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.

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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.