Table 3.

Axial length in the ortho-k and spectacle groups during the study period

	Ortho-k	Control
Before wearing the lens(mm)	24.71 ± 0.72	24.82 ± 0.77
After 1 year(mm)	24.98 ± 0.70	25.20 ± 0.78
Axial elongation(mm)	0.27 ± 0.17	0.38 ± 0.13
P-value	P < 0.01	P < 0.01