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Safety index is the mean postoperative BCDVA/the mean preoperative BCDVA. P < 0.05 was considered statistically significant.
| Safety index | |||
|---|---|---|---|
| Treatment group | 1 month | 3 months | 6 months |
| TPRK | 1.030 ± 0.122 | 1.039 ± 0.115 | 1.047 ± 0.116 |
| AAPRK | 0.933 ± 0.0760 | 0.990 ± 0.0622 | 1.020 ± 0.0801 |
| P value | 0.25 | 0.37 | 0.47 |
