Table 2.

The parameters used for calculation of corneal thickness and Young’s modulus.

The refractive index reported	The Poisson’ ratio	Elastic modulus	Reference
2.25 to 3.5 (THz range)			31,38,39
1.3–1.4 (visible range)			40
	0.49	0.16–0.3 MPa in vivo	41
	0.49	0.29 MPa in vivo	42
		0.29 MPa in vivo	43
		Age 20 years (95% confidence interval, 0.22–0.31) to 0.52 (0.50–0.54) MPa at age 100 years (R2 = 0.70)	44
		0.656 MPa ex vivo porcean cornea	45