Table 2 Preoperative and postoperative corneal densitometric values in patients enrolled in the study

Anterior

0–2

20.4 [19.6,21.2]

25.4 [24.1,26.1]

23.0 [22.2,23.3]

21.9 [21.4,22.2]

20.9 [20.4,21.6]

p value

 < 0.001

 < 0.001

 < 0.001

0.952

2–6

18.6 [18.1,20.0]

23.5 [22.5,24.5]

21.3 [20.1,21.8]

19.0 [18.5,20.2]

19.4 [18.6,20.2]

p value

 < 0.001

 < 0.001

1.000

0.323

0–6

19.7 [19.1,20.3]

24.4 [23.3,25.3]

22.1 [21.1,22.6]

20.4 [20.0,21.2]

20.2 [19.6,20.9]

p value

 < 0.001

 < 0.001

0.545

0.545

Central

0–2

12.6 [11.9,13.1]

13.5 [13.2,14.1]

13.3 [13.0,13.4]

13.0 [12.7,13.1]

13.0 [12.6,13.2]

p value

 < 0.001

 < 0.001

1.000

0.052

2–6

11.8 [11.3,12.3]

12.7 [12.3,13.4]

12.3 [11.9,12.4]

12.1 [11.9,12.6]

12.1 [11.7,12.5]

p value

 < 0.001

1.000

1.000

1.000

0–6

12.3 [11.9,12.6]

13.1 [12.8,13.7]

12.8 [12.4,12.9]

12.1 [11.9,12.6]

12.6 [12.1,12.8]

p value

 < 0.001

0.008

1.000

0.387

Posterior

0–2

10.0 [9.3,10.4]

10.9 [10.4,11.2]

10.7 [10.5,11.0]

10.4 [10.1,10.6]

10.2 [10.0,10.4]

p value

 < 0.001

 < 0.001

0.052

1

2–6

9.6 [9.2,10.1]

10.0 [9.6,10.5]

10.2 [9.8,10.4]

10.2 [9.8,10.4]

10.0 [9.8,10.5]

p value

0.023

 < 0.001

 < 0.001

0.037

0–6

9.9 [9.4,10.2]

10.5 [10.0,10.7]

10.5 [10.2,10.7]

10.3 [10.0,10.5]

10.2 [10.0,10.3]

p value

 < 0.001

 < 0.001

0.016

0.111

Total

0–2

14.3 [13.7,14.8]

16.5 [16.1,17.5]

15.6 [15.2,15.8]

15.1 [14.8,15.3]

14.7 [14.4,15.0]

p value

 < 0.001

 < 0.001

0.01

0.697

2–6

13.4 [12.9,14.1]

15.5 [15.0,16.2]

14.6 [13.9,14.8]

13.8 [13.4,14.3]

13.9 [13.4,14.3]

p value

 < 0.001

 < 0.001

1.000

0.545

0–6

13.9 [13.5,14.3]

16.1 [15.6,16.8]

15.1 [14.6,15.3]

14.4 [14.1,14.7]

14.3 [13.9,14.6]

p value

 < 0.001

 < 0.001

1.000

0.882