laser group (n=3289) | Manual group (n=2130) | |||||
| Subgroup A (n=250) | Subgroup B (n=250) | Subgroup C (n=250) | Subgroup D (n=2539) | Total laser group (n=3289) | ||
| Mean ultrasonic power (%) ± SD | 15.55±6.84*** | 12.02±5.71 | 11.51±5.44 | 11.74±5.74 | 12.03±5.89### | 16.17±6.13 |
| Mean APT (s)±SD | 42.88±26.82*** | 35.81±23.03 | 32.99±20.96 | 34.24±21.88 | 34.92±22.43### | 45.62±26.62 |
| Mean EPT (s)±SD | 7.20±5.49*** | 4.74±3.67 | 4.33±3.21 | 4.45±3.41 | 4.69±3.69### | 8.07±6.53 |
***p<0.001, versus subgroup D.
###p<0.001, versus manual group.
APT, absolute phacoemulsification time; EPT, effective phacoemulsification time.