Preop Deviation PD

Postop 1 month PD

Correction

PD

Correction

%

P value

Unilateral MD ± SD

37.74 ± 4.52

12.16 ± 12.71

25.58

67.11

<0.001

Bilateral MD ± SD

56.05 ± 5.43

11.95 ± 11.06

44.11

79.31

<0.001

Total MD ± SD

49.95 ±17.35

12.02 ± 11.52

37.93

75.24

<0.001