Table 2.
Arteriole-to-venule ratio (AVR), mean fractal dimension (mean-D), and tortuosity index (TI) values of the study groups.
| AVR | Mean-D | TI1 | TI2 | |
|---|---|---|---|---|
| Hypertensive retinopathy | 0.68 ± 0.09 | 1.41 ± 0.04 | 72 ± 26 | 1.52 ± 1.36 |
| Controls | 0.77 ± 0.07 | 1.45 ± 0.04 | 64 ± 24 | 1.44 ± 0.74 |
| P ∗ (n = 16) | 0.01 | 0.04 | 0.03 | 0.84 |
| CADASIL | 0.67 ± 0.10 | 1.40 ± 0.04 | 67 ± 23 | 1.29 ± 1.06 |
| Controls | 0.78 ± 0.07 | 1.45 ± 0.04 | 61 ± 22 | 1.32 ± 0.94 |
| P ∗ (n = 11) | 0.03 | 0.002 | 0.08 | 0.70 |
Values are expressed as mean ± SD.
∗Wilcoxon signed rank test.
TI1: tortuosity index measured by using the method implemented in Cioran.
TI2: tortuosity index measured using the method by Cheung et al. [18].