Quick Start

For Improved IOP accuracy and mires brightness:

  • Set the slit lamp illumination to 45 degrees
  • Start with the tonometer dial at 5mmHg
  • Proceed with IOP measurement


  • Unlike GAT, the CATS® Tonometer Prism will present distorted mires to alert user when the tip is not centered.
  • After slit lamp adjustment, the CATS® Tonometer Prism mires will appear normal and round, ensuring accurate IOP measurement.

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