Lens Having Regions With Different Focusing Powers (i.e., Multifocal) Patents (Class 623/6.27)
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Publication number: 20100312336Abstract: An ophthalmic lens includes an optic having an anterior surface and a posterior surface. The lens also includes a monofocal diffractive structure disposed on one of said surfaces for providing a diffractive focusing power. The lens further includes at least one multifocal diffractive structure disposed on one of said surfaces for providing a plurality of diffractive focusing powers. The multifocal diffractive structure is adapted to provide chromatic aberration compensation for near vision.Type: ApplicationFiled: May 14, 2010Publication date: December 9, 2010Inventors: Xin Hong, Xiaoxiao Zhang
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Publication number: 20100280608Abstract: The invention concerns an intraocular lens comprising an optical lens part which has a rear face (12, 22, 42, 52, 62) which can be towards the retina, wherein at least one optically effective face portion of the rear face has an at least approximately spherical curvature configuration, whose radius of curvature corresponds to the spacing of the face portion with respect to the retina in the region of greatest visual acuity.Type: ApplicationFiled: October 26, 2005Publication date: November 4, 2010Applicant: ACRI.TECH AG GESELLSCHAFT FUERO OPHTHALMOLOGISCHE PRODUKTEInventors: Wilhelm Stork, Joergen Petersen
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Publication number: 20100161051Abstract: An ophthalmic lens is disclosed, one embodiment comprising an optic having an anterior surface and a posterior surface disposed about an optical axis, wherein at least one of the surfaces has a profile characterized by superposition of a base profile and an auxiliary profile, the auxiliary profile comprising a continuous pattern of surface deviations from the base profile. The auxiliary profile is a sinusoidal profile and can be amplitude modulated, frequency modulated or both amplitude and frequency modulated. The ophthalmic lens can be an IOL.Type: ApplicationFiled: December 9, 2009Publication date: June 24, 2010Inventor: Xin Hong
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Publication number: 20100094413Abstract: An accommodating intraocular lens with variable optical power, comprising at least two optical elements, at least one of which is movable relative to the other in a direction perpendicular to the optical axis, wherein the optical elements form a lens with different optical power at different relative positions of the optical elements. At least two of the optical elements of the lens comprise at least one additional optical correction surface, which correction surfaces are adapted for simultaneous variable correction of one or more optical aberrations of the natural eye in which the degree of correction depends on the relative position of the optical elements.Type: ApplicationFiled: December 13, 2007Publication date: April 15, 2010Applicant: AKKOLENS INTERNATIONAL B.V.Inventors: Michiel Christiaan Rombach, Aleksey Nikolaevich Simonov
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Publication number: 20100094414Abstract: Embodiments of the present invention provide an intraocular lens with an optic zone having a first surface topology and a haptic zone having a second surface topology. The surface roughness of the haptic zone may be greater than the surface roughness of the optic zone. The surface topology of the optic zone may have a first surface geometry and the surface topology of the haptic zone may have a second surface geometry. The first and second surface geometries may retain lubrication fluid in a space formed therein. The haptics formed by the manufacturing process may have a reduced ability to adhere to the optic zone, such as when the lens is folded or advanced through a cannula.Type: ApplicationFiled: October 5, 2009Publication date: April 15, 2010Inventors: David A. Downer, Drew Morgan, Tu Cam Tran, Bobby C. Van Winkle
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Publication number: 20100057202Abstract: An intraocular lens for providing enhanced vision includes an optic having a clear aperture having an outer diameter. The optic has opposing first and second surfaces disposed about an optical axis, the first surface including a cross-sectional profile. The optic further includes central and outer zones that fill the entire clear aperture of the optic. The central zone is disposed about the optical axis having an outer diameter, the profile in the vicinity of the central zone having a constant radius of curvature or a radius of curvature that increases with increasing radius from the optical axis. The outer zone is disposed about the central zone, the profile in the outer zone having a base curvature with a base radius of curvature and a center of curvature, the profile in the outer zone characterized in that, as the distance from the optical axis increases, the distance from the center of curvature of the base curvature also increases. The central zone and the outer zone.Type: ApplicationFiled: March 5, 2009Publication date: March 4, 2010Applicant: Abbott Medical Optics IncInventor: Theophilus Bogaert
