Table 3.
Repeatability (intraclass correlation coefficients) of retinal nerve fiber layer thickness measurements in each body position, by subject group.
| Group | Position | Overall RNFL | Superior RNFL | Inferior RNFL |
|---|---|---|---|---|
| Younger healthy | ||||
| OD | Supine | 0.93 (0.87–0.99) | 0.99 (0.97–1.0) | 0.72 (0.51–0.93) |
| Sitting | 0.97 (0.95–0.99) | 0.99 (0.97–0.10) | 0.90 (0.81–0.99) | |
| OS | Supine | 0.97 (0.95–1.0) | 0.97 (0.94–1.0) | 0.91 (0.83–0.99) |
| Sitting | 0.98 (0.97–1.0) | 0.98 (0.96–1.0) | 0.98 (0.96–1.0) | |
| Older healthy | ||||
| OD | Supine | 0.87 (0.76–0.98) | 0.97 (0.93–0.99) | 0.72 (0.51–0.92) |
| Sitting | 0.93 (0.87–0.99) | 0.97 (0.95–0.99) | 0.86 (0.75–0.98) | |
| OS | Supine | 0.96 (0.92–0.99) | 0.95 (0.91–0.99) | 0.92 (0.85–0.99) |
| Sitting | 0.94 (0.86–0.99) | 0.95 (0.90–0.99) | 0.94 (0.88–0.99) | |
| Glaucoma | ||||
| OD | Supine | 0.99 (0.98–1.0) | 0.98 (0.97–1.0) | 0.98 (0.95–1.0) |
| Sitting | 0.98 (0.96–0.99) | 0.98 (0.97–1.0) | 0.92 (0.84–0.99) | |
| OS | Supine | 0.98 (0.95–1.0) | 0.98 (0.96–1.0) | 0.98 (0.96–1.0) |
| Sitting | 0.99 (0.98–1.0) | 0.97 (0.94–1.0) | 0.98 (0.96–1.0) | |
Values represent the mean and 95% confidence interval.
RNFL = Retinal nerve fiber layer