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Table 1 A summarization of the geometric and mechanical properties of cases #1 - 10

From: Etiology of Keratoconus: proposed biomechanical pathogenesis

  Description Geometry Mechanical properties
   Minimal thickness [μm] Region diameter [mm] Elastic modulus [MPa] Region diameter [mm]
Case 1 Nominal 500 - 0.4 -
Case 2 Mildly thin 350 2 0.4 -
Case 3 Severely thin 140 2 0.4 -
Case 4 Small defect 350 0.35 0.4 -
Case 5 50% more compliant 500 - 0.2 4
Case 6 70% more compliant 500 - 0.12 4
Case 7 90% more compliant 500 - 0.04 4
Case 8 Off-center thin 250 2 0.4 -
Case 9 Off-center more compliant 500 - 0.04 2
Case 10 Concentric stiffening 500 - 0.35 5
0.6125 5-6
0.875 6-7.5
1.225 7.5-11