Table 3.
Comparison of the optic disc vessel density among three groups.
| Control (n = 39) | POAG (n = 32) | PACG (n = 30) | p* | p** | p*** | |
|---|---|---|---|---|---|---|
| Average capillary VD (%) | ||||||
| Whole image | 47.90 ± 1.98 | 39.96 ± 5.18 | 41.50 ± 4.55 | 0.000 | 0.000 | 0.429 |
| Inside disc | 48.03 ± 5.08 | 45.58 ± 7.17 | 45.68 ± 5.34 | 0.243 | 0.164 | 0.997 |
| Peripapillary | 50.84 ± 2.03 | 40.84 ± 6.22 | 43.70 ± 5.85 | 0.000 | 0.000 | 0.158 |
| 8-sector peripapillary VD (%) | ||||||
| Superior | 50.44 ± 4.21 | 41.25 ± 9.75 | 41.53 ± 9.72 | 0.000 | 0.000 | 0.993 |
| Superior nasal | 47.10 ± 3.64 | 39.66 ± 7.08 | 38.63 ± 8.29 | 0.000 | 0.000 | 0.861 |
| Inferior nasal | 45.33 ± 4.14 | 39.66 ± 7.44 | 38.97 ± 7.46 | 0.001 | 0.000 | 0.930 |
| Inferior | 49.23 ± 4.45 | 35.47 ± 10.72 | 40.39 ± 8.78 | 0.000 | 0.000 | 0.133 |
| Inferior temporal | 57.90 ± 3.56 | 33.81 ± 11.47 | 49.59 ± 7.92 | 0.000 | 0.000 | 0.000 |
| Temporal lower | 50.95 ± 3.49 | 44.84 ± 8.01 | 46.47 ± 6.94 | 0.001 | 0.007 | 0.674 |
| Temporal upper | 55.41 ± 2.72 | 48.55 ± 7.95 | 51.50 ± 6.48 | 0.000 | 0.010 | 0.257 |
| Superior temporal | 53.41 ± 8.02 | 43.00 ± 10.32 | 45.57 ± 9.18 | 0.000 | 0.001 | 0.557 |
Values are presented as mean ± standard deviation unless otherwise indicated. *Comparison between the control and POAG groups (Games-Howell post-hoc test). **Comparison between the control and PACG groups (Games-Howell post-hoc test). ***Comparison between the POAG and PACG groups (Games-Howell post-hoc test). VD, vessel density; PACG, primary angle-closure glaucoma; POAG, primary open-angle glaucoma.