CATS Tonometer Prism

CATS Tonometer Prism


A breakthrough in IOP accuracy, the CATS Tonometer Prism™ establishes a new standard in reliable Goldmann IOP measurement.

The FDA cleared, patented CATS Tonometer Prism™ instantly delivers 94% improved IOP accuracy for the majority of the population based upon peer reviewed research (see for 7 peer-reviewed studies). Designed to seamlessly integrate into a clinician’s practice with no additional cost, no new training …while helping you significantly streamline patient care.

Cats Tonometer

SPOTLIGHT ARTICLE: Glaucoma Physician, December 2019: Product Spotlight: Taking Tonometry Into the 21st Century - New prism is 94% more accurate than the legacy method    >>>READ MORE



The CATS Tonometer Prism™ (Correcting Applanation Tonometer Surface) is the first innovation in applanation prism technology in 60 years. Rigorous and consistently repeatable clinical tests have proven that the CATS Tonometer Prism™ brings significantly more accuracy to Intraocular Pressure (IOP) measurements than the legacy Goldmann Applanation Tonometer (GAT) IOP prisms. The CATS Tonometer Prism™ has an innovative concave-convex prism surface that captures critical central corneal thickness (CCT), corneal hysteresis, tear film and corneal curvature data to provide more accurate IOP measurements.

Manufacturer SKU: CATS-R
Additional SKUs: CATS


• More accurate results (94% improvement for at-risk patients) based on scientific studies - see for 7 peer-reviewed studies
• Integrates seamlessly with all existing Goldmann type tonometers by simply replacing the GAT with the CATS prism
• Maintain existing clinician measurement technique and patient throughput
• Perfect for all patient populations and all eye care clinicians
• Ergonomic design for increased clinical functionality 


  • SKU package dimensions:   5.75" (W) x 2.25" (D) x 0.625" (H)
  • SKU Weight: .08 lbs
  • Country of Origin:  USA