Ophthalmic Handheld Intraocular Pressure IOP Measuring Rebound Tonometer Rebound Tonometer is used to measure intraocular pressure, there are two working modes: vertical and horizontal. Wireless date output the principle: when the probe contact the surface of different hardness at a certain speed, it has different reaction of the probe rebounding. Advantage: high accuracy, portable, without anesthesia, without the cross-infection etc. Easy to use, Small size, Easy to carry, No need Anesthesia, No Discomfortableness Technical Specifications Protable name Rebound Tonometer Measuring range 3mmHg-70mmHg Measurement error ±1.5mmHg Measurement Both vertical and horizontal measurement Output Wireless Infrared Thermal Printer