Table 3 Visual acuities, refractive errors, efficacy index, and safety index
Preoperative | 1 month after FTAK | 1 month after SMILE | 6 months after SMILE | 12 months after SMILE | 24 months after SMILE | p value | |
|---|---|---|---|---|---|---|---|
LogMAR UDVA | 1.54 ± 5.53 (0.8 to 2.0) | 1.58 ± 0.47 (0.5 to 2.00) | 0.001 ± 0.07 (− 0.1 to 0.1) | −0.03 ± 0.06 (− 0.2 to 0.1) | −0.03 ± 0.07 (− 0.2 to 0.1) | −0.02 ± 0.09 (− 0.2 to 0.1) | 0.082 |
LogMAR CDVA | −0.03 ± 0.07 (− 0.2 to 0.2) | −0.04 ± 0.05 (− 0.2 to 0.2) | −0.05 ± 0.08 (− 0.2 to 0.1) | −0.07 ± 0.07 (− 0.2 to 0.1) | −0.06 ± 0.07 (− 0.2 to 0.1) | −0.07 ± 0.08 (− 0.2 to 0.1) | 0.272 |
Sphere (D) | − 3.82 ± 2.56 (− 7.75 to + 2.25) | −5.37 ± 2.60 (− 9.25 to − 0.25) | −0.08 ± 0.30 (− 0.75 to 0.75) | −0.12 ± 0.37 (− 1.5 to 0.75) | −0.14 ± 0.35 (− 1.0 to 0.5) | −0.19 ± 0.41 (− 1.5 to 0.5) | 0.382 |
Cylinder (D) | −5.48 ± 1.17 (− 9.0 to − 4.0) | − 2.27 ± 0.97 (− 4.25 to − 0.25) | −0.36 ± 0.28 (− 1.0 to 0) | −0.33 ± 0.26 (− 1.0 to 0) | −0.34 ± 0.29 (− 1.25 to 0) | −0.34 ± 0.26 (− 1.0 to 0) | 0.946 |
SE (D) | −6.56 ± 2.38 (− 10.875 to − 0.75) | −6.52 ± 2.40 (− 10.375 to − 0.875) | −0.27 ± 0.33 (− 0.875 to 0.375) | −0.29 ± 0.38 (− 1.625 to 0.625) | −0.31 ± 0.34 (− 1.125 to 0.25) | −0.36 ± 0.42 (− 1.625 to 0.25) | 0.441 |
Efficacy index | – | 0.05 ± 0.08 (0.01 to 0.5) | 0.94 ± 0.16 (0.58 to 1.43) | 1.00 ± 0.19 (0.67 to 1.71) | 1.01 ± 0.17 (0.67 to 1.5) | 1.01 ± 0.24 (0.56 to 1.71) | 0.130 |
Safety index | – | 1.02 ± 0.10 (0.83 to 1.6) | 1.06 ± 0.21 (0.58 to 1.71) | 1.10 ± 0.17 (0.83 to 1.71) | 1.09 ± 0.16 (0.83 to 1.43) | 1.10 ± 0.17 (0.83 to 1.71) | 0.292 |