Table 1. Demographics, clinical and choroidal characteristics of study subjects (n = 345).
| Characteristics | Mean ± SD | Range |
|---|---|---|
| Age, yrs | 61.53 ± 8.77 | 47.19 to 86.72 |
| Gender, male (%) | 155 (44.9%) | |
| Axial length, mm | 23.58 ± 0.96 | 21.60 to 27.89 |
| IOP, mm Hg | 14.41 ± 2.84 | 6 to 20 |
| Ocular perfusion pressure, mmHg | 55.68 ± 8.39 | 37.44 to 96.11 |
| Systolic blood pressure, mmHg | 139.21 ± 20.63 | 95 to 226.50 |
| Diastolic blood pressure mmHg | 77.27 ± 10.85 | 54.50 to 133 |
| Body mass index, kg/m2 | 26.75± 5.13 | 12.15 to 52.95 |
| Serum glucose, mmol/L | 6.98 ± 3.35 | 2.8 to 22.9 |
| HbA1c, % | 6.26 ± 1.27 | 4.3 to 11.7 |
| Total cholesterol, mmol/L | 5.43 ± 1.26 | 2.49 to 10.40 |
| Triglycerides, mmol/L | 1.95 ± 1.38 | 0.42 to 14.95 |
| Blood creatinine, mmol/L | 78.92 ± 33.11 | 30 to 412 |
| Current smoking, % | 68 (19.8%) | |
| Alcohol consumption, % | 5 (1.5%) | |
| Choroidal Parameters | ||
| TCA, mm2 | 0.74 ± 0.21 | 0.198 to 1.237 |
| LA, mm2 | 0.49 ± 0.15 | 0.122 to 0.817 |
| SA, mm2 | 0.25 ± 0.06 | 0.076 to 0.441 |
| CVI (LA/TCA) | 65.61 ± 2.33 | 60.07 to 71.27 |
| LA/SA | 1.92 ± 0.20 | 1.50, 2.48 |
| SFCT, μm | 241.34 ± 97.11 | 40.24, 519.48 |
Data presented are means ± standard deviations, except for gender, HbA1c , current smoking and alcohol consumption which are number (%).
TCA, total sub-foveal choroidal area; LA, luminal area; SA, stromal area; CVI, choroidal vascularity index; LA/SA, luminal area/ stromal area; SFCT, sub-foveal choroidal thickness.