Table 3.
Choroidal characteristics of studied patients at hospital admission and after recovery, compared with age- and gender-matched healthy controls
| Choroidal characteristics | At hospital admission (mean ± SD) | After recovery¥ (mean ± SD) | Healthy controls (mean ± SD) | p value* | ||
|---|---|---|---|---|---|---|
| EDI-OCT images’ quality scores | 23.4 ± 2.5 | 23.7 ± 2.3 | 23.6 ± 2.6 | 0.716 | ||
| Subfoveal choroidal thickness, µm | 352.6 ± 67.3 | 317.8 ± 66.1 | 314.0 ± 41.0 | < 0.0001 | ||
| Nasal 3 mm choroidal thickness, µm | 202.2 ± 55.2 | 183.2 ± 57.6 | 178.1 ± 54.1 | 0.028 | ||
| Temporal 3 mm choroidal thickness, µm | 252.9 ± 59.8 | 227.7 ± 57.5 | 231.4 ± 15.2 | 0.005 | ||
| Mean choroidal thickness, µm | 269.2 ± 49.7 | 242.9 ± 48.8 | 241.2 ± 24.8 | < 0.0001 | ||
| Subfoveal (1.5 mm region) | ||||||
| Total choroidal area, mm2 | 0.56 ± 0.11 | 0.50 ± 0.09 | 0.49 ± 0.10 | < 0.0001 | ||
| Vascular area, mm2 | 0.34 ± 0.06 | 0.32 ± 0.06 | 0.31 ± 0.07 | 0.066 | ||
| Stromal area, mm2 | 0.22 ± 0.06 | 0.18 ± 0.03 | 0.18 ± 0.03 | < 0.0001 | ||
| Stromal/vascular area ratio | 0.65 ± 0.08 | 0.58 ± 0.06 | 0.57 ± 0.07 | < 0.0001 | ||
| Choroidal vascularity index | 0.61 ± 0.02 | 0.63 ± 0.02 | 0.64 ± 0.03 | < 0.0001 | ||
| Macular (6 mm region) | ||||||
| Total choroidal area, mm2 | 1.79 ± 0.32 | 1.64 ± 0.30 | 1.63 ± 0.28 | 0.002 | ||
| Vascular area, mm2 | 1.07 ± 0.15 | 1.04 ± 0.21 | 1.04 ± 0.20 | 0.443 | ||
| Stromal area, mm2 | 0.72 ± 0.17 | 0.60 ± 0.10 | 0.59 ± 0.08 | < 0.0001 | ||
| Stromal/vascular area ratio | 0.66 ± 0.08 | 0.59 ± 0.06 | 0.58 ± 0.07 | < 0.0001 | ||
| Choroidal vascularity index | 0.60 ± 0.03 | 0.63 ± 0.02 | 0.63 ± 0.03 | < 0.0001 | ||
¥At the third month of follow-up
*One-way analysis of variance (statistically significant p values are shown in italic font)