“…However, direct measurement of standard mechanical property parameters of the corneal tissue, such as Young’s modulus of elasticity, has only been conducted in the ex vivo experimental setting. Ex-vivo biomechanical testing methods currently applied to measure corneas include tensile stretching (or strip extensiometry) 7–20 , bulge/inflation testing 18, 21–27 , nanoindentation testing (atomic force microscopy, AFM) 28–35 , indentation testing 36 , shear testing 4, 37 , and acoustic radiation force elastic microscopy 38 . Despite the existence of a variety of characterization methods available, the published values derived from such techniques lack reproducibility, evidenced by the large range of reported corneal Young’s modulus of elasticity values in literature (0.57kPa – 41MPa) 7–18, 21–36, 39 .…”