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Intraocular lens with peripheral region designed to reduce negative dysphotopsia

An intraocular lens and peripheral technology, applied in the field of IOL, can solve problems such as abnormal optical phenomena

Inactive Publication Date: 2010-03-24
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Intraocular lens with peripheral region designed to reduce negative dysphotopsia
  • Intraocular lens with peripheral region designed to reduce negative dysphotopsia
  • Intraocular lens with peripheral region designed to reduce negative dysphotopsia

Examples

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Embodiment Construction

[0058] The present invention generally provides intraocular lenses (IOLs) that improve and preferably prevent the shadowy sensation reported by some IOL patients. This effect is generally known in the art as photopsias. As discussed in more detail below, in many embodiments, the IOLs of the present invention include a central optic surrounded by a peripheral flange, for example, by inhibiting the formation of secondary peripheral images or by directing some light to such an optic. The shaded area between the secondary peripheral image and the primary image formed by the IOL suppresses photopsias. To this end, in some cases the peripheral flange may cause scattering of peripheral rays entering the eye, for example at large viewing angles, while in other cases the peripheral flange may be substantially opaque to visible radiation. In other cases, the peripheral flange may act as a barrier by refracting and / or diffracting peripheral light rays towards the portion of the retina o...

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Abstract

In one aspect, the invention provides an intraocular lens (IOL) that includes an optic and a peripheral optical flange that surrounds the optic. The optic can form an image of a field of view on the IOL user's retina and the peripheral flange can inhibit dysphotopsia. By way of example, the peripheral flange can include at least one textured surface that is adapted to receive peripheral light raysentering the eye at large visual angles so as to cause their scattering in order to inhibit dysphotopsia, e.g., by preventing the formation of a secondary peripheral image or scattering some light toa shadow region between such a secondary image and an image formed by the IOL.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under 35 U.S.C. §119 to U.S. Nonprovisional Patent Application No. 11 / 742,041, filed April 30, 2007, the entire contents of which are hereby incorporated by reference. [0003] related application [0004] This application is related to the following patent applications filed concurrently with this application, each of which is incorporated herein by reference: "Intraocular Lens with Asymmetric Optics (Attorney Docket No. 3360)", "IOL peripheral Surface Designs to Reduce Negative Dysphotopsia" ( Attorney Docket No. 3345), "Intraocular Lens with Asymmetric Haptics" (Attorney Docket No. 3227), "Intraocular Lens With Edge Modification" (Attorney Docket No. 3225), "A New Ocular Implant to Correct Dysphotopsia, Glare , Halo, and Dark Shadow” (Attorney Docket No. 3226), “Haptic Junction Designs to Reduce Negative Dysphotopsia” (Attorney Docket No. 3344), and “Graduated Blue Filtering Intraocular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16
CPCA61F2/1616A61F2/1613A61F2/1654A61F2/16A61F9/013
Inventor M·J·辛普森张晓啸
Owner ALCON INC
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