# US 8,770,745 B2 · Lens having an optically controlled peripheral portion and a method for designing and manufacturing the lens > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,745 B2 - Document ID: US8770745B2 - Status: Granted - Kind: B2 - Application number: 12/906,780 - Filed: 2010-10-18 - Published: 2011-02-10 - Granted: 2014-07-08 - Earliest claimed: 2006-10-10 - Assignees: Novartis AG - Applicants: Joseph Michael Lindacher; Ming Ye - Inventors: Joseph Michael Lindacher; Ming Ye - Web page: https://patentgrep.com/patent/US8770745B2 ## CPC - G02C 7/04: Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00) - A61F 2/1602: {Corrective lenses for use in addition to the natural lenses of the eyes or for pseudo-phakic eyes} - A61F 2/1613: {having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus} - G02C 7/028: {Special mathematical design techniques} - G02C 2202/24: Myopia progression prevention - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## 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. ## Claims ### Claim 1 A lens for controlling a location at which a peripheral vision image is focused relative to a retina of an eye, the lens comprising: a central portion having at least one optical zone that provides optical control over light rays passing through the central portion, the central portion having a power profile that optically controls a location at which a center vision image is focused relative to a retina of an eye, wherein the central portion extends a radial distance from a center of the lens outwardly toward a periphery of the central portion that is between about 3.5 millimeters (mm) and about 4.0 mm, a peripheral portion having at least one optical zone that provides optical control over light rays passing through the peripheral portion, the peripheral portion having a power profile that optically controls a location at which a peripheral vision image is focused relative to a retina of an eye, wherein the power profile of the peripheral portion is defined by a mathematical function that is discontinuous at the boundary where the periphery of the central portion meets the peripheral portion such that a first derivative of the function is not obtainable, and wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 8.0 Diopters; and wherein the lens, when worn on a person's eye, provides myopic defocus of the peripheral vision image that helps prevent or inhibit growth of the eye. ### Claim 2 (depends on 1) The lens of claim 1, wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 3.0 Diopters. ### Claim 3 (depends on 1) The lens of claim 1, wherein the mathematical function is a piecewise function. ### Claim 4 (depends on 1) The lens of claim 1, wherein the lens is a soft contact lens. ### Claim 5 (depends on 1) The lens of claim 1, wherein the lens is a hard contact lens. ### Claim 6 (depends on 1) The lens of claim 1, wherein the lens is a phakic intraocular (IOC) lens. ### Claim 7 A lens for controlling a location at which a peripheral vision image is focused relative to a retina of an eye, the lens comprising: a central portion having at least one optical zone that provides optical control over light rays passing through the central portion, the central portion having a power profile that optically controls a location at which a center vision image is focused relative to a retina of an eye, wherein the central portion extends a radial distance from a center of the lens outwardly toward a periphery of the central portion that is between about 3.5 millimeters (mm) and about 4.0 mm a peripheral portion having at least one optical zone that provides optical control over light rays passing through the peripheral portion, the peripheral portion having a power profile that optically controls a location at which a peripheral vision image is focused relative to a retina of an eye, wherein the power profile of the peripheral portion is defined by a mathematical function that is continuous at the boundary where the periphery of the central portion meets the peripheral portion and that is not differentiable in a first derivative at the boundary, and wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 8.0 Diopters, and wherein the lens, when worn on a person's eye, provides myopic defocus of the peripheral vision image that helps prevent or inhibit growth of the eye. ### Claim 8 (depends on 7) The lens of claim 7, wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 3.0 Diopters. ### Claim 9 (depends on 7) The lens of claim 7, wherein the mathematical function is a spline. ### Claim 10 (depends on 7) The lens of claim 7, wherein the lens is a soft contact lens. ### Claim 11 (depends on 7) The lens of claim 7, wherein the lens is a hard contact lens. ### Claim 12 (depends on 7) The lens of claim 7, wherein the lens is a phakic intraocular (IOC) lens. ### Claim 13 A method for providing a lens to be worn on a person's eye that prevents or inhibits myopia by preventing or inhibiting eye growth, the method comprising: selecting a power profile for a peripheral portion of a lens to be designed, the power profile of the peripheral portion optically controlling a location at which a peripheral vision image is focused relative to a retina of an eye, the lens having a central portion, the central portion having a power profile that optically controls a location at which a center vision image is focused relative to a retina of an eye, wherein the central portion extends a radial distance from a center of the lens outwardly toward a periphery of the central portion that is between about 3.5 millimeters (mm) and about 4.0 mm, and wherein the peripheral portion extends a radial distance from a boundary where the periphery of the central portion meets the peripheral portion to a periphery of the peripheral portion of about 3.5 mm to about 4.0 mm; and producing a design of a lens having the central portion and the peripheral portion, the peripheral portion having the selected power profile, wherein the power profile of the peripheral portion is defined by a mathematical function that is discontinuous at the boundary where the periphery of the central portion meets the peripheral portion such that a first derivative of the function is not obtainable, and wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 8.0 Diopters; and wherein the lens, when worn on a person's eye, provides myopic defocus of the peripheral vision image that helps prevent or inhibit growth of the eye. ### Claim 14 (depends on 13) The method of claim 13, further comprising: manufacturing a lens or a plurality of lenses having the lens design. ### Claim 15 (depends on 13) The method of claim 13, wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 3.0 Diopters.