Goldmann applanation tonometry has been the gold standard in tonometry for many decades. It is based on the Goldmann principle—tried and tested during more than 50 years of usage with millions of patients.

The device is mounted permanently on the microscope arm. It provides a parking position and can be easily placed into working position. The measurement is obtained through the right eyepiece.

Our device fits the Haag-Streit BI 900 and BM 900 slit lamps, as well as many third party models. Mounted on top of the microscope, it can be left on the slit lamp permanently as it provides a parking position and can be easily swiveled into working position. The measurement is obtained through the right eyepiece.

Mounted on a guiding platform placed over the slit lamp axis: the tonometer is placed on the slit lamp only when applanation tonometry is performed. The instrument can be moved between two positions for observation through the right or left eyepiece.

The AT 870 is mounted permanently on top of the slit lamp microscope. The feeler arm protrudes from above into the beam path of the microscope and illumination unit.  If the feeler arm is swivelled into the park position, the slit lamp can be used immediately for the examination. The applanated surface is observed monocularly through the left eyepiece of the stereo microscope.

The Goldmann applanation tonometer has been tried and tested for over 65 years. Since then, over 900* studies have been published, proving the reproducibility and accuracy of the instrument.

*Based on a PubMed search, May 16, 2023. Based on Keyword “Goldmann” and “applanation tonometer.”

Our sustainable Goldmann measuring prisms are reusable and are characterized by their excellent optical and mechanical performance, enabling fast and reliable IOP measurement in daily practice. The prisms are produced in Switzerland with manufacturing standards of the highest level.

Tonosafe is a Haag-Streit UK single-use tonometer prism and avoids the need for time-consuming and laborious cleaning. It effectively reduces the risk of cross infection, even in the most demanding scenarios. Calibrated to Goldmann standards, Tonosafe delivers accurate results with all Goldmann tonometers. 

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