Table 2.
Measurement Values of the Macular and Circumpapillary Vascular Density with and without Magnification Correction in the 2 Groups
| Variable | Control Group (n = 96) | Glaucoma Group (n = 90) | P Value | Effect Size∗ |
|---|---|---|---|---|
| Macular vascular density | ||||
| Image quality (AU) | 65.2 (46.7–72.0) | 63.0 (45.8–71.0) | <0.01 | 0.42 |
| — | — | — | — | |
| Superficial (%) | 31.8 (28.5–34.8) | 31.0 (26.4–34.5) | <0.01 | 0.43 |
| 31.7 (27.4–35.1) | 30.9 (27.1–34.5) | <0.01 | 0.39 | |
| Deep (%) | 43.1 (39.2–52.3) | 42.6 (39.2–46.5) | 0.19 | 0.19 |
| 43.1 (39.0–52.7) | 42.7 (39.2–47.1) | 0.33 | 0.18 | |
| Outer retina (%) | 20.4 (18.4–22.8) | 20.2 (18.2–22.6) | 0.20 | 0.19 |
| 20.4 (18.3–23.0) | 20.0 (18.2–22.5) | 0.066 | 0.27 | |
| Choriocapillaris (%) | 51.8 (48.7–53.9) | 51.8 (49.8–53.5) | 0.86 | 0.025 |
| 51.7 (48.4–53.7) | 51.8 (49.5–53.3) | 0.98 | 0.0082 | |
| Circumpapillary vascular density | ||||
| Image quality (AU) | 65.7 (46.5–73.0) | 64.2 (50.4–71.8) | <0.01 | 0.28 |
| Nerve head (%) | 60.4 (50.5–69.8) | 55.9 (43.7–66.9) | <0.01 | 0.79 |
| 58.6 (48.6–67.2) | 54.5 (41.4–64.4) | <0.01 | 0.74 | |
| Vitreous (%) | 69.5 (61.8–76.2) | 67.5 (57.5–76.3) | <0.01 | 0.46 |
| 67.3 (59.3–73.7) | 65.4 (56.9–73.8) | <0.01 | 0.45 | |
| RPC (%) | 67.3 (58.3–74.7) | 63.6 (52.4–72.3) | <0.01 | 0.75 |
| 67.3 (59.3–73.7) | 61.8 (51.7–70.1) | <0.01 | 0.70 | |
| Choroid disc (%) | 77.5 (63.8–91.5) | 79.0 (67.0–90.9) | 0.18 | 0.20 |
| 75.3 (63.7–87.8) | 76.4 (65.5–88.6) | 0.23 | 0.18 | |
AU = arbitrary unit; RPC= radial peripapillary capillary; — = not available.
Measurement values without (top) and with (bottom) magnification correction are shown as mean (95% confidence interval).
∗
Effect sizes are expressed as Cohen’s d value.