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(A)-(D) En face vascular imaging of the whole retina for different D0 (0.05, 0.1, 0.2, 0.4) while n = 1; (E)-(H) En face vascular imaging of the retina for different n (0.5, 1, 2, 3) while D0 = 0.1. The error bar in (A) indicates 500 μm.