title: Model of the optical system of the human eye during accommodation.
abstract: A model of the human eye with a gradient index crystalline lens is presented. The crystalline lens shape at different accommodation levels is described by a single function which is a combination of hyperbolic cosine functions and hyperbolic tangent functions. Using the experimental data published in the literature a model of the variations of the external lens shape was created. Formulae for the lens shape parameters and gradient index distribution for different accommodation levels are given.
authors.affiliation: Institute of Physics, Wroclaw University of Technology, Poland. popiolek@if.pwr.wroc.pl
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Popiolek-Masajada
authors.forename: Henryk
authors.initials: H
authors.lastname: Kasprzak
mesh_terms: D000065:Accommodation, Ocular; D006801:Humans; D007908:Lens, Crystalline / Q000502:physiology*; D008954:Models, Biological; D012029:Refraction, Ocular