Table 1.
Descriptive Statistics of Eye Parameters
| Variable | Timepoint | LI_fs | VT | n |
|---|---|---|---|---|
| Spherical power | Pre surgery | −3.53 ± 2.49 | −3.24 ± 6.31 | 9/22 |
| Post surgery | −5.64 ± 3.61 | −4.43 ± 5.73 | 16/53 | |
| ∆ post - pre | −1.5 ± 2.26 | 1.22 ± 6.69 | 4/15 | |
| Cylindrical power | Pre surgery | 4.67 ± 3.09 | 2.41 ± 2.64 | 9/22 |
| Post surgery | 4.98 ± 2.87 | 4.31 ± 2.67 | 16/53 | |
| ∆ post - pre | 0.94 ± 4.92 | 0.23 ± 3.58 | 4/15 | |
| K1 | Pre surgery | 51 ± 10.7 | 49 ± 10.5 | 24/77 |
| Post surgery | 42 ± 3.1 | 41.5 ± 4.1 | 24/91 | |
| ∆ post - pre | −9.5 ± 10.8 | −6.9 ± 9.9 | 21/76 | |
| K2 | Pre surgery | 56.3 ± 11.4 | 54.8 ± 11.2 | 24/77 |
| Post surgery | 48.7 ± 3.5 | 48.2 ± 4.5 | 24/91 | |
| ∆ post - pre | −7.7 ± 11.3 | −6.3 ± 11.8 | 21/76 | |
| Astigmatism | Pre surgery | 5.4 ± 3.4 | 5.8 ± 4.8 | 24/77 |
| Post surgery | 6.7 ± 4.2 | 6.7 ± 3.8 | 24/91 | |
| ∆ post - pre | 1.8 ± 5.5 | 0.6 ± 6.2 | 21/76 | |
| VA | Pre surgery | 0.23 ± 0.25 | 0.11 ± 0.15 | 19/50 |
| Post surgery | 0.43 ± 0.27 | 0.42 ± 0.24 | 17/61 | |
| ∆ post - pre | 0.16 ± 0.41 | 0.25 ± 0.27 | 11/34 |
Notes: Metric variables are summarized as mean ± standard deviation. (n) refers to the number of observations in the LI-fs/ VT-group. (Δ=Delta) represents the change or difference between two measurements/values.
Abbreviations: LI-fs, liquid-interface femtosecond laser, VT, vacuum-trephine; VA, visual acuity.