Fig. 17.

(a) Combined OCT and fundus imager. (b1) Fundus image revealed blood vessels around the optical nerve head (ONH). (b2) OCT B-scan image of the area marked by the red line in (b1). (b3) Histological image of the frog retina (left) and the corresponding OCT B-scan image with individual layers labeled (right). The red profile shows the averaged density along the layers, i.e., averaged A-scans. The outer segment region is marked in yellow dashed rectangles in both the histological image and OCT B-scan image. The OCT B-scan image contains both hyperreflective and hyporeflective bands. The B-scan image is displayed in a linear scale. NFL: nerve fiber layer, IPL: inner plexiform layer, INL: inner nuclear layer, OPL: outer plexiform layer, ELM: external limiting membrane, ISe: inner segment ellipsoid, IZ: interdigitation zone, RPE/BrM: retinal pigment epithelium/Bruch’s membrane. Scale bars indicate $100\mu \mathrm{m}$. Reprinted with permission from Ref. 130.