title: 50th anniversary of Ridley's pioneering procedure.
authors.forename: D P
authors.initials: DP
authors.lastname: Choyce
mesh_terms: D002387:Cataract Extraction / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D007910:Lenses, Intraocular / Q000266:history*; D006113:United Kingdom