Development of Corneal Astigmatism (CA) according to Axial Length/Corneal Radius (AL/CR) Ratio in a One-Year Follow-Up of Children in Beijing, China

Table 1

The distributions of students in the two surveys.

Age (years)	Year 2014		Year 2015
		(%)		(%)
5	11	0.37	0	0
6	705	23.74	5	0.23
7	561	18.89	676	31.02
8	18	0.61	523	24.00
9	1243	41.85	19	0.87
10	425	14.31	709	32.54
11	7	0.23	241	11.06
12	0	0	6	0.28
Total	2970		2179