Table 2.
OCT-A parameters in control participants and PD patients with different Hoehn-Yahr stages
| Control participants (n = 45) | PD patients | P value# | ||
|---|---|---|---|---|
| Stage I (n = 20) | Stage II + III (n = 22) | |||
| Age, years (mean ± SD) | 64.33 ± 11.78 | 64.20 ± 6.05 | 66.41 ± 7.00 | 0.29 |
| Sex, male, n (%) | 11 (24.4) | 8 (40.0) | 12 (54.5) | 0.35 |
| FAZ (mm2) | 0.28 ± 0.10 | 0.28 ± 0.09 | 0.27 ± 0.10 | 0.77 |
| VDsM, fovea (%) | 18.11 ± 6.95 | 17.85 ± 6.81 | 18.37 ± 7.07 | 0.50 |
| VDsM, parafovea (%) | 46.77 ± 5.19 | 46.92 ± 5.65 | 46.64 ± 4.71 | 0.50 |
| VDdM, fovea (%) | 32.66 ± 6.39 | 32.12 ± 6.00 | 33.17 ± 6.70 | 0.34 |
| VDdM, parafovea (%) | 51.63 ± 5.36 | 52.83 ± 4.95 | 50.50 ± 5.49 | 0.04* |
| VDrID (%) | 50.65 ± 6.83 | 52.50 ± 6.70 | 48.91 ± 6.49 | 0.03* |
| VDrPP (%) | 49.36 ± 6.52 | 48.19 ± 8.78 | 50.47 ± 2.69 | 0.26 |
Data are expressed as means ± standard deviation
OCT-A, optical coherence tomography angiography; FAZ, foveal avascular zone; VDsM, vessel density in the superficial plexus of the central macula; VDdM, vessel density in the deep plexus of the central macula; VDrID, vessel density in the radial peripapillary capillary layer of the disc region; VDrPP, vessel density in the radial peripapillary capillary layer of the peripapillary region
#Comparison between PD patients with Hoehn-Yahr stage I and those with Hoehn-Yahr stage II and III. *P < 0.05