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Process for measuring foveal pit volume. (A) Retinal thickness maps were exported and interpolated to 512 × 512 pixels and then transformed to polar coordinates. (B) The foveal rim was defined as described in the text. An irregular surface was defined as described in the text to create a cap on the foveal pit. (C) The fill of the space between this cap and the internal limiting membrane represents the volume of the foveal pit.
