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IOL peripheral surface designs to reduce negative dysphotopsia

An optical surface, back surface technology, applied in the field of IOL, can solve problems such as abnormal optical phenomena

Inactive Publication Date: 2010-06-16
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

While such IOLs are able to substantially restore the patient's quality of vision, some patients with IOL implants report abnormal optical phenomena such as halos, glare, or dark areas in their vision

Method used

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  • IOL peripheral surface designs to reduce negative dysphotopsia
  • IOL peripheral surface designs to reduce negative dysphotopsia
  • IOL peripheral surface designs to reduce negative dysphotopsia

Examples

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Embodiment Construction

[0046] The present invention generally provides intraocular lenses comprising peripheral light directing surfaces and / or optical elements to direct at least a portion of incident light to one or more retinal locations offset from the primary image formed by the IOL, thereby inhibiting (improving and preferably Prevent) peripheral vision artifacts within the user's IOL field of view. The term "intraocular lens" and its abbreviation "IOL" are used interchangeably herein to describe lenses that are implanted in the eye to replace the eye's natural lens or to otherwise increase vision regardless of whether the natural lens is removed. For example, phakiclenses are examples of those that can be implanted in the eye without removing the natural lens.

[0047] For example, by referring to Figure 1A and 1B , an intraocular lens (IOL) 10 according to one embodiment of the present invention includes a lens 12 disposed about an optical axis OA, the lens 12 consisting of an anterior sur...

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Abstract

An IOL is disclosed that includes an anterior surface and a posterior surface disposed about an optical axis, where the posterior surface includes a central region extending to a peripheral region. Once the IOL is implanted in a patient's eye, the anterior surface and the central region of the posterior surface cooperatively form an image of a field of view on the retina and the peripheral region of the posterior surface directs at least some light rays incident thereon (e.g., via refraction by the anterior surface) to at least one retinal location offset from the image so as to inhibit dysphotopsia.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority under 35 U.S.C. §119 to US Provisional Patent Application No. 11 / 753,251, filed May 24, 2007, the entire contents of which are incorporated herein by reference. [0003] Related applications [0004] This application is a continuation-in-part of currently pending US Patent Application Serial No. 11 / 741,841, filed April 30, 2007. technical field [0005] The present invention relates generally to intraocular lenses (IOLs), and more particularly to IOLs that provide a patient with an image of the field of view without perceiving visual artifacts in the peripheral field of vision. Background technique [0006] The refractive power of the eye is determined by the refractive power of the cornea and the refractive power of the natural lens, which provides about one-third of the total refractive power of the eye. The process of aging and certain diseases such as diabetes can lead to clouding ...

Claims

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Application Information

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IPC IPC(8): A61F2/16
CPCA61F2/1613A61F2/1654A61F2/1656G02C7/044G02C2202/20A61F2002/1699A61F2/16
Inventor M·J·辛普森D·斯坦雷张晓啸K·S·爱丽思
Owner ALCON INC
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