Table 5 Coma, spherical aberration, and trefoil in both groups

  Range

)-0.043–0.977)

)-0.174–1.5)

  Mean ± SD

0.20 ± 0.20

0.23 ± 0.28

  Range

(0.004–0.811)

(0.016–0.39)

  Mean ± SD

0.10 ± 0.13

0.090 ± 0.089

  p₂ value

0.0023*

0.0004*

  Range

)-0.174–0.475)

(−0.788–0.475)

  Mean ± SD

0.06 ± 0.13

0.08 ± 0.17

  Range

)-0.025–0.245)

(0.003–0.022)

  Mean ± SD

0.03 ± 0.05

0.011 ± 0.006

  p₂ value

0.080

0.005*

  Range

)0.011–1.4)

(0.06–1.4)

  Mean ± SD

0.19 ± 0.22

0.19 ± 0.24

  Range

)0.001–0.977)

(0.003–0.031)

  Mean ± SD

0.17 ± 0.23

0.027 ± 0.006

  p₂ value

0.2302

0.001*