An 84-year-old man underwent vitreoretinal surgery for an epiretinal membrane (ERM). His decimal best-corrected visual acuity was 0.7 (20/32) OD (Figure, A). During surgery, both the ERM and internal limiting membrane (ILM) were peeled in 1 continuous piece. The firmness of the ERM was judged normal with no engagement sites.
One day after the surgery, a white lesion appeared in the peeled area (Figure, B). This lesion was hyperreflective across all layers in the optical coherence tomographic images, with normal retinal circulation on fluorescein angiography (Figure, B), and the patient developed degeneration of the inner and outer retinal layers. The white lesion gradually blended into the surrounding normal tissue, but the border remained throughout the follow-up period. The postoperative best-corrected visual acuity improved to 0.9 (20/25) OD, although he reported a circular visual field defect.