tonometry

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tonometry

 [to-nom´ĕ-tre]
measurement of tension or pressure, e.g., intraocular pressure.
digital tonometry estimation of the degree of intraocular pressure by pressure exerted on the eyeball by the finger of the examiner.
gastric tonometry monitoring of the gastric intramucosal pH to obtain early indications of inadequate tissue oxygenation; the sensitive nature of the mucosa allows for monitoring of metabolic changes produced by hypoxia well in advance of the other more common indices of hypoxia.

to·nom·e·try

(tō-nom'ĕ-trē),
1. Measurement of the tension of a part, for example, intravascular tension or blood pressure.
2. Measurement of ocular tension.

tonometry

/to·nom·e·try/ (-ĕ-tre) measurement of tension or pressure, particularly intraocular pressure.
digital tonometry  estimation of the degree of intraocular pressure by pressure exerted on the eyeball by the examiner's finger.

tonometry

[tōnom′ətrē]
the measuring of intraocular pressure by determining the resistance of the eyeball to indentation by an applied force. Several kinds of tonometers are used. The air-puff tonometer, which does not touch the eye, records deflections of the cornea from a puff of pressurized air. The Schiötz impression and the applanation tonometers record the pressure needed to indent or flatten the corneal surface. Applanation tonometry at the slit lamp is considered most accurate. Schiötz tonometry is rarely done today.

tonometry

Blood gases See Blood gas analysis Ophthalmology A technique that measures intraocular pressure–normal is ≤ 20 mm Hg by contact–indentation of, or applanation on or noncontact–by a puff of air on the outer part of the eye Indications Diagnose and manage glaucoma, ocular HTN, and in routine ocular examination.

to·nom·e·try

(tō-nom'ĕ-trē)
1. Measurement of the tension of a part (e.g., intravascular tension or blood pressure).
2. Measurement of ocular tension.

tonometry

(tō-nom′ĕ-trē) [ tono- + -metry]
Enlarge picture
TONOMETRY: Measuring intraocular eye pressure
The measurement of tension of a part, as intraocular tension, used to detect glaucoma. See: illustration

analytical tonometry

A technique formerly used in blood gas analysis in which the liquid blood sample and its gas are held at equilibrium and the partial pressures of oxygen and carbon dioxide are measured.

applanation tonometry

Determining intraocular pressure by measuring the force necessary to flatten the corneal surface.

digital tonometry

Determining intraocular pressure by use of the fingers.

gastric tonometry

Measurement of the partial pressure of carbon dioxide (Pco2) in the stomach of critically ill patients to determine how well the stomach and other internal organs are perfused with blood and oxygen. Poor gastric perfusion is found in more severe conditions, i.e., those that carry an increased risk of death.

noncontact tonometry

Determining intraocular pressure by measuring the degree of indentation of the cornea produced by a puff of air.

tonometry

Measurement of the pressure of the fluid within the eye.

Tonometry

The measurement of pressure.
Mentioned in: Glaucoma

tonometry 

Measurement of intraocular pressure with a tonometer. See intraocular pressure; tonometer.

tonometry

measurement of tension or pressure, e.g. intraocular pressure. See also tonometer.

digital tonometry
estimation of the degree of intraocular pressure by pressure exerted on the eyeball by the finger of the examiner.