Table 4 The percentage of preoperative to postoperative changes in corneal biomechanics between both groups

Group I

Mean ± SD

- 17.1 ± 5.26

−17.36 ± 7.09

−2.36 ± 6.13

−5.4 ± 9.32

−2.03 ± 1.22

−6.73 ± 3.90

−9.60 ± 2.93

−7.55 ± 6.57

−11.28 ± 4.03

−13.6 ± 5.27

15.9 ± 6.8

5.13 ± 1.74

range

−25.2to −6.8

−34.3 to-6.3

−12.1 to 14.6

−14.9 to 7.1

−3.7 to 0.0

−15.5 to-0.9

−17.5 to-5.6

−23.5 to 4.4

−21.2 to −3.0

−24.5 to −5.9

3.2

to 30.3

3.6 to 12.0

Group II

Mean ± SD

−27.04 ± 9.39

−33.30 ± 12.45

−6.59 ± 4.99

10.28 ± 7.28

−6.12 ± 1.49

−13.48 ± 5.17

−8.09 ± 3.29

−5.00 ± 3.24

−18.94 ± 5.27

−9.00 ± 4.22

28.99 ± 12.15

24.38 ± 7.97

range

−54.3 to-14.9

−52.1 to −8.5

−16.9 to 1.8

−16.2 to 3.0

−8.6 to −3.3

−21.8 to −4.2

−14.0 to −3.4

−11.8 to 3.3

−26.7 to-7.1

−18.4 to-2.8

−2.6 to 50.3

9.3 to41.3

P value

0.001*

0.001*

0.23

0.312

0.001^*

0.001^*

0.152

0.044^*

0.004*

0.001*

0.001*

0.001*