Lens having an optically controlled peripheral portion and a method for designing and manufacturing the lens

a peripheral portion and lens technology, applied in the field of contact lenses and phakic intraocular lenses, can solve the problems of not providing vision correction, and soft contact lenses are not designed to provide optical control over the peripheral portions of lenses, so as to prevent or inhibit eye growth
US20080084534A1Inactive Publication Date: 2008-04-10NOVARTIS AG
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
NOVARTIS AG
Publication Date
2008-04-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

A contact lens or phakic IOC lens is provided with a peripheral portion that has a power profile that provides optical control of peripheral vision images. Typically, the central portion of the lens is also provided with optical control. The power profile of the lens at the boundary of the central and peripheral portions meets certain boundary conditions that ensure that the lens provides a desired or selected vision correction. Because the peripheral portion of the lens provides optical control that defocuses the peripheral vision image relative to the retina, the lens can be used to prevent or inhibit growth of the eye, thereby preventing or inhibiting myopia or the effects of myopia.
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Description

[0001] This application claims the benefits under 35 USC 119(e) of U.S. Provisional Patent Application Nos. 60 / 828,793 filed Oct. 10, 2006 and 60 / 829,055 filed Oct. 11, 2006, herein incorporated by reference in their entireties.TECHNICAL FIELD OF THE INVENTION

[0002] The invention relates to contact lenses and phakic intraocular (IOC) lenses used to provide vision correction. More particularly, the invention relates to providing contact lenses and phakic IOC lenses with peripheral portions that are optically controlled.BACKGROUND OF THE INVENTION

[0003] A contact lens is a thin plastic or glass lens that is fitted over the cornea of the eye to correct vision defects. Various types of contact lenses exist that are designed to treat various types of vision defects. A phakic IOC lens is a lens that is implanted behind a person's cornea and works in conjunction with the natural crystalline lens of the eye to provide vision correction. Phakic IOC lenses are typically made of a material called...

Claims

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