Eye Models with a Diffractive-Refractive Lens
G. A. Lenkova
Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences
lenkova@iae.nsk.su
Keywords: intraocular lens, artificial eye lens, bifocal diffractive-refractive intraocular lens, eye model
Pages: 12-19
Abstract
The quality of the image formed by a MIOL-Akkord bifocal intraocular lens (diffractiverefractive lens) implanted into various known eye models is studied analytically. As the pupil radius increases, the Strehl ratio characterizing the resolution is demonstrated to decrease appreciably (down to 0.05-0.09) for models where the absolute value of asphericity of the frontal surface of the cornea is smaller than or equal to 0.26 (far vision) and 0.18 (near vision). The effect of the aspherical shape of the rear surface of the cornea on the image quality is considered. It is noted that the best results for both far and near vision are provided by the model with Lotmar's cornea for which the diffractive component of the MIOL-Akkord eye lens is calculated.
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