Fig. 7

Modelling the probe indentation test. Numerical simulation of the probe test. a Force versus apex displacement curve. b Cornea profile along the NT direction at the maximum displacement of the probe, corresponding to 0.6 mm indentation of the cornea. Two thin lines refer to the anterior and posterior surfaces of the cornea at the physiological IOP = 16 mmHg. c Distribution of the NT stress component along the NT meridian section at the physiological state. d Distribution of the NT stress component along the NT meridian section at the maximum indentation state