Lamellar keratoplasty in corneal ectasias.
D000208:Acute Disease; D000367:Age Factors; D003261:Contact Lenses; D016039:Corneal Transplantation; D006801:Humans; D007640:Keratoconus / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D008722:Methods; D013997:Time Factors; D014184:Transplantation, Homologous; D014785:Vision, Ocular