title: Retrograft membranes in penetrating corneal transplants.
mesh_terms: D000368:Aged; D000867:Anterior Chamber; D016039:Corneal Transplantation; D005128:Eye Diseases / Q000209:etiology / Q000517:prevention & control; D006801:Humans; D007640:Keratoconus / Q000601:surgery; D008297:Male; D008566:Membranes; D011183:Postoperative Complications; D013997:Time Factors; D014184:Transplantation, Homologous; D014792:Visual Acuity