Reichert Technologies®, a unit of AMETEK’s Ultra Precision Technologies Division, is pleased to announce its exclusive partnership with CATS Tonometer, LLC to distribute the CATS™ Reusable Tonometer Prism in the United States. The patented CATS™ Tonometer Prism represents a breakthrough in intraocular pressure (IOP) accuracy over the traditional Goldmann prism.

“For decades, Goldmann Applanation Tonometry (GAT) IOP measurement errors have been well known to the clinician community,” says Sean McCafferty, MD, FACS, and CEO of CATS Tonometer, LLC. “We believe the CATS™ Tonometer Prism will rapidly become the new standard of care and greatly improve the recognition and treatment of ocular disease.”

Traditional Goldmann tonometer prisms work by applanating or “flattening” the cornea. This amplifies intracorneal stress during the measurement process and can also create subjectivity when placed on the cornea. Sub-optimal positioning delivers sub-optimal IOP measurements.

The CATS™ Tonometer Prism was uniquely designed with an innovative and patented dual-curved surface that “cups” the cornea and effectively nullifies IOP measurement errors caused by corneal biomechanics and corneal thickness.1 The CATS™ Tonometer Prism also features a rolled outer edge that minimizes the tear film adhesion, which plagues traditional Goldmann prisms.1

“The CATS™ Tonometer Prism provides a more accurate IOP assessment, sparing patients and clinicians from the damaging consequences of over and under estimation of IOP,” said Nathan Radcliffe, MD, a leading glaucoma specialist practicing in NYC.

Seamless integration into any existing Goldmann or Perkins tonometer allows doctors to easily transition from the traditional Goldmann prism to the CATS™ Tonometer Prism with no additional training or downtime.

“The partnership with CATS Tonometer, LLC is a perfect fit for Reichert®,” states Ian Lee-Bennett, Reichert Technologies® Division Vice President and Business Unit Manager. “The CATS™ Tonometer Prism expands our world-leading tonometry portfolio and builds upon our biomechanically compensated IOP devices, including the Ocular Response Analyzer® (ORA) and the Reichert® 7CR.”

Since IOP is such a critical metric for assessing the ocular health of a patient, the CATS™ Prism has the potential to greatly enhance clinical care through a reduction in errors related to IOP measurements.1

To learn more about CATS™ Tonometer Prism visit

1 - Goldmann and error correcting tonometry prisms compared to intracameral pressure. McCafferty S, Levine J, Schwiegerling J, Enikov ET. BMC Ophthalmol. 2018 Jan 4;18(1):2.?

About Reichert Technologies®
Reichert Technologies®, based out of Buffalo, New York, is a global leader in designing, engineering, and manufacturing high-quality diagnostic devices and equipment for ophthalmologists, optometrists, opticians, and retail eye centers.

Inventor of Phoroptor®, Lensometer®, and the Non-Contact Tonometer, Reichert continues a 180 year tradition of providing American innovation with the digital Phoroptor® VRx, Tono-Pen® Tonometer, ClearChart® Digital Acuity Systems, and Ocular Response Analyzer®, a break-through in glaucoma diagnosis and management, featuring Corneal Hysteresis and IOPcc.

Reichert Technologies® is a business unit of the Ultra Precision Technologies Division of AMETEK, Inc. a leading global manufacturer of electronic instruments and electromechanical devices with annual sales of approximately $5 billion.

About CATS Tonometer LLC
CATS Tonometer LLC is a privately held company located in Tucson, Arizona, specializing in engineering optical and ophthalmic innovations to drive better ocular disease treatment. For more information and research materials, please visit