Fig. 2.

Outer retinal flow detected five months prior to clinical diagnosis of retinal angiomatous proliferation (RAP).

(A) 3 × 3 mm projection-resolved optical coherence tomography (PR-OCTA) showing a single vessel that was slightly dilated and brighter compared to surrounding deep capillary plexus (B) Conventional OCTA does not clearly depict whether flow is associated with the pigment epithelial detachment (PED) due to extension of tail artifact to the PED (C) Cross-sectional PR-OCTA, in contrast, clearly detected flow in the outer retina associated with the very small PED. (D) Flow was confirmed on thickened perpendicular cross-sectional OCTA composed of 10 axial cross-sectional frames, corresponding to frames between the blue lines in (A). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)