A Tonometer feem ntau yog tsim los ntawm lub pob txha pob txha hloov lub tshuab hluav taws xob, lub pob txha deformation ntsuas qhov system lossis tiv tauj lub pob muag khoom thiab lub siab hloov pauv.Siv los ntsuas qhov siab intraocular.Cov khoom lag luam yog tonometer, non-hu tonometer, handheld tonometer, handheld applanation tonometer, applanation tonometer, hu rau piezoelectric tonometer, rebound tonometer, Indentation tonometer, thiab lwm yam. Nws tuaj yeem pab kuaj mob cataracts, glaucoma thiab lwm yam kab mob qhov muag.Lub tonometer tsis sib cuag yog feem ntau siv tam sim no, uas muaj qhov zoo ntawm kev ua haujlwm yooj yim thiab ntsuas nrawm.