Internal Astigmatism and Its Role in the Growth of Axial Length in School-Age Children

Table 2

The axial length in different DIA.

Group	Cases	Axial length in the eye with less IA (mm)	Axial length in the eye with larger IA (mm)	t
DIA = 0 D	128	23.27 ± 0.99 (right eye)	23.29 ± 0.96 (left eye)	0.89	>0.05
0 < DIA< 0.5 D	292	23.22 ± 0.92	23.24 ± 0.95	0.44	>0.05
DIA ≥ 0.5 D	192	23.17 ± 0.95	23.28 ± 0.97	2.65	<0.05

DIA: difference of internal astigmatism between both eyes; IA: internal astigmatism.