DEVICE FOR ASSESSING RIGIDITY OF CORNEA

摘要

A device for assessing the rigidity of the cornea contains the frame shaped as the arch with two ledges flexed at the right angle at the ends of the arch and the hinged angles. Each angle contains the handle with the axis for the balanced lever ended with the hinged ring capable of being applied tightly to the surface of the patient's head without pressure independently of the position and the size of the head. The internal and external diameters of the ring are 12 and 18 mm respectively.