Fig. 2
From: Differences in choroidal responses to near work between myopic children and young adults
Illustration of choriocapillaris perfusion analysis. a Optical coherence tomography angiography (OCTA) scan region of nominally 3 mm × 3 mm, centered on the fovea. b Magnified en face OCTA choriocapillaris image within a 2.5 mm diameter circle, which was centered on the fovea through examining (c) vertical and (d) horizontal meridian scans across the fovea and was segmented as a 20 µm thickness slab below Bruch’s membrane (BM). SER,  spherical equivalent refraction; AL,  axial length