label: Retrocorneal membrane
label_lc: retrocorneal membrane
description: A retrocorneal membrane is an abnormal, fibrous or cellular tissue layer that forms on the posterior surface of the cornea, typically on or adjacent to the Descemet membrane. It may result from trauma, surgery (e.g., penetrating keratoplasty), inflammation, or endothelial cell dysfunction, and can lead to visual impairment depending on its density and extent.