Table 2.
Oculometric parameters of the students in grades 1 and 4 in 2014 and 2015 () (n).
| Grade 1 (aged 5–8 years) | Grade 4 (aged 9–11 years) | |
|---|---|---|
| UCVA ± s (n) | ||
| Year 2014 | 1.02 ± 0.26 (1167) | 0.83 ± 0.43 (769) |
| Year 2015 | 0.92 ± 0.30 (1167) | 0.64 ± 0.37 (769) |
| p | 0.001∗ | 0.001∗ |
| 95% CI | −0.12∼−0.08 | −0.21∼−0.16 |
| AL ± smm (n) | ||
| Year 2014 | 22.73 ± 0.73 (1161) | 23.65 ± 0.93 (942) |
| Year 2015 | 23.14 ± 0.86 (1161) | 24.03 ± 1.02 (942) |
| p | 0.001∗ | 0.001∗ |
| 95% CI | 0.38∼0.44 | 0.35∼0.41 |
| K ± sD (n) | ||
| Year 2014 | 43.29 ± 1.46 (1078) | 43.29 ± 1.44 (850) |
| Year 2015 | 43.30 ± 1.45 (1078) | 43.31 ± 1.43 (850) |
| p | 0.768 | 0.710 |
| 95% CI | −0.14∼0.10 | −0.09∼0.13 |
| CA ± sD (n) | ||
| Year 2014 | 1.11 ± 0.62 (1078) | 1.13 ± 0.59 (850) |
| Year 2015 | 1.13 ± 0.59 (1078) | 1.15 ± 0.59 (850) |
| p | 0.440 | 0.311 |
| 95% CI | −0.03∼0.07 | −0.02∼0.07 |
| CR ± smm (n) | ||
| Year 2014 | 7.80 ± 0.26 (1078) | 7.80 ± 0.26 (850) |
| Year 2015 | 7.81 ± 0.26 (1078) | 7.80 ± 0.26 (850) |
| p | 0.791 | 0.716 |
| 95% CI | −0.02∼0.02 | −0.02∼0.02 |
| AL/CR ± s (n) | ||
| Year 2014 | 2.91 ± 0.17 (1078) | 3.03 ± 0.12 (849) |
| Year 2015 | 2.97 ± 0.11 (1078) | 3.08 ± 0.15 (849) |
| p | 0.001∗ | 0.001∗ |
| 95% CI | 0.05∼0.07 | 0.04∼0.06 |
s = standard deviation; mm = millimeter; D = diopter; ∗p < 0.001.