Tonometry

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Related to applanation tonometer: tonometry, Schiotz tonometer

Tonometry

 

the measurement of pressure—usually referring specifically to intraocular pressure. All tonometric methods are based on measurement of the eyeball’s capacity for deformation.

The approximate magnitude of intraocular pressure can be estimated by digital tonometry—the examiner making a subjective judgment of the degree of firmness of the eye by pressing it with the fingers. Greater accuracy in tonometry is achieved by the use of tonometers of varying design. Impression tonometry measures the degree of indentation of the eyeball produced by the tonometer rod and translates the reading into measures of intraocular pressure. Applanation tonometry measures the extent to which the eye can be flattened; the imprint (or tonogram) produced by a cylinder’s pressure on the eye is in the shape of a small circle, whose dimensions are converted into an index of pressure.

References in periodicals archive ?
Table 2: Intraocular pressure measured with Goldmann Applanation Tonometer (HAAG-STRIET AT 900, Koeniz Switzerland).
Comparison of the rebound tonometer (TonoVet[R]) with the applanation tonometer (TonoPen XL[R]) in normal Eurasian Eagle owls (Bubo bubo).
Local examination of the eyes was done for lids, eye lashes, conjunctiva, cornea, iris and lens for identification of any adverse drug events, IOP recorded by Applanation tonometer at 10 am [+ or -] 1 hrs.
Pneumatic tonometer will be far better than applanation tonometer to measure the intraocular pressure.
In general, contact tonometry in these cases was performed with either the Schiotz tonometer or the crystal-tipped applanation tonometer.
Tenders are invited for supply of digital slit lamp and imaging module and applanation tonometer
In a study aiming to compare IOP measurements made with the Tono-Pen (TP), Goldmann applanation tonometer (GAT), and non-contact tonometer (NCT) in pediatric patients, Eraslan et al.
Intraocular pressure (IOP) in both groups was measured using gauged Goldmann applanation tonometer (GAT).
Patients with any ophthalmological or general condition, in which IOP could not be recorded using Goldmann Applanation tonometer with significant lenticular and vitreous opacities obstructing optic disc examination and VF analysis, active ocular infections or inflammations with any contraindication for treatment with Atorvastatin (Myopathy and liver disease) and with pregnancy or breastfeeding were not considered for the study.
Effect of central corneal thickness on intraocular pressure with the rebound tonometer and the applanation tonometer in normal dogs.
Intraocular pressure was measured using Goldmann Applanation tonometer on slit lamp.