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Comparison of von-Mises stresses in the flap/cap region and the RSB with a −9.0 D correction, 100 μm flap/cap, and uniform material properties through the depth for the geometric analog model, LASIK with material property changes, and small-incision lenticule extraction with material property changes. The units of stress are Pa (LASIK = laser in situ keratomileusis; RSB = residual stromal bed).
