LOINC long common name : Deprecated PhenX measure - intraocular pressure;
LOINC description : Procedure for the measurement of intraocular pressure (IOP) using the TONO-PEN XL
Applanation Tonometer. TONO-PEN is a registered trademark Reichert, Inc. This procedure
is used to measure intraocular pressure (IOP). An elevated IOP can be dangerous because
people with varying degrees of IOP elevation may develop damage to the optic nerve.;