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What is a tonometer?

A tonometer is an instrument used to measure the intraocular pressure, or pressure within the eye. This instrument is used first to screen for glaucoma. The doctor will numb your eyes and then will use a tonometer to measure pressure. The tonometry process is painless.

Continue Learning about Glaucoma Diagnosis

Is tonometry an effective screening test for glaucoma?
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In tonometry, a device (a tonometer, such as the air puff device) measures intraocular pressure ...
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What are screening tests for glaucoma?
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Three tests are commonly available to screen for glaucoma: tonometry, ophthalmoscopy, and perimetry....
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What is pachymetry?
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Is ophthalmoscopy an effective screening test for glaucoma?
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In ophthalmoscopy, a healthcare provider uses a viewing instrument (an ophthalmoscope) to look d...
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.