Research Article
A Small Disc Area Is a Risk Factor for Visual Field Loss Progression in Primary Open-Angle Glaucoma: The Glaucoma Stereo Analysis Study
Table 2
Comparison of ONH parameters between the progression and no-progression groups.
| Optic nerve head parameters | Progression () | No-progression () | Value |
| Vertical disc width | 1.79 ± 0.18 | 1.89 ± 0.24 | 0.017 | Horizontal disc width | 1.60 ± 0.24 | 1.69 ± 0.29 | 0.052 | Vertical cup-disc ratio | 0.83 ± 0.08 | 0.82 ± 0.08 | 0.574 | Horizontal cup-disc ratio | 0.73 ± 0.08 | 0.75 ± 0.09 | 0.227 | Minimum rim-disc ratio | 0.018 ± 0.024 | 0.018 ± 0.025 | 0.979 | Superior minimum rim-disc ratio | 0.077 ± 0.055 | 0.086 ± 0.060 | 0.363 | Inferior minimum rim-disc ratio | 0.043 ± 0.060 | 0.033 ± 0.040 | 0.209 | Superior rim width | 0.19 ± 0.09 | 0.21 ± 0.10 | 0.161 | Inferior rim width | 0.12 ± 0.11 | 0.12 ± 0.09 | 0.922 | Mean cup depth | 0.19 ± 0.07 | 0.21 ± 0.09 | 0.202 | Maximum cup depth | 0.50 ± 0.15 | 0.53 ± 0.20 | 0.368 | Height variation contour | 0.57 ± 0.22 | 0.58 ± 0.28 | 0.738 | Disc area | 2.24 ± 0.46 | 2.49 ± 0.67 | 0.016 | Cup area | 1.30 ± 0.47 | 1.50 ± 0.59 | 0.029 | Cup-disc area ratio | 0.57 ± 0.12 | 0.59 ± 0.11 | 0.265 | Rim area | 0.94 ± 0.26 | 0.99 ± 0.27 | 0.301 | Rim-disc area ratio | 0.43 ± 0.12 | 0.41 ± 0.11 | 0.265 | Rim-disc ratio of section 1 | 0.076 ± 0.045 | 0.067 ± 0.046 | 0.204 | Rim-disc ratio of section 2 | 0.11 ± 0.05 | 0.11 ± 0.06 | 0.94 | Rim-disc ratio of section 3 | 0.18 ± 0.06 | 0.17 ± 0.06 | 0.257 | Rim-disc ratio of section 4 | 0.20 ± 0.08 | 0.19 ± 0.07 | 0.462 | Rim-disc ratio of section 5 | 0.15 ± 0.09 | 0.14 ± 0.08 | 0.568 | Rim-disc ratio of section 6 | 0.065 ± 0.061 | 0.056 ± 0.045 | 0.293 | Disc volume | 0.87 ± 0.29 | 0.96 ± 0.47 | 0.217 | Cup volume | 0.25 ± 0.14 | 0.33 ± 0.24 | 0.04 | Rim volume | 0.17 ± 0.09 | 0.17 ± 0.10 | 0.995 | Rim decentering | 0.28 ± 0.44 | 0.31 ± 0.42 | 0.668 | Disc tilt angle | 11.51 ± 12.97 | 10.07 ± 12.29 | 0.486 |
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