Analysis of ocular structural parameters and higher-order aberrations in Chinese children with myopia

Table 1 Comparison of ocular structure parameters among children with low, middle, and high myopia

	Low myopia (mean ± SD)	Middle myopia (mean ± SD)	High myopia (mean ± SD)	F	P value
Spherical equivalent (D)	-1.69 ± 0.70	-3.86 ± 0.69	-7.55 ± 1.12	1572.765	< 0.001
AL (mm)	23.83 ± 0.75	24.63 ± 0.69	26.00 ± 0.94	259.188	< 0.001
R (mm)	7.77 ± 0.25	7.73 ± 0.24	7.74 ± 0.27	1.809	0.165
AL/R	3.07 ± 0.07	3.19 ± 0.08	3.37 ± 0.10	468.348	< 0.001
K1 (D)	42.95 ± 1.36	43.17 ± 1.27	43.07 ± 1.61	0.503	0.605
K2 (D)	43.89 ± 1.49	44.21 ± 1.37	44.46 ± 1.74	4.925	< 0.001
Km (D)	43.43 ± 1.42	43.69 ± 1.31	43.77 ± 1.67	1.933	0.146
CCT (μm)	561.52 ± 32.11	559.15 ± 23.58	552.85 ± 36.26	2.684	0.070
ACD (mm)	3.30 ± 0.17	3.33 ± 0.15	3.34 ± 0.17	2.450	0.088
ACA (°)	60.73 ± 5.84	59.19 ± 6.69	59.89 ± 7.27	1.253	0.287

AL: Axial length; CCT: Central corneal thickness; ACD: Anterior chamber depth; ACA: Anterior chamber angle.