[Regression of idiopathic epiretinal membrane-Case report and consideration of the possible mechanism].

In the presence of a symptomatic epiretinal gliosis, pars plana vitrectomy with membrane peeling to remove the membrane is usually indicated in clinical practice. According to common clinical experience, almost no independent regression of such an epiretinal membrane and thus healing of the pathology alone exists. Therefore, the unusual case of bilateral independent regression of idiopathic epiretinal gliosis and formation of a lamellar macular hole in a 73-year-old male patient is described. Considerations of the possible mechanism are presented based on the existing literature. These include separation of inflammatory versus noninflammatory membranes, possible separation of individual layers depending on the status of the posterior vitreous limiting membrane and also the possible action of proteolytic systems in the posterior vitreous region. Finally, the question arises, whether patients have to be informed about this fact before possible surgery.