One-Year Visual and Refractive Outcomes following LASIK for Myopia and Myopic Astigmatism with MEL 90 versus Schwind Amaris 750S Excimer Laser: A Comparative Study

Table 4

Subgroup analysis of high-astigmatism eyes (1 D and above).

Parameter (mean ± SD) (range)	Schwind Amaris 750S (n = 38)	MEL 90 (n = 25)	value
Preop cylinder	−2.34 ± 1.18 (−1.25 to −6.00)	−1.99 ± 0.75 (−1.25 to −3.50)	0.13
Postop cylinder	−0.25 ± 0.19 (0 to −0.75)	−0.39 ± 0.24 (0 to −1.00)	0.01
TIA	2.15 ± 1.33 (0.46 to 5.58)	1.73 ± 0.75 (0.43 to 3.16)	0.11
SIA	2.07 ± 1.11 (0.44 to 5.16)	1.60 ± 0.87 (0.28 to 3.79)	0.08
AOE-absolute	3.71 ± 4.27 (0 to 16)	3.20 ± 4.66 (0 to 15)	0.66
AOE-arithmetic	−0.5 ± 5.66 (−16 to 15)	0.875 ± 5.62 (−10 to 15)	0.35
CI	0.96 ± 0.23 (0 to 1.77)	0.92 ± 0.24 (0.23 to 1.32)	0.48

^∗Independent t-test