Allen-Schiotz Tonometer

w/ 3 weights (5.5, 7.5 & 10.0 grams), plunger, footplate & test block Allen-Schoitz Tonometer is a unique tool used in a variety of ophthalmologic procedures. The tool may be used to estimate the scleral rigidity or the resistance to stretch of the outer tunic of the eyeball. The resistance is measured using the three different weights provided combined with an atraumatic footplate.