Malfunction of outer retinal barrier and choroid in the occurrence and progression of diabetic macular edema

Figure 3 Normal optical coherence tomography aspect of the retinal layers. Segmentation software automatically marked the 10 retinal layers. (ILM: Internal limiting membrane; RNFL: Retinal nerve fiber layer; GCL: Ganglion cell layer; IPL: Inner plexiform layer; INL: Inner nuclear layer; OPL: Outer plexiform layer; ONL: Outer nuclear layer; ELM: External limiting membrane; PR/EZ: Photoreceptor layer/ellipsoid zone (inner and outer photoreceptor segment junction; RPE: Retinal pigment epithelium).