Figure 3.
Comparisons of model predictions and experimental results for bovine inner (A) and outer (B) scleral surfaces. Each ramp displacement represents the average of two trials. (A) Ramp displacements of 45, 92.5, 125, 160, and 190 μm were imposed on five inner scleral surfaces. The sum of squares of residuals between experimental results and model predictions for five ramp displacements were 0.028, 0.17, 0.014, 0.34, and 1.18 gm2, respectively. Coefficients of determination for all ramp displacements were >0.98. (B) Viscoelastic responses of outer surface scleral specimens to indentation. 77.5-, 116-, 150-, 170-, and 265-μm ramp displacements were imposed. The sum of squares of residuals between experimental results and model predictions for the five ramp displacements were 6.3 × 10−4, 9.2 × 10−3, 2.05 × 10−5, 0.089, and 0.14 gm2, respectively; all coefficients of determination for fits to data exceeded 0.98.