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 4

Oculometric parameters for male and female schoolchildren in grade 4 (aged 9–11 years) in 2014 and 2015 () (n).

Grade 4	Boys	Girls		95% CI
UCVA ± s (n)
Year 2014	0.89 ± 0.42 (795)	0.82 ± 0.41 (699)	0.001	0.02∼0.11
Year 2015	0.71 ± 0.40 (493)	0.63 ± 0.37 (455)	0.002	0.03∼0.12
AL ± smm (n)
Year 2014	23.88 ± 0.88 (886)	23.41 ± 0.93 (786)	0.001	0.38∼0.56
Year 2015	24.24 ± 1.01 (495)	23.80 ± 1.00 (456)	0.001	0.31∼0.56
K ± sD (n)
Year 2014	42.95 ± 1.38 (876)	43.67 ± 1.38 (783)	0.001	−0.90∼−0.54
Year 2015	43.05 ± 1.43 (447)	43.61 ± 1.38 (418)	0.001	−0.74∼−0.37
CA ± sD (n)
Year 2014	1.11 ± 0.63 (876)	1.15 ± 0.53 (783)	0.231	−0.12∼0.03
Year 2015	1.12 ± 0.61 (447)	1.19 ± 0.56 (418)	0.107	−0.14∼0.01
CR ± smm (n)
Year 2014	7.87 ± 0.25 (876)	7.75 ± 0.24 (783)	0.001	0.09∼0.14
Year 2015	7.85 ± 0.26 (447)	7.75 ± 0.24 (418)	0.001	0.07∼0.13

s means standard deviation; .