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Table 4 Cylinder axis preop. vs. postop, number of cases with axis change after treatment

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

 

PreOp§

 

-0.25 (n = 41)

-0.50 (n = 84)

-0.75 (n = 38)

WTR (n = 50)

12 (24%)

26 (52%)

12 (24%)

Oblique (n = 58)

17 (29%)

30 (52%)

11 (19%)

ATR (n = 45)

8 (18%)

25 (56%)

12 (27%)

 

PostOp¶

WTR (n = 86)

20 (24%)

44 (51%)

22 (26%)

Oblique (n = 55)

13 (24%)

30 (55%)

12 (22%)

ATR (n = 12)

4 (33.3%)

7 (58.3%)

1 (8.3%)

 

Axis change‡

 

PostOp

PreOp

WTR (n = 86)

Oblique (n = 55)

ATR (n = 12)

WTR (n = 50)

27 (54%)

18 (36%)

5 (10%)

Oblique (n = 58)

33 (57%)

21 (36%)

4 (7%)

ATR (n = 45)

26 (57.8%)

16 (35.6%)

3 (6.7%)

  1. § Not significant, χ2(4) = 2.18, p = 0.704.
  2. Not significant, Fisher’s Exact Test, p = 0.756.
  3. ‡ Not significant, Fisher’s Exact Test, p = 0.976.