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- Title
The idea of a gradient index intraocular lens (IOL).
- Authors
Siedlecki, Damian; Pierscionek, Barbara K.
- Abstract
Aim: The usual treatment of an eye affected by cataract is the extraction of the crystalline lens from the capsular bag and replacing it with an artificial implant – an intraocular lens (IOL). Such a procedure usually helps the patient to regain his vision, however its quality is far from perfection. The most important element that affects the quality of vision of such a pseudophakic eye is the spherical aberration (SA) which is significantly higher than the SA of a healthy eye. One of the ways to minimize the SA is to involve the gradient index distribution in the medium of IOL. The aim of this study was to find the optimal radial gradient index distribution and to estimate its image quality. Methods: The theoretical model of the eye was used and its crystalline lens was replaced with the radial gradient index medium. The distribution of the refractive index was optimized in order to give the best possible retinal image quality. Results: Our theoretical studies showed that the SA of the eye with the Gaussian radial gradient IOL is much lower than the SA of the eye with any other IOL implanted and therefore the image quality is significantly higher. Conclusions: The implementation of the gradient index in the IOL implantation minimized the SA of a pseudophakic eye. The parameters of the gradient index distribution can be adjusted using an algorithm to the dimensions of a patient's eye.
- Subjects
INTRAOCULAR lenses; CATARACT surgery; OPHTHALMIC lenses; VISUAL accommodation; CRYSTALLINE lens
- Publication
Ophthalmic & Physiological Optics, 2008, Vol 28, Issue 1, p101
- ISSN
0275-5408
- Publication type
Abstract
- DOI
10.1111/j.1475-1313.2007.00530_18.x