Fig. 3.

(A)–(C) are the plots of υ versus θ at different points A–C; “+” are the calculated variances, normalized to −1 to 1. The red curve is the cosine function derived from the Eq. (8); the yellow region indicates the phase shift caused by the bulk motion. (A) is the A-line chosen from a point that contains capillaries only; (B) and (C) are chosen from points that contain large vessels. (D) is the en face OCT mean projection of a scan on a rat eye. Positions A–C correspond to plots (A)–(C); the yellow straight line and the blue circle indicate the B-scan used for comparison and the Doppler circular scan position.