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Model of the optical system of the human eye during accommodation
Author(s) -
PopiolekMasajada Agnieszka,
Kasprzak Henryk
Publication year - 2002
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1046/j.1475-1313.2002.00024.x
Subject(s) - accommodation , lens (geology) , human eye , hyperbolic function , tangent , trigonometric functions , optics , mathematics , mathematical analysis , physics , geometry
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.