TABLE 2.
The Neuroretinal Rim MDB Tipping Point Values, Which are Associated With Initial Visual Field Damage, are Shown as Absolute Values and as Percentage Tissue Decrease, as Measured by Spectral-domain Optical Coherence Tomography Volume Scans
| Anatomic Region | MDB Tipping Point [95% CI] (μm) | Mean MDB Thickness of Normal (μm) | MDB Tipping Point Relative to Mean MDB Thickness of Normal (%) |
|---|---|---|---|
| Global | 216.0 [185.6, 246.3] | 312.8±41.4 | 31.0 |
| Superior | 218.1 [188.3, 248.0] | 345.2±59.1 | 36.8 |
| Inferior | 197.2 [163.6, 230.7] | 349.5±48.8 | 43.6 |
| Nasal | 219.7 [169.9, 269.4] | 312.0±49.4 | 29.6 |
| Temporal | 166.7 [137.6, 195.8] | 245.6±42.0 | 32.1 |
| Superior-nasal | 238.0 [195.4, 280.6] | 351.6±62.8 | 32.3 |
| Superior-temporal | 210.7 [175.1, 246.3] | 346.3±56.9 | 39.1 |
| Inferior-nasal | 233.4 [188.7, 278.1] | 359.7±56.5 | 35.1 |
| Inferior-temporal | 209.6 [148.0, 271.2] | 339.3±51.0 | 38.2 |
Results are expressed as means±SD, unless otherwise stated.
CI indicates confidence interval; MDB, minimum distance band.