A virtual environment and model of the eye for surgical simulation
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Analytic Modeling and Simulating of the Cornea with Finite Element Method
Medical Imaging and Informatics
Deformation and smooth joining of mesh models for cardiac surgical simulation
GMP'08 Proceedings of the 5th international conference on Advances in geometric modeling and processing
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Cornea surgeons have observed that changes in cornea curvature can follow cataract surgery and cause astigmatism. The placement of surgical incisions has been shown to influence these curvature changes. Though empirical data has been collected about this phenomenon, a biomechanical model has not been employed in predicting postsurgical outcomes. This work implemented an incised finite element model of the eye to investigate factors influencing corneal shape after surgery. In particular, the effects of eye muscle forces and intra-ocular pressure were simulated. Cornea shape change was computed via finite element analysis, and the resulting change in cornea curvature was measured by fitting quadratic curves to the horizontal and vertical meridians of the cornea. Results suggest that these two sources of deforming force counteract each other and contribute to astigmatism in perpendicular directions.