Table 2.
The threshold values of resistance index (RI) in the orbital arteries and the corresponding values of sensitivity (Se), Specificity (Sp), positive predictive value (PPV) and negative predictive value (NPV) in A-AION patients [15].
| Arteries | CRA | PCA t | PCA n | OA |
|---|---|---|---|---|
| Cut-off point | 0.67 | 0.71 | 0.68 | 0.81 |
| Se | 0.76 | 0.86 | 0.86 | 1 |
| Sp | 0.81 | 0.96 | 0.93 | 0.96 |
| PPV | 0.51 | 0.88 | 0.76 | 0.89 |
| NPV | 0.92 | 0.96 | 0.96 | 1 |
CRA–central retinal artery; PCAt—temporal posterior ciliar artery; PCAn—nasal posterior ciliar artery; OA—ophthalmic artery.