Table 2.
Ophthalmic artery blood flow measurements in normal tension glaucoma (NTG) patients and healthy control subjects
| Blood flow parameters | NTG (n = 16) | Healthy (n = 16) | p‐value | ||
|---|---|---|---|---|---|
| Mean | Range | Mean | Range | ||
| Blood flow [ml/min] | 9.6 ± 3.9 | 5.6–16.8 | 11.9 ± 4.8 | 6.0–24.0 | 0.12 |
| Resistance index (RI) | 0.73 ± 0.08 | 0.52–0.88 | 0.68 ± 0.13 | 0.42–0.86 | 0.18 |
| Pulsatility index (PI) | 1.36 ± 0.28 | 0.77–2.04 | 1.22 ± 0.40 | 0.52–1.82 | 0.27 |
| Peak Systolic Velocity [cm/s] | 29.2 ± 10.2 | 17.8–54.5 | 28.0 ± 7.4 | 16.3–43.4 | 0.96 |
| Vessel area [mm2] | 1.68 ± 0.35 | 1.24–2.23 | 1.94 ± 0.51 | 1.40–3.37 | 0.22 |