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Cumulative retardance (A), DOPU (B), and thresholded DOPU at 0.4, projected on top of the log intensity image (C). The threshold marks red DOPU values equal or lower than 0.4. B-scan is from Subject 14, one of the older subjects with high retardance below the RPEBM complex and reaching values up to 180°. These are associated with low-DOPU values (<0.4) in the RPE
