title: S.I. units in ophthalmological practice.
abstract: The introduction of S.I. units internationally means that an adaptation of the use of certain units in ophthalmological practice will have to be considered. This has important consequences, especially for the measurement of intra-ocular pressure. A survey is given and some suggestions are made for the practical use of an adapted unit for intra-ocular pressure measurement.
mesh_terms: D006801:Humans; D007394:International System of Units; D007429:Intraocular Pressure; D008027:Light; D009426:Netherlands; D009885:Ophthalmology / Q000295:instrumentation*; D011312:Pressure; D014894:Weights and Measures