The retinal vasculature consists of a superficial vascular plexus (SVP), an intermediate capillary plexus (ICP), and a deep capillary plexus (DCP). There is also a fourth regional vascular network, the radial peripapillary capillary plexus (RPCP). The RPCP runs in parallel with the nerve fiber layer, the SVP is located within the ganglion cell layer and the deeper plexuses, and the ICP and DCP are above and below the inner nuclear layer, respectively. The SVP receives a blood supply from the central retinal artery and the deeper vascular layers are supplied by vertical anastomoses from the SVP.1
Papakostas TD, Kiss S. Optical Coherence Tomography Angiography to Evaluate Ischemia in Diabetic Eyes. JAMA Ophthalmol. 2018;136(8):936–937. doi:10.1001/jamaophthalmol.2018.2256
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