Table 2.
Median Refractive Error in 1-Year Age Intervals for the Pediatric Population
| Median (IQR) | |||
|---|---|---|---|
| Age,* y (n) | SER | Sphere | Astigmatic Error |
| 0–1 (7) | +4.25 (1.6) | +4.50 (1.75) | –0.75 (1.5) |
| 1–2 (8) | +3.43 (1.1) | +4.25 (2.13) | –0.38 (0.9) |
| 2–3 (4) | +3.63 (1.5) | +4.50 (1.4) | –1.25 (1.2) |
| 3–4 (7) | +3.12 (2.6) | +4.0 (2.5) | –0.75 (1.8) |
| 4–5 (5) | +3.00 (0.4) | +3.25 (0.75) | –0.50 (1.3) |
| 5–6 (6) | +2.82 (2.3) | +2.88 (2.3) | –1.50 (1.1) |
| 6–7 (2) | +2.50 (1.5) | +2.0 (1) | –1.0 (1.0) |
| 7-8 (4) | +3.86 (1.3) | +4.25 (1.7) | –0.75 (0.8) |
| 8–9 (7) | +4.00 (1.5) | +4.50 (1.5) | –1.0 (0.5) |
| 9–10 (5) | +3.00 (4.0) | +3.00 (3.75) | –1.0 (1.0) |
| 10–11 (4) | +1.63 (5.2) | +2.50 (3.75) | –1.25 (1.4) |
| 11–12 (5) | 0.00 (4.5) | 0.00 (5) | –0.50 (1.0) |
| 12–13 (1) | –0.25 (0) | +0.75 (0) | –2.00 (0) |
| 13–14 (4) | +1.75 (2.1) | +2.75 (1.1) | –1.50 (1.5) |
| 14–15 (6) | +3.25 (2.9) | +0.75 (2.1) | –1.00 (1.3) |
| 15–16 (2) | +0.13 (1.2) | +0.75 (1.8) | –1.25 (1.3) |
| 16–17 (8) | –0.13 (1.4) | +0.50 (2.3) | –1.25 (1.1) |
*
Children are represented only once in each age group but may be represented in more than one group.