tonography (redirected from carotid compression tonography)

tonography /to·nog·ra·phy/ (to-nog´rah-fe) recording of changes in intraocular pressure due to sustained pressure on the eyeball.

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carotid compression tonography  a test for occlusion of the carotid artery by measuring ocular pressure and pulse before, during, and after the proximal portion of the carotid artery is compressed by the fingers.

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to·nog·ra·phy (t-ngr-f)

n.

Continuous measurement of intraocular pressure to determine the facility of aqueous outflow, used to determine the presence of glaucoma.

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tonography

[tōnog′rəfē]

1 the measurement over time of intraocular pressure with graphic documentation.

2 the measurement of tension.

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tonography [to-nog´rah-fe]

the recording of changes in intraocular pressure due to sustained pressure on the eyeball.

carotid compression tonography a test for occlusion of the carotid artery by measuring ocular pressure and pulse before, during, and after the proximal portion of the carotid artery is compressed by the fingers.

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tonography

the recording of changes in intraocular pressure due to sustained pressure on the eyeball.

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carotid compression tonography

a test for occlusion of the carotid artery by measuring ocular pressure and pulse before, during, and after the proximal portion of the carotid artery is compressed by the fingers.

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tonography 

Technique for measuring the facility of outflow of aqueous humour from the eye under the continuous pressure exerted by the weight of a tonometer over a given period of time. The instrument usually employed for tonography is an electronically recording Schiötz tonometer. In this technique, the pressure is continuously recorded over a four-minute period and the outflow is deduced by utilizing a specifically designed diagram, called a nomogram (which is a graphical representation of one, or more, mathematical relationships whereby the desired value may be found without calculation by placing a straight edge across the diagram). The results of tonography can indicate the presence of established glaucoma, although the technique is not very reliable for borderline cases.