Tonometry is the procedure eye care professionals perform to determine the intraocular pressure, the fluid pressure inside the eye. It is an important test in the evaluation of patients at risk from glaucoma. Most tonometers are calibrated to measure pressure in millimeters of mercury.


The Canon TX-20 Full Auto Tonometer easily measures Intraocular Pressure (IOP) allowing doctors to perform simple eye exams efficiently, while enhancing patient comfort with a soft air puff. The advanced intelligent 3D fully automated operation makes operating the instrument extremely simple; just press the button. The TX-20 will align and measure extremely fast, even the print-out and paper cut off are done automatically, reducing examination time. This test is important in evaluating ocular conditions that affect the pressure inside of an eye, such as Glaucoma.

  • Fully Automatic Non Contact Tonometer
  • Advanced intelligent 3D alignment system
  • Reliable results
  • Enhanced patient comfort
  • Compact and sleek instrument
  • Excellent ergonomics
  • Multifunctional joystick
  • Fast built-in printer
  • Extended connectivity
  • Upper and low IOP warnings

The TX – 20P is a Non Contact Tonometer combined with a Pachymeter. The TX-20P is a multi-functional ophthalmic instrument that measures IOP and Central Corneal Thickness and then automatically calculates the corrected IOP.