| Normal controls | NTG patients | P value | |
---|---|---|---|---|
 |  | Early | Advanced |  |
Subjects (n) | 93 | 48 | 47 | Â |
Age (years) | 56.35 ± 10.46 | 53.92 ± 12.03 | 62.38 ± 11.96 | <0.001a |
Gender (male/female) | 52 / 41 | 22 / 26 | 32 / 15 | 0.009b |
Axial length (mm) | 23.79 ± 0.88 | 23.78 ± 0.91 | 23.96 ± 1.24 | 0.590c |
GAT (mmHg) | 14.97 ± 2.53 | 15.10 ± 3.18 | 15.17 ± 2.99 | 0.874a |
CCT (μm) | 550.84 ± 26.84 | 551.29 ± 33.45 | 544.66 ± 33.62 | 0.465c |
Spherical equivalent (diopter) | −0.50 ± 1.68 | −0.43 ± 1.61 | −0.59 ± 1.95 | 0.891a |
Visual field | ||||
 MD (dB) | −1.57 ± 1.57 | −3.10 ± 1.59 | −12.63 ± 5.63 | <0.001a |
 VFI (%) | 98.67 ± 1.74 | 94.21 ± 4.37 | 67.17 ± 21.49 | <0.001a |
 PSD (dB) | 1.93 ± 0.80 | 3.84 ± 2.36 | 9.72 ± 3.97 | <0.001a |
ORA parameters (mm Hg) | ||||
 CH | 10.83 ± 1.60 | 10.56 ± 1.44 | 9.78 ± 1.52 | 0.001c |
 CRF | 10.67 ± 1.88 | 10.16 ± 1.84 | 9.67 ± 1.34 | 0.008a |
 IOPg | 15.15 ± 3.96 | 14.21 ± 3.60 | 14.79 ± 3.51 | 0.373c |
 IOPcc | 15.22 ± 3.70 | 14.69 ± 3.06 | 16.05 ± 3.93 | 0.183c |
HRT parameters | ||||
 Linear cup-to-disc ratio | 0.62 ± 0.15 | 0.69 ± 0.12 | 0.72 ± 0.13 | <0.001a |
 Rim area (mm2) | 1.57 ± 0.47 | 1.10 ± 0.28 | 0.98 ± 0.28 | <0.001a |
 Rim volume (mm3) | 0.38 ± 0.19 | 0.26 ± 0.12 | 0.20 ± 0.10 | <0.001a |
 Mean RNFL thickness (mm) | 0.23 ± 0.09 | 0.20 ± 0.08 | 0.16 ± 0.11 | 0.001a |