Fig. 1
From: Differences in choroidal responses to near work between myopic children and young adults
Illustration of choroidal vasculature analysis. a Schematic diagram of structural optical coherence tomography (OCT) imaging of the macular region with 6 radial scan lines centered on the fovea. b, c Overlays of binarized choroidal areas on original images in vertical (b) and horizontal (c) meridian. The 6-mm wide submacular area between white vertical lines, centered on the fovea, was used for analysis. The yellow vertical line represented the subfoveal choroidal thickness (SFCT). SER,  spherical equivalent refraction; AL,  axial length