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Especially since the incorporation of swept laser sources, optical coherence tomography angiography (OCTA) has enabled quantification of choriocapillaris perfusion. A critical step in this process is binarization, which makes angiographic images quantifiable in terms of perfusion metrics. It remains challenging to have confidence that choriocapillaris perfusion metrics reflect the reality of pathophysiologic flow, largely because choice of binarization method can result in significantlydoi:10.1167/tvst.9.8.44 pmid:32855890 pmcid:PMC7422830 fatcat:a4hxblkwive25ix2vrbcnjgfa4