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Correction of higher order aberratons in intraocular lenses

An intraocular lens, lens technology, applied in intraocular lens, glasses/goggles, equipment for testing eyes, etc., can solve problems such as changes in lens performance that cannot be considered

Active Publication Date: 2008-06-18
ALCON INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this average eye model cannot be used to account for variations in lens performance across a population sample of patients whose eyes have various eye parameters

Method used

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  • Correction of higher order aberratons in intraocular lenses
  • Correction of higher order aberratons in intraocular lenses
  • Correction of higher order aberratons in intraocular lenses

Examples

Experimental program
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Embodiment Construction

[0043] [043] The present invention primarily provides for the design of ophthalmic lenses by simulating the performance of multiple lenses in eye models characterized as having different values ​​of selected optical parameters based on the differences in those parameters exhibited by a population sample composed of the patient's eyes. Lens (eg IOL) approach. In the following examples, features of different aspects of the invention are described in connection with intraocular lenses. However, the teachings of the present invention can also be applied to other ophthalmic lenses, such as contact lenses. The term "intraocular lens" and its abbreviation "IOL" are used herein interchangeably to describe a lens that is implanted inside the eye or replaces the natural lens of the eye or is removed to enhance vision. Intraocular lenses and phakic lenses are typical lenses that can be implanted in the eye without removing the lens.

[0044] [044] Reference figure 1 In one embodiment ...

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Abstract

In one aspect, the present invention provides a method of designing an intraocular lens (32) (TOL) to address variations of at least one ocular parameter in a population of patient eyes. The method can include establishing at least one eye model (26) in which the ocular parameter can be varied over a range exhibited by the population. The eye model can be employed to evaluate a plurality of IOL designs in correcting visual acuity for eyes in the patient population. An IOL design that provides for a best fit for visual performance over at least a portion of the parameter range can then be selected.

Description

technical field [0001] [001] The present invention relates generally to methods of designing ophthalmic lenses, and more particularly to methods that take into account variations in ocular parameters within a population sample. Background technique [0002] [002] Intraocular lenses (IOLs) are lenses that are implanted in a patient's eye during cataract surgery to replace the crystalline lens. Such lenses are typically designed using a simplified model of the eye, which does not necessarily have the exact structure of the human eye. In some cases, for programming purposes, a relatively accurate eye model representing the average human eye is determined. However, such an average eye model cannot be used to account for variations in lens performance across a population sample of patients whose eyes have varying eye parameters. [0003] [003] Therefore, it is necessary to provide a better design method of ophthalmic lenses, especially the design method of IOL. Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16A61B3/00A61F9/00B29D11/00
CPCA61F2/16A61F2/1637A61B3/0025A61F2240/001A61F2240/008G02C7/02A61F2/141
Inventor 洪昕姆特鲁·卡拉克雷张晓啸
Owner ALCON INC