Table 1: Preoperative characteristics of two groups.
| p* | |||||
| Mean ± SD | Range | Mean ± SD | Range | ||
| Number of eyes | 311 | 341 | -- | ||
| Age (years) | 35 ± 8.5 | 20-60 | 35 ± 8.6 | 21-62 | 0.41 |
| Male/female ratio | 162/149 (52.1%) | 187/154 (54.8%) | > 0.05 | ||
| Spherical equivalent (D) | -3.71 ± 2.68 | -9.75 to -1.50 | -3.40 ± 2.56 | -9.88 to -1.25 | > 0.05 |
| Cylinder (D) | -0.99 | -5.00 to 0.00 | -1.07 | -6.00 to -0.50 | > 0.05 |
*Analyzed by Student t test.