Goldmann prisms

High-quality prisms with superb optical clarity

Haag-Streit offer 2 high-quality prism options for use in tonometry.  Tonosafe is a safe, accurate and easy-to-use disposable prism which avoids the need for time-consuming disinfection.  The prisms offer superb optical clarity and have been specifically designed for use with Goldmann and Perkins-style tonometers.  The handmade Goldmann reusable prisms are renowned for their excellent optical quality and accuracy, which allows for reliable and consistent measurements.

Goldmann prisms

Excellent optical quality

The reusable Goldmann measuring prisms are distinguished by their optical and mechanical performance which allows for fast and reliable measurements in daily practice. They are largely handmade by experienced workers, and are checked for tight tolerances in weight, optical quality, durability and for consistent measurement results.

Goldmann Prisms

Handmade precision

Goldmann tonometer prisms are manufactured at Haag-Streit in a process that has been fine-tuned over years. Experience, professional workmanship and intensive quality checks ensure highest precision for this important part of a diagnostic instrument that has become the gold standard for IOP measurement.


Simple & safe disinfection

For efficient disinfecting routines we recommend Haag-Streit Desinset. This instrument set is ideal for disinfection of reusable tonometer measuring prisms and comprises cleaning- and storage container.


FLUO 900

FLUO 900* are sterile, individually-wrapped ophtalmic strips which are impregnated with Fluorescein Sodium dye. They are used for evaluating contact lens fitting.

*FLUO 900 is not available in the USA and Canada