Mean retinal nerve fibre layer (RNFL) thickness (μm) by age groups
| Age group | RNFL (mean (1 SD)) | RNFL (range) | COV (%) (mean (1 SD)) |
|---|---|---|---|
| 1 | 95.3 (5.6) | 83.5–103.3 | 3.1 (0.8) |
| 2 | 90 (7.7) | 75.5–98.6 | 3.9 (1.5) |
| 3 | 80.2 (7.4) | 67.3–92.4 | 4.3 (3.8) |
| 4 | 77.6 (9.1) | 60.3–96.9 | 5.7 (4.3) |
| 5 | 80 (9.1) | 69.2–105.3 | 4.6 (2.0) |
| 6 | 75.3 (8) | 59.3–95 | 4.1 (2.5) |
| 7 | 74.5 (10.7) | 61.1–97.6 | 5.3 (5.4) |
| 8 | 67.5 (5.6) | 55.4–77.5 | 5.6 (3.9) |
Measurements are derived from retardation measurements, 1 degree retardation corresponds to approximately 7.4 μm.