... tonometer 1.Portable 2.Without the cross-infection and anesthesia 3.Wireless output print data. Rebound Tonometer HE-500 ... rebounds. Be of advantages of high accuracy, portable, without anesthesia, without the cross-infection etc. Measuring Range: 3mmHg~70mmHg ... to learn, easy to use Lightweight and handy No anesthesia, avoiding discomfort reaction Rebound tonometer, portable tonometer , ophthalmic ...