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. 2017 Oct 24;7:13906. doi: 10.1038/s41598-017-14293-0

Table 1.

Geometrical and material properties of the six corneal layers used in the FEM models.

Layers Thickness (T) [μm] Density [kg/m3] Poisson’s ratio Stiffness [kPa] at IOP** [mmHg]
7.5 15 22.5 45
Epithelium 53 1.149 0.49 21.3 64.4 108.9 272.3
Basement membrane 2 1.149 0.49 9.7 29.3 49.5 123.8
Bowman’s membrane 12 1.149 0.49 141.9 429 726 1815
Stroma* 480 1.149 0.49
Descemet’s 12 1.149 0.49 64.5 195 330 825
Endothelium 5 1.149 0.49 12.9 39 66 165

*Matrix stiffness of stroma is C1=5kPa, see Table 2. **Stiffness at zero IOP obtained from study28.