Truly portable and easy to use– fits in the hand much better than other handhelds, as accurate as Goldmann.
Still requires self-calibration periodically, batteries are expensive, patients still prefer other methods of tonometry.
Although the AVIA is the best Tono-Pen made, patients still prefer other methods, and it’s not the most efficient procedure.
The Tono-Pen has been around for quite some time and like most staple handheld devices it hasn’t seen much change since its inception. Three different companies have since owned the rights to the Tono-Pen and now with Reichert strongly at the helm their successor is still a Tono-Pen, with basically much of the same technology, with basically the same name, and yet a different shape. It’s true that the AVIA’s transducer is slightly different and less intrusive, and it is true that it’s slightly more accurate, but I think with all that being said you buy the Tono-pen AVIA solely based on its newly designed shape. It’s a shape that sits in the operator’s hand far better than any other handheld tonometer and it somehow seems to defy gravity even at uncomfortable positions. Pictures; even ours- don’t do its curvature justice and the petite structure of the unit makes it incredibly portable and easy-to-use. Still, the AVIA is still very much the Tono-Pen of the past- and your patients won’t notice the boost in comfort for the operator seeming that a metal tip is still pressing down onto their cornea.