LOINC long common name : PhenX - intraocular pressure protocol 110701;
LOINC short name : Intraocular pressure proto;
LOINC description : Intraocular pressure (IOP) is measured using the TONO-PEN XL instrument. The cornea
is prepared by introducing one drop of anesthetic onto the surface of the eye and
the TONO-PEN is used to obtain four valid IOP measurements. The instrument calculates
an average and the examiner records the average. The instrument also provides the
reliability level of the measurement. Only those readings that have a 5% variability
level are recorded as they are considered to be accurate. This protocol uses TONO-PEN
to measure intraocular pressure. This instrument has the advantages of portability
and is relatively easy to use. Other hand-held instruments can be used to measure
intraocular pressure. If other instruments are used, the reproducibility of the measurements
should be comparable to those acquired with this protocol. In addition, when other
instruments are used to collect these measurements, the manufacturer and model of
equipment should be recorded. These other devices may require some different steps
than are described in this protocol. Investigators should follow the equipment manufacturer's
instructions to ensure quality control.;
Has component