The portable tonometer has evolved significantly since the introduction of digital tonometry in the late 1800s. While digital tonometry by an expert was once considered the most accurate method, mechanical tonometers like the Schiotz tonometer quickly became the new gold standard in the early 1900s.
In the 1950s, Goldmann applanation tonometers were developed, which displaced little fluid and minimized variations in ocular rigidity. These principles laid the foundation for modern electronic and non-contact tonometers.
Today, portable tonometers like the Tono-Pen AVIA from Reichert Technologies offer reliable and accurate readings of intraocular pressure (IOP). The Tono-Pen AVIA is a handheld device that provides precise measurements, making it a practical choice for regular monitoring in both clinical and home environments[.
The evolution of tonometry has been driven by the need for more accurate and accessible IOP measurements. Innovative solutions like dynamic contour tonometry are emerging as potential game-changers, promising more precise IOP readings by elucidating the biomechanical properties of the cornea.
While your choice of tonometer depends on various factors, including the specific clinical circumstances, the intended use (in-office tool or screening device), and the needs of the user. Other portable tonometers, such as smartphone-based devices, are also being developed to maximize access to ophthalmological care, especially in resource-poor regions.
In summary, the evolution of portable tonometers has been driven by the pursuit of precision and practicality in IOP measurements. The Tono-Pen AVIA from Reichert Technologies is a reliable and widely used handheld device, but the "best" tonometer ultimately depends on the specific needs and circumstances of the user. If you need the best in contact and non contact tonometry check out our latest offering.
Reunión virtual con el Dr. Julian Triviño (Colombia)
