Table 1 Foveal and parafoveal vascular densities in healthy subjects in 8 age groups. Abbreviations: SVD: superficial vasclar density; DVD, deep vascular density; CVD, choroidal vascular density; CVI, choroidal vascular index and FAZ, foveal avascular zone
Group1 | Group2 | Group3 | Group4 | Group5 | Group6 | Group7 | Group8 | |||
|---|---|---|---|---|---|---|---|---|---|---|
Total (369 Eyes) | < 10 (26 Eyes) | 10–20 (39 Eyes) | 20–30 (49 Eyes) | 30–40 (56 Eyes) | 40–50 (51 Eyes) | 50–60 (53 Eyes) | 60–70 (70 Eyes) | > 70 (25 Eyes) | P | |
Foveal SVD | 20.51 ± 7 | 20.23 ± 5.42 | 18.34 ± 5.88 | 25 ± 6.29 | 25.31 ± 5.65 | 19.68 ± 7.79 | 20.21 ± 5.84 | 17.29 ± 6.57 | 15.96 ± 5.73 | < 0.001 |
Parafoveal SVD | 51.15 ± 3.22 | 52.18 ± 2.51 | 51.81 ± 1.9 | 52.47 ± 2.69 | 52.92 ± 2.31 | 51.4 ± 2.51 | 50.79 ± 3.61 | 48.94 ± 3.31 | 48.94 ± 3.83 | < 0.001 |
Foveal DVD | 34.68 ± 6.94 | 36.77 ± 5.78 | 34.85 ± 6.94 | 37.62 ± 6.5 | 36.78 ± 5.41 | 32.6 ± 8.55 | 35.41 ± 4.61 | 32.58 ± 7.08 | 30.34 ± 7.55 | 0.001 |
Parafoveal DVD | 53.43 ± 3.52 | 55.64 ± 3.25 | 55.49 ± 2.26 | 54.28 ± 3.05 | 54.26 ± 3.3 | 53.05 ± 2.86 | 52.7 ± 2.98 | 52.16 ± 3.73 | 50.32 ± 4.4 | < 0.001 |
Foveal CVD | 73.34 ± 4.05 | 76.75 ± 2.49 | 76.09 ± 2.61 | 75.12 ± 3.3 | 75.55 ± 2.53 | 72.87 ± 3.04 | 71.59 ± 3.78 | 70.28 ± 3.89 | 71.33 (68.37–73.62) | < 0.001 |
Parafoveal CVD | 70.86 ± 4.46 | 70.31 ± 4.8 | 72.16 ± 2.99 | 73.22 ± 4.38 ) | 73.25 ± 3.15 | 71.14 ± 3.09 | 70.01 ± 4.12 | 68.37 ± 4.97 | 67.56 ± 4.43 | < 0.001 |
CVI | 0.7 ± 0.02 | 0.69 ± 0.24 | 0.69 ± 0.03 | 0.7 ± 0.02 | 0.7 ± 0.02 | 0.71 ± 0.02 | 0.7 ± 0.03 | 0.7 ± 0.03 | 0.69 ± 0.03 | 0.225 |
FAZ | 0.27 ± 0.1 | 0.28 ± 0.08 | 0.28 ± 0.11 | 0.23 ± 0.09 | 0.24 ± 0.09 | 0.3 ± 0.13 | 0.26 ± 0.07 | 0.29 ± 0.1 | 0.32 ± 0.12 | 0.016 |