Table 3.

Comparison of corneas between human and pig

		Human	Pig	Source (reference)
Diameter (mm)
horizontally		11.7	14.9	(11)
vertically		10.6	12.4
Thickness(μm)				(9), (10)
center		536	666
periphery		593	714
Refractive power (Diopter)		43.0	40.4	(10)
Tensile strength (MPa)		3.81	3.70	(104)
Stress-strain	α	42.8	39.3	(104)
Pattern*	β	2.97	2.97
Stress-relaxation	P(x100)	85.6	64.6	(104)
Pattern **	K(-)	0.0165	0.0553
	1000s	32.0%	59.2%	(106)

^*α is a scale factor

β represents the exponent of the nonlinear relationship between stress and strain

^**P is the value of G (t) at the end of the stress-relaxation test

K is the slope of fitted G (t)-In t line