title: Pressure to measure pressure: the McLean Tonometer.
authors.forename: Richard
authors.initials: R
authors.lastname: Keeler
authors.forename: Arun D
authors.initials: AD
authors.lastname: Singh
authors.forename: Harminder S
authors.initials: HS
authors.lastname: Dua
mesh_terms: D049672:History, 19th Century; D007429:Intraocular Pressure; D009885:Ophthalmology / Q000266:history*; D014065:Tonometry, Ocular / Q000266:history* / Q000295:instrumentation