IOP is considered one of the “eye vital signs” and should be measured in every patient with an eye complaint or in whom the clinician suspects glaucoma - Gavin Gorrell


image by: Tonywirthlin

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How to use the Reichert Tono-pen AVIA

  1. Put on the protective cover. Make sure not to make it too tight or too loose.
  2. Press the blue button once. You will hear one beep. The green light will turn on and the screen will show a series of dashed lines in the bottom right corner.  
  3. Hold the Tono-pen perpendicularly to the corneal surface. Tap gently and try to avoid wild variations in the pressure you apply between taps. For each tap that is recorded, a number will appear in the bottom right corner. You need 10 in total. The larger number is your pressure reading. The smaller number is your confidence interval. 

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 How to use the Reichert Tono-pen AVIA

Having trouble getting accurate readings with the Tono-pen? Try calibrating it before using.


Tonometer Diaton allows to measure intraocular pressure over upper eyelid with no contact with cornea and without use of drops.


iCare tonometers use a patented rebound technology for quick and reliable intraocular pressure (IOP) measurements.


An award-winning ergonomic design, long life battery good for thousands of measurements, statistical confidence indicator, and now Quick-Tap® Measurement Mode, make it the most advanced Tono-Pen® yet. The one you trust in tonometry.

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