Simultaneous Changes in Astigmatism with Noncycloplegia Refraction and Ocular Biometry in Chinese Primary Schoolchildren

Table 4

Baseline ocular biometry percentages associated with refractive status of non-CSA children.

Variables	Hyperopes (≥+0.5 D)		Emmetropes (−0.5 D to +0.5 D)		Myopes (≤−0.5 D)		value^a
	n	%	n	%	n	%
AL (mm)
<22.53 (25th percentile)	80	44	166	25.4	37	12.4	<0.001
22.53–23.58	89	48.9	362	55.4	119	39.8
>23.58 (75th percentile)	13	7.1	125	19.2	143	47.8
AL/CRC ratio
<2.89 (25th percentile)	69	37.9	134	20.5	30	10	<0.001
2.89–2.99	103	56.6	417	63.9	112	37.5
>2.99 (75th percentile)	10	5.5	102	15.6	157	52.5
Total	182	100	653	100	299	100

AL, axial length; CRC, corneal radius of curvature; D, diopters. ^aDetermined using Pearson χ² test.