Author | Procedure | N | Mean cylinder (D) | Efficacy index | Safety index | Predictability | Correction index | Difference vector | Magnitude of error | Angle of error b | Follow up |
---|---|---|---|---|---|---|---|---|---|---|---|
Pedersen [20] | SMILE | 101 | −1.81 | NA; 49% of eyes postop UDVA ≥ preop CDVA | NA; 9% lost one line in CDVA | 70% of eyes within ±0.5 D of refractive cylinder | 0.94 | 0.31 | 0.12 | 0.34 | 12 months |
Chan [23]a | SMILE | 54 | −1.08 | 0.85; 76% achieved a UDVA of 20/25 | 0.97; 7.4% lost one line in CDVA | 87% of eyes within ±0.5 D of refractive cylinder | 0.858a | 0.349a | −0.225a | 6.38a | 3 months |
Chan [23]a | f-LASIK | 57 | −1.37 | 0.94; 95% achieved a UDVA of 20/25 | 0.98; 5.3% lost one line in CDVA | 98.2% of eyes within ±0.5 D of refractive cylinder | 1.020a | 0.090a | 0.037a | −0.72a | 3 months |
Zhang [24] | SMILE | 42 | −2.48 | 93% UDVA ≥20/25 | 0% lost CDVA lines | Mean postop refractive cylinder of −0.38 ± 0.42 D | 0.88 | 0.36 | −0.31 | 1.22 | 3 months |
Zhang [24] | f-LASIK | 22 | −2.56 | 91% UDVA ≥20/25 | 0% lost CDVA lines | Mean postop refractive cylinder of −0.42 ± 0.45 D | 0.94 | 0.42 | −0.23 | −1 | 3 months |
Ganesh [27] | SMILE | 81 | −1.85 | NA; 61% of eyes postop UDVA ≥ preop CDVA | NA; 0% lost one line in CDVA | 86% of eyes within ±0.5 D of refractive cylinder | 0.95 | 0.33 | −0.108 | 4.09 (absolute AE) | 3 months |
Qian [30]c | SMILE | 28 (25) | −1.35 (−2.50) | NA | NA | Mean postop refractive cylinder of −0.42 (−0.48) D | 0.94 (0.94) | NA | NA | NA | 6 months |
Qian [30]c | LASEK | 17 (14) | −1.27 (−2.55) | NA | NA | Mean postop refractive cylinder of −0.27 (−0.89) D | 0.97 (0.77) | NA | NA | NA | 6 months |