Source:http://linkedlifedata.com/resource/umls/id/C0687419
SPN: A tonometer and accessories is a manual device intended to measure intraocular pressure by applying a known force on the globe of the eye and measuring the amount of indentation produced (Schiotz type) or to measure intraocular tension by applanation (applying a small flat disk to the cornea). Accessories for the device may include a tonometer calibrator or a tonograph recording system. The device is intended for use in the diagnosis of glaucoma.,UMD: Graphic recorders incorporated in tonometers for recording the gradual changes in intraocular pressure. These devices consist of the tonometer probe or plunger and the electric unit to collect intraocular pressure (IOP) signals, to change them into electronic signals, and to record the IOP waveforms on the graphic paper. Some recorders are compatible with personal computers for waveform storage and analysis. The devices are used to facilitate the diagnosis and evaluation of glaucoma.