The Used Topcon CT-80 Non-Contact Tonometer Features: Innovative Dual Sensor System New Alignment Bar Improved Air Cylinder Triple Patent Safety Function Built-In Printer Internal Fixation Target Innovative dual sensor system for accurate measurements Triple patient safety function New alignment bar & improved air cylinder reduces the interval time between measurements by 30% Built-in printer Fast, easy and accurate intraocular pressure readings Internal fixation target Auto alignment Auto measurement