Tonometry

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Related to Applanation Tonometry: tonometer, acoustic neuroma

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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 ?

In order to define the factors leading to the observed reduction in arterial stiffness, we carried out multiple regression analysis in which we determined the effect on the arterial stiffness index (carotid-femoral PWV) other changes observed in the study group such as office SBP, office DBP, BMI, Serum ADMA concentration, microalbuminuria, hs-CRP and applanation tonometry indices.

The influence of regular aerobic interval training on blood pressure and arterial stiffness amongst hypertensive subjects

Comparison of dynamic contour tonometry and goldmann applanation tonometry in African American subjects.

Intraocular pressure measurements by three different tonometers in children with aphakic glaucoma and a thick cornea

Hendrickson, "Intraocular pressure decrease after local ocular cooling is underestimated by applanation tonometry," International Ophthalmology, vol.

Hypobaric hypoxia: effects on intraocular pressure and corneal thickness

To measure the augmentation index (AIx), an ascending aortic pressure waveform was derived from the radial artery waveforms recorded at the wrist using applanation tonometry with a high-fidelity micromanometer.

Relationship between aortic valve sclerosis and different vascular damage markers: an observational study/Aort kapak sklerozu ile damarsal hasari gosteren farkli parametreler arasindaki iliski: Gozlemsel bir calisma

IOP, as measured by Goldman applanation tonometry, was 19 mmHg OD and 19 mmHg OS.

Herpetic keratitis in a patient who used two different prostaglandin analogue ophthalmic solutions: a case report

In applanation tonometry, you are given drops to numb your eye, and a pressure-sensitive tip is placed against the eye to measure its pressure.

Glaucoma; Diagnosis

All methods of applanation tonometry, both noncontact and contact, obey the Imbert-Fick law, [9-10] which states that the force required to applanate the cornea is proportional to the IOP.

Glaucoma screening in primary care: the role of noncontact tonometry

Intraocular pressure measured by applanation tonometry was 13 mmHg in the right eye and 12 mmHg in the left eye.

Sectoral Ciliary Body Agenesis Complicated with Cataract Formation Diagnosed by Ultrasound Biomicroscopy

* IOP measurement in primary care should be performed using Goldmann-type applanation tonometry.

Shared care glaucoma: a solution or a problem?

In routine ophthalmology practice, the fundus is used for fluorescein angiography, applanation tonometry, epithelial defect staining, and tear breakage time [9-11].

Effect of Proparacaine 0.375%-Sodium Fluorescein 0.25% Eye Drop Mixture and Fluorescein Strip on Anterior Segment Parameters

Mean tear production was 7.4 [+ or -] 3.27 mm/min, and mean intraocular pressure measured via applanation tonometry was 10.5 [+ or -] 3.15 mm Hg.