title: Ophthalmic surgery, local anaesthesia and supplemental oxygen.
authors.forename: M D
authors.initials: MD
authors.lastname: Tidmarsh
authors.forename: A E
authors.initials: AE
authors.lastname: May
mesh_terms: D004867:Equipment Design; D006801:Humans; D008397:Masks; D013508:Ophthalmologic Surgical Procedures / Q000295:instrumentation*; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation*