Figure 4.

Representative images show imaging artefacts using wide-field OCTA. (A) Small red circle (ROI) shows a displacement artefact. Enlargement of ROI represented by the large red circle shows discontinuous blood vessels. (B) Small red circle shows a shadowing artefact and corresponding enlargement of region of interest where an attenuation of the signal with loss of contrast can be seen. (C) White line artefact shown within red oval. Enlargement (insert) shows erroneously appearing lines (in this case a white horizontal line resembling a vessel; D) Vessel doubling artefact denoted by the red circle. Enlargement of this region (large red circle) shows that the same blood vessel appears twice in the image.