Table 2.
Prevalence of myopia, hyperopia and astigmatism stratified by age
| Age | n | Myopia, % (95 % confidence intervals) | Hyperopia, % (95 % confidence intervals) | Astigmatism, % (95 % confidence intervals) | ||||
|---|---|---|---|---|---|---|---|---|
| All myopia ≤−0.75D (n = 15,845) | Low myopia ≤−0.75 to >−3D (n = 10,034) | Moderate myopia ≤−3 to >−6D (n = 4383) | High myopia ≤−6D (n = 1445) | All hyperopia ≥+1D (n = 21,201) | High hyperopia ≥+3D (n = 4494) | All astigmatism ≥D (n = 15,496) | ||
| 25–29 | 339 | 47.2 (41.8–52.5) | 26.5 (21.8–31.2) | 14.1 (5.1–23.2) | 5.3 (2.9–7.7) | 6.4 (3.8–9.0) | 1.1 (0.0–2.2) | 16.2 (12.3–20.1) |
| 30–34 | 469 | 38.3 (22.6–53.9) | 25.5 (16.7–34.2) | 9.4 (4.2–14.6) | 3.2 (1.5–4.9) | 5.5 (3.4–7.5) | 1.8 (−1.1–4.6) | 18.2 (14.3–22.0) |
| 35–39 | 2354 | 40.1 (29.2–51.0) | 25.8 (15.5–36.0) | 10.0 (7.9–12.1) | 3.7 (1.3–6.1) | 5.8 (3.0–8.6) | 1.4 (0.5–2.3) | 16.2 (14.5–17.9) |
| 40–44 | 5552 | 40.2 (32.0–48.5) | 27.5 (19.7–35.3) | 9.6 (7.0–12.3) | 3.3 (1.8–4.8) | 7.9 (6.3–9.5) | 2.2 (1.6–2.7) | 15.7 (13.2–18.1) |
| 45–49 | 4108 | 37.1 (29.4–44.7) | 25.1 (18.8–31.4) | 9.0 (6.5–11.4) | 2.9 (1.8–4.0) | 10.3 (7.5–13.2) | 2.4 (1.7–3.1) | 17.0 (15.1–18.8) |
| 50–54 | 5684 | 33.6 (29.6–37.6) | 20.9 (18.6–23.2) | 9.8 (8.0–11.6) | 2.7 (1.4–4.0) | 18.0 (15.6–20.4) | 3.3 (2.6–3.9) | 20.1 (16.3–23.8) |
| 55–59 | 8294 | 27.5 (23.5–31.5) | 16.6 (14.2–18.9) | 8.3 (6.6–9.9) | 2.5 (1.9–3.1) | 31.2 (27.5–34.9) | 5.7 (4.6–6.8) | 22.5 (18.2–26.9) |
| 60–64 | 10,594 | 21.4 (17.5–25.2) | 13.0 (10.9–15.2) | 6.0 (4.5–7.4) | 2.0 (1.4–2.7) | 31.2 (27.5–34.9) | 7.5 (6.0–9.0) | 25.2 (20.3–30.0) |
| 65–69 | 9445 | 15.9 (13.7–18.1) | 9.8 (8.4–11.2) | 4.7 (3.7–5.7) | 1.4 (1.1–1.6) | 50.2 (46.1–54.3) | 9.7 (8.2–11.1) | 28.0 (22.0–34.0) |
| 70–74 | 7674 | 13.9 (11.9–15.9) | 9.3 (7.8–10.9) | 3.4 (2.8–4.0) | 1.0 (0.6–1.5) | 54.3 (50.4–58.1) | 12.8 (9.9–15.7) | 33.8 (26.6–41.1) |
| 75–79 | 4211 | 15.9 (13.4–18.4) | 10.2 (8.5–11.8) | 3.9 (2.9–5.0) | 1.5 (1.0–1.9) | 56.3 (52.1–60.4) | 12.8 (9.9–15.7) | 44.3 (33.6–55.0) |
| 80–84 | 2069 | 17.8 (15.2–20.3) | 11.5 (10.1–12.9) | 3.8 (2.7–4.9) | 1.5 (1.0–2.1) | 52.8 (47.9–57.7) | 12.0 (9.7–14.3) | 51.1 (40.4–61.8) |
| 85–89 | 683 | 17.9 (14.0–21.8) | 12.4 (9.0–15.8) | 3.4 (2.0–4.8) | 1.4 (0.4–2.3) | 49.2 (42.5–55.9) | 13.4 (8.4–18.5) | 54.9 (42.9–66.8) |
| Age standardised prevalence (n = 61,476) | 30.60 (30.36–30.85) | 19.50 (19.35–19.65) | 8.08 (8.01–8.14) | 2.71 (2.69–2.73) | 25.23 (25.03–25.43) | 5.37 (5.33–5.41) | 23.86 (23.67–24.05) | |
D diopters