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Publication number: 20100036489Abstract: A lens is provided that is capable of preventing or slowing the progression of myopia when worn by a person. The lens has a power profile that reduces on-axis and off-axis hyperopic defocus created by the optics of the eye by creating on-axis and off-axis myopic defocus. The on-axis and off-axis myopic defocus is created by providing light rays that pass through a central vision region of the optical portion and light rays that pass through a peripheral region of the optical portion an increase in positive (plus) power. The overall effect is to prevent or slow the progression of myopia without any perceptible degradation in the person's central vision.Type: ApplicationFiled: July 31, 2009Publication date: February 11, 2010Inventors: Joseph Michael Lindacher, Ming Ye, Rick Edward Payor, Gregor F. Schmid
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Publication number: 20100016961Abstract: In one aspect, the present invention provides an ophthalmic lens (e.g., an IOL) that includes an optic having an anterior surface and a posterior surface disposed about an optical axis. At least one of the surfaces (e.g., the anterior surface) has a profile characterized by superposition of a base profile and an auxiliary profile. The auxiliary profile can include an inner region, an outer region and a transition region between the inner and the outer regions, where an optical path difference across the transition region (i.e., the optical path difference between the inner and the outer radial boundaries of the transition region) corresponds to a non-integer fraction (e.g., ½) of a design wavelength (e.g., a wavelength of about 550 nm).Type: ApplicationFiled: July 15, 2009Publication date: January 21, 2010Inventors: Xin Hong, Mutlu Karakelle, Xiaoxiao Zhang, Michael Simpson, Myoung Choi, Yan Zhang
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Publication number: 20100016962Abstract: In one aspect, the present invention provides a method of correcting vision, which comprises determining a residual accommodation exhibited by a natural, crystalline lens of an eye, and selecting a multifocal intraocular lens (IOL), which exhibits a far-focus optical power (e.g., in a range of about ?15 to about +50 Diopters (D)) and an add power (e.g., in a range of about 1 D to about 4 D), for implantation in the eye while retaining the natural lens. The add power of the IOL is selected as a function of the residual accommodation such that a combination of the IOL and the natural lens provides a visual contrast greater than about 10% at a spatial frequency of about 20 cycles/degree for viewing objects at a distance greater than about 30 cm from the eye.Type: ApplicationFiled: January 11, 2008Publication date: January 21, 2010Inventors: Xin Hong, Mutlu Karakelle, Xiaoxiao Zhang
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Publication number: 20100004742Abstract: An accommodating intraocular lens having anteriorly and posteriorly movable extended portions, such as T-shaped haptics, extending from a central optic to be implanted within a human eye, and a second optic spaced from the posterior optic. The first optic is intended to be implanted in the capsular bag, and the second optic may be located in the capsular bag, in the sulcus, or in the anterior chamber. The second optic can be spaced from and fixed to the first optic and this lens assembly implanted in the capsular bag.Type: ApplicationFiled: June 17, 2009Publication date: January 7, 2010Inventor: J. Stuart Cumming
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Publication number: 20090292356Abstract: An improved multifocal design for IOL is provided. A particular embodiment includes an intraocular lens (IOL) with a foldable optic. The IOL also includes multi-hinged haptics coupled to the foldable optic operable to position the IOL within an eye. Each of the multi-hinged haptics includes a first hinge and a second hinge farther from the foldable optic. The first hinge has a first thickness between an anterior side and a posterior side of the multi-hinged haptic, the second hinge has a second thickness between the anterior side and the posterior side of the multi-hinged haptic, and the first thickness is greater than the second thickness. Another embodiment of the present invention provides a method to correct the visual impairment of an aphakic patient by implanting such an IOL.Type: ApplicationFiled: May 21, 2009Publication date: November 26, 2009Inventors: Michael Hamlin, James Scott, Huong Huynh
