retinal disorder proliferative vitreoretinopathy https://github.com/monarch-initiative/mondo/issues/4259 MONDO:0700115 UMLS:C0242852 SCTID:232016005 Vitreoretinal membrane shrinkage or contraction secondary to the proliferation of primarily retinal pigment epithelial cells and glial cells, particularly fibrous astrocytes, followed by membrane formation. The formation of fibrillar collagen and cellular proliferation appear to be the basis for the contractile properties of the epiretinal and vitreous membranes. MEDGEN:66167 icd11.foundation:1908429642 MESH:D018630