Table 3. Changes in axial length in different groups.

Follow-ups	L-ICF group (n=22)	L-CCF group (n=22)	t	P	M-ICF group (n=28)	M-CCF group (n=25)	t	P
6mo	0.10±0.05	0.09±0.04	0.183	0.855	0.05±0.03	0.08±0.03	-2.218	0.031
1y	0.17±0.06	0.18±0.06	-0.126	0.900	0.12±0.05	0.17±0.05	-3.253	0.002
1.5y	0.24±0.08	0.27±0.10	-0.916	0.365	0.20±0.08	0.25±0.08	-2.364	0.022
2y	0.28±0.10	0.31±0.10	-0.815	0.420	0.23±0.08	0.30±0.11	-2.524	0.015

L-ICF: Low myopia subjects fitted with increased compression factor (1.75 D) ortho-k; L-CCF: Low myopia subjects fitted with conventional compression factor (0.75 D) ortho-k; M-ICF: Moderate myopia subjects fitted with increased compression factor (1.75 D) ortho-k; M-CCF: Moderate myopia subjects fitted with conventional compression factor (0.75 D) ortho-k.

mean±SD, mm