Model control of corneal surface curvature during refractive surgery: validation on artificial eyes

We present a method that optimizes refractive surgical cutting and controls changes in corneal curvature induced by biomechanical effects. In detail, based on the curvature and mechanical characteristics of the target, a finite element analysis model was established to simulate the refractive cutting process, analyze and compensate the biomechanical effects, and verify them on a measurable artificial eye device. In the laser cutting experiment of artificial eye, the finite element analysis model based on our method can accurately predict the change of corneal curvature. The guided surgical cutting model can compensate for 70% of the undercorrection caused by biomechanical effects.