Classification of image artefacts in optical coherence tomography angiography of the choroid in macular diseases.

Background: To evaluate and classify image artefacts in optical coherence tomography (OCT) angiography (OCTA) of the choroid in a group of patients with macular diseases.

Design: Retrospective observational study.

Participants: Five patients with age-related macular degeneration, three with central serous retinopathy, one with polypoidal choroidal vasculopathy and one with multiple evanescent white dot syndrome.