Subgroup analysis of astigmatic correction based on the degree of target-induced astigmatism at 3 months after small-incision lenticule extraction (SMILE) and femtosecond-assisted laser in situ keratomileusis (LASIK)
| SMILE | LASIK | p Value* | |
|---|---|---|---|
| TIA | n=33/21 | n=31/26 | |
| Low TIA | 0.547±0.198 | 0.603±0.259 | 0.332 |
| Moderate TIA | 1.586±0.481 | 1.888±0.744 | 0.115 |
| SIA | |||
| Low TIA | 0.586±0.247 | 0.631±0.249 | 0.465 |
| Moderate TIA | 1.361±0.582 | 1.926±0.806 | 0.010 |
| DV | |||
| Low TIA | 0.173±0.234 | 0.040±0.093 | 0.005 |
| Moderate TIA | 0.349±0.391 | 0.090±0.175 | 0.004 |
| ME | |||
| Low TIA | 0.039±0.196 | 0.028±0.072 | 0.776 |
| Moderate TIA | −0.225±0.350 | 0.037±0.162 | 0.001 |
| AE | |||
| Low TIA | −2.54±37.13 | 5.01±28.29 | 0.366 |
| Moderate TIA | 6.38±23.10 | −0.72±6.02 | 0.138 |
| Absolute AE | |||
| Low TIA | 26.04±26.20 | 19.52±20.80 | 0.277 |
| Moderate TIA | 15.44±18.05 | 3.58±4.84 | 0.002 |
*Comparison between SMILE and LASIK. p<0.05=statistically significant.
AE, angle of error; DV, difference vector; ME, magnitude of error; SIA, surgically induced astigmatism; TIA, target-induced astigmatism.