Table 2.
Characteristics of vertical, horizontal, and maximum diameters measured by two independent observers.
| 1st observer x ± SD (min-max) |
2nd observer x ± SD (min-max) |
P value | r | |
|---|---|---|---|---|
| NTG group | ||||
| Vertical diameter | 648.98 ± 123.76 (510–1000) |
650.33 ± 118.87 (525–989) |
0.238a | 0.99b∗ |
| Horizontal diameter | 631.50 ± 64.44 (520–840) |
630.92 ± 69.89 (541–829) |
0.124a | 0.77b∗ |
| Maximum diameter | 731.45 ± 111.02 (624–1055) |
732.23 ± 110.13 (608–1034) |
0.422a | 0.99b∗ |
| Control group | ||||
| Vertical diameter | 512.02 ± 89.45 (336–706) |
513.43 ± 84.23 (353–690) |
0.074a | 0.99b∗ |
| Horizontal diameter | 546.54 ± 86.65 (427–804) |
548.68 ± 83.35 (442–799) |
0.069a | 0.99b∗ |
| Maximum diameter | 592.11 ± 95.32 (440–802) |
582.45 ± 90.24 (470–819) |
0.086a | 0.99b∗ |
a t-test, br = Pearson's correlation coefficient, SD = standard deviation, and NTG = normal tension glaucoma; ∗p < 0.001.