Terashima H, Okamoto F, Hasebe H, et al. - In the present study, the researchers sought to assess the postoperative visual function utilizing a preoperative epiretinal membrane (ERM) classification based on the status of the inner layer structure. The authors examined 62 eyes, one from each patient undergoing vitrectomy with an internal limiting membrane peeling for unilateral ERM. Patients with preoperative ERM morphology with no disruption of the inner retinal layer in group A (37 eyes) and those with disruption in group B (25 eyes) were included. At 12 months, group A's visual acuity improved more than group B's. After vitrectomy, ERM that has preoperatively disrupted the inner layer increases the risks of central visual-field sensitivity decline and micro-scotoma formation. In determining retinal function in ERM, evaluating the inner layer could be an important prognostic factor.