Table 3 Comparison of objective visual quality parameters between the two groups in myopic children at Baseline and 1 month after orthokeratology treatment

STZ (Baseline)

44.36 ± 8.22

0.27 ± 0.06

0.40 ± 0.22

 − 0.16 ± 0.10

 − 0.04 ± 0.11

0.15 ± 0.12

STZ (1 month)

30.43 ± 9.36

0.18 ± 0.05

1.23 ± 0.76

0.02 ± 0.15

0.16 ± 0.16

0.37 ± 0.15

∆a

 − 14.24 ± 10.48

 − 0.09 ± 0.07

0.84 ± 0.72

0.18 ± 0.15

0.20 ± 0.16

0.22 ± 0.14

CTZ (Baseline)

41.93 ± 8.55

0.24 ± 0.06

0.47 ± 0.26

 − 0.13 ± 0.10

 − 0.01 ± 0.12

0.19 ± 0.11

CTZ (1 month)

29.70 ± 10.90

0.19 ± 0.05

1.00 ± 0.59

0.03 ± 0.15

0.17 ± 0.16

0.35 ± 0.15

∆b

 − 10.74 ± 9.46

 − 0.06 ± 0.07

0.58 ± 0.53

0.15 ± 0.15

0.17 ± 0.16

0.16 ± 0.16

t1

1.653

1.891

 − 1.818

 − 1.460

 − 1.375

 − 1.793

P1

0.101

0.061

0.071

0.147

0.172

0.075

t2

9.217

8.677

 − 8.701

 − 8.037

 − 8.309

 − 9.618

P2

 < 0.001*

 < 0.001*

 < 0.001*

 < 0.001*

 < 0.001*

 < 0.001*

t3

7.012

5.739

 − 6.512

 − 7.218

 − 7.411

 − 6.914

P3

 < 0.001*

 < 0.001*

 < 0.001*

 < 0.001*

 < 0.001*

 < 0.001*

t4

 − 2.002

 − 2.253

2.369

0.834

0.869

2.085

P4

0.047*

0.026*

0.019*

0.406

0.386

0.039*