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Table 2 Efficacy (EI) and safety (SI), displayed by preoperative astigmatic cylinder magnitude

From: Laser in situ keratomileusis for astigmatism ≤ 0.75 Diopter combined with low myopia: a retrospective data analysis

Cylinder (D)

-0,25

-0,5

-0,75

p-Value**

Total

N total (Eyes/Patients)

37

81

35

-

153

EI total*

0.93(0.68-1)

0.75(0.67-0.94)

0.8(0.67-1)

0,211

0.78(0.67-0.92)

SI total*

1(1–1.08)

1(0.92-1.09)

1.05(0.9-1.2)

0,659

1(0.94-1.11)

N (Eyes/Patients)400Hz

9

15

6

-

30

EI 400Hz*

0.82(0.65-0.94)

0.89(0.78-1)

0.83(0.73-0.98)

-

0.81(0.67-0.93)

SI 400Hz*

0.91(0.83-1.03)

1.04(1–1.1)

1.04(0.99-1.22)

-

1(0.9-1.07)

N (Eyes/Patients)200Hz

28

66

29

-

123

EI 200Hz*

0.93(0.73-1)

0.75(0.67-0.94)

0.8(0.65-1)

-

0.76(0.66-1)

SI 200Hz*

1(1–1.08)

1(0.92-1.09)

1.05(0.9-1.2)

-

1(0.92-1.1)

  1. * Median(Q25-Q75) Q25 = 25th quartile; Q75 = 75th quartile.
  2. **Tested with Kruskal-Wallis Test.