The biometric parameters of aniso-astigmatism and its risk factor in Chinese preschool children: the Nanjing eye study

Table 2 Comparisons of interocular differences in ocular biometric parameters between groups with vs. without aniso-astigmatism

	AL (mm)		MCR (mm)		AL/CR		CCT (mm)		ACD (mm)		LT (mm)
	Mean ± SD	P	Mean ± SD	P	Mean ± SD	P	Mean ± SD	P	Mean ± SD	P	Mean ± SD	P
Vectorial aniso-TA group (N)		0.001		< 0.001		0.001		0.19		0.01		0.09
Group A (44)	0.19 ± 0.24		0.12 ± 0.09		0.05 ± 0.05		9.50 ± 17.17		0.09 ± 0.09		0.10 ± 0.10
Group B (1087)	0.11 ± 0.14		0.07 ± 0.07		0.03 ± 0.03		7.59 ± 14.27		0.06 ± 0.08		0.07 ± 0.09
Vectorial aniso-CA group (N)		0.89		< 0.001		< 0.001		0.30		0.79		0.78
Group C (278)	0.11 ± 0.14		0.11 ± 0.09		0.04 ± 0.04		7.54 ± 14.74		0.06 ± 0.07		0.08 ± 0.09
Group D (853)	0.11 ± 0.14		0.06 ± 0.06		0.03 ± 0.03		7.70 ± 14.29		0.06 ± 0.08		0.07 ± 0.10
Vectorial aniso-RA group (N)		0.48		< 0.001		< 0.001		0.36		0.42		0.87
Group E (273)	0.12 ± 0.15		0.11 ± 0.09		0.04 ± 0.04		7.95 ± 15.18		0.06 ± 0.07		0.07 ± 0.08
Group F (858)	0.11 ± 0.14		0.06 ± 0.06		0.03 ± 0.03		7.57 ± 14.14		0.06 ± 0.08		0.08 ± 0.10
Non-vectorial aniso-TA group (N)		< 0.001		0.001		< 0.001		0.97		0.81		0.68
Group G (22)	0.28 ± 0.30		0.13 ± 0.09		0.06 ± 0.06		8.95 ± 17.20		0.06 ± 0.06		0.07 ± 0.09
Group H(1109)	0.10 ± 0.14		0.07 ± 0.07		0.03 ± 0.03		7.63 ± 14.34		0.06 ± 0.08		0.07 ± 0.09

All numbers showed in this table were calculated as absolute values of interocular deviation with a form of mean ± standard deviation
AL axial length, MCR mean corneal curvature radius, CCT central corneal thickness, ACD anterior chamber depth, LT lens thickness, SD standard deviation, N number

ISSN: 1471-2415