Ask an Eye M.D. Answer Archive

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Question:
Is it possible to get an eye pressure measuring device for the home that will not make direct contact with the eye?  

Answer:
There are techniques for measuring the eye pressure without directly contacting the eye. These techniques are referred to as "non-contact tonometry." 

The most common form of non-contact tonometry is air puff tonometry, which uses a rapid air pulse released from the tip of the device which rebounds from the cornea, allowing an estimation of the pressure inside the eye. These devices have relatively good correlation with standard techniques of measuring the pressure that does actually contact the front of the eye. 

There are other techniques that can estimate the eye pressure through the eyelid. With this technique the patient looks for a characteristic light reflex in their side vision when the device is pressed against the eye through the lid in order to estimate the pressure. There are some concerns about the accuracy of this technique. 

A more important question is how these eye pressure measurements obtained at home will be utilized. It is important to discuss with your Eye M.D. what value and insights might be obtained from these home eye pressure readings in the management of your glaucoma.

Answered by: Louis B. Cantor, MDDr. Louis B. Cantor

Categories: GeneralGlaucoma

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Answered: Sep 18, 2012

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