Table 1 Table of presenting visual acuity. Mean SE (standard deviation, SD) in diopters [D]
From: Refractive errors and visual impairment among children and adolescents in southernmost China
Age groups | n | Mild PVAI (CI) (%) | Moderate PVAI (CI) (%) | Severe PVAI (CI) (%) | Abnormal UCVA (CI) (%) | UCVA worse than 20/40 in worse eye (CI) (%) | Mean SE[D] |
|---|---|---|---|---|---|---|---|
6–8 | 11,277 | 2.0 (0.18–0.2) | 0.9 (0.7–1.1) | 20.0 (0.0–0.0) | 5.7 (24.9–26.5) | 6.0 (5.6–6.4) | -0.98 ± 1.37 |
9–11 | 12,292 | 7.2 (6.8–7.7) | 8.3 (7.8–8.8) | 0.2 (0.1–0.2) | 55.4 (54.5–56.2) | 27.2 (26.5–28.0) | -1.16 ± 1.42 |
12–15 | 7955 | 9.6 (CI: 8.9–10.2) | 13.7 (13.0–14.5) | 0.4 (0.3–0.6) | 64.0 (63.0–65.1) | 40.5 (39.4–41.6) | -1.39 ± 1.50 |
Total | 31,524 | 6.0 (5.7–6.2) | 7.0 (6.8–7.3) | 0.2 (0.1–0.2) | 46.9 (46.4–47.5) | 23.0 (22.5–23.5) | -1.16 ± 1.43 |