The choroidal thickness map of a 57-year-old normal male obtained using SS-OCT.

<p>The 3D raster scan protocol with 512A-scans ×256 B-scans was used to obtain the 3D imaging data for a 6×6-mm area. (A) The black arrow shows the central sector choroidal thickness as measured on the ETDRS grid within a 1×1-mm circular area. (B) The choroidal thickness values presented by the 6×6 rectangular grid map. Each value shows the mean choroidal thickness within a 1×1-mm square area. (C) Manual segmentation of the chorioscleral interface on the B-scan image. All 64 B-scan images were obtained for each subject.