An analytically solvable model for biomechanical response of the cornea to refractive surgery.
An analttically solvable model that considers the elasticity of the cornea is developed for use in the current and novel corneal refractive surgery procedures. The model assumes that the cornea is a thin spheroid shell with an elastic response to intraocular pressure. The value of the Young's modulus of the post-operative cornea and its dependence on the geometric parameters of the ablation zone are estimated employing "best-fit" approach to nomograms currently used in corneal refractive surgery. These elasticity parameters are applied for quantitative modeling of different types of refractive surgery for myopia.
Djotyan
G P
GP
University of Michigan, College of Engineering, Department of Biomedical Engineering, Ann Arbor 48109, USA. jotyan@engin.umich.edu
Kurtz
R M
RM
Fernández
D C
DC
Juhasz
T
T
D001696:Biomechanical Phenomena; D001698:Biomedical Engineering; D003315:Cornea / Q000503:physiopathology / Q000601:surgery*; D004548:Elasticity; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D053685:Laser Therapy / Q000379:methods; D054018:Lasers, Excimer; D008954:Models, Biological; D009216:Myopia / Q000503:physiopathology / Q000601:surgery; D018903:Photorefractive Keratectomy; D012030:Refractive Errors / Q000503:physiopathology; D054140:Refractive Surgical Procedures