Fig. 1

Staging scheme for epiretinal membranes. a1–c1 Show near-infrared images, a2–c2 display the corresponding SD-OCT scans of ERM stage as proposed by Govetto et al. [4]: a1, a2 stage (1) Mild ERM with few anatomical modifications. The foveal depression is preserved, and all retinal layers are well identified. b1, b2 stage (2) ERM with more advanced anatomical changes. The foveal depression is lost, but all retinal layers are still well defined. c1, c2 stage (3) Continuous ectopic inner foveal layers (EIFL) cover the whole foveal floor. Like in Stage 2 ERMs, the foveal depression is lost, and all retinal layers are well defined. d1, d2 stage (4) Advanced ERM with complete foveal disorganization. Thick EIFLs cover the foveal area, there is no foveal depression, and all retinal layers are disrupted [27]