Table 4.
Global Retinal Nerve Fiber Layer Thickness Derived Using 3D Volume Scans, Pre- and Post-Interpolation (Annulus Size 2.5–3.5 mm)
| Mean Global RNFL Thickness Pre- Interpolation Thickness (µm)a | Mean Global RNFL Thickness Post-Interpolation Thickness (µm)a | P | Mean Absolute Percentage Difference (Pre- vs. Post- Interpolation) | Standard Deviation of Percentage Difference (Pre- vs. Post-Interpolation) | P | |
|---|---|---|---|---|---|---|
| Glaucoma (n = 98)b | 77.0 ± 11.6 | 75.1 ± 11.2 | 0.23 | 0.03% | 4.7% | 0.94 |
| Normal (n = 95) | 104.0 ± 10.6 | 104.0 ± 10.0 | 0.98 | 0.1% | 3.3% | 0.68 |
a
Results are presented as mean ± standard deviation.
b
MATLAB software reported blank values for 8 patients after interpolation. Average global retinal nerve fiber layer thickness was recalculated using the remaining 98 of 106 glaucoma patients.