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Publication number: 20090234448Abstract: An ophthalmic lens for providing enhanced or extended depth of focus includes an optic having an aperture disposed about an optical axis. The optic includes a first surface having a first shape and an opposing second surface having a second shape, the first and second surfaces providing, a base power and, in some embodiments an add power. The optic further includes an extended focus mask disposed upon at least one of the first shape and the second shape that is configured to provide the enhanced or extended depth of focus for one or more foci of the optic, as compared to a similar optic not having the extended focus mask.Type: ApplicationFiled: May 13, 2008Publication date: September 17, 2009Applicant: Advanced Medical Optics, Inc.Inventors: Hendrik Albert Weeber, Patricia Ann Piers, Carina R. Reisin
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Publication number: 20090204208Abstract: The present invention provides an intraocular lens (IOL) having an optic with a posterior and an anterior refractive surfaces, at least one of which has an aspherical profile, typically characterized by a non-zero conic constant, for controlling the aberrations of a patient's eye in which the IOL is implanted. Preferably, the IOL's asphericity, together with the aberrations of the patient's eye, cooperate to provide an image contrast characterized by a calculated modulation transfer function (MTF) of at least about 0.25 and a depth of field of at least about 0.75 Diopters.Type: ApplicationFiled: April 16, 2009Publication date: August 13, 2009Inventor: Michael J. Simpson
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Patent number: 7572007Abstract: In one aspect, the present invention provides a diffractive ophthalmic lens (e.g., a diffractive IOL) that includes an optic having an anterior surface and a posterior surface, where the optic provides a far focus. A frustrated diffractive structure comprising a plurality of diffractive zones is disposed on at least one of those surfaces so as to provide a near focus. Each zone is separated from an adjacent zone by a zone boundary that imparts an optical delay to the incident light. Further, at least two consecutive zone boundaries are configured such that a difference between their associated phase delays for at least one wavelength of the incident light is greater than about ¼ wavelength so as to direct a portion of the incident light to a location between the near and far foci.Type: GrantFiled: August 2, 2006Date of Patent: August 11, 2009Assignee: Alcon, Inc.Inventor: Michael J. Simpson
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Publication number: 20090164008Abstract: In one aspect, the present invention provides an intraocular lens (IOL) that includes an optic comprising an anterior surface, a posterior surface, and a plurality of diffractive zones disposed on one of those surfaces. The surface having the diffractive zones has a profile characterized by a combination of aspheric and toric components.Type: ApplicationFiled: December 21, 2007Publication date: June 25, 2009Inventors: Xin Hong, Drew Morgan
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Publication number: 20090062911Abstract: An intraocular lens for providing enhanced vision includes an optic with a clear aperture over which light may be focused onto or near the retina of an eye. The optic includes an anterior surface and an opposing posterior surface, the surfaces disposed about an optical axis. The optic includes a central zone and an outer zone disposed about the central zone. The central zone comprises a plurality of optical powers that progressively vary between a first optical power at a center of the central zone and a second optical power at a periphery of the central zone, wherein the absolute value of the difference between the first optical power and the second optical power being between predetermined values. The outer zone comprises a third optical power and may also have a negative spherical aberration. The optic typically has a variation in optical power over the entire clear aperture that is less than a predetermined amount.Type: ApplicationFiled: August 27, 2007Publication date: March 5, 2009Applicant: AMO GRONINGEN BVInventor: Theophilus Bogaert
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Publication number: 20090030513Abstract: The invention relates to a multifocal phakic intraocular lens having three focal regions having varying radii of curvature. When properly structured and placed, the lenses of the invention provide near, far and intermediate vision. The lens may also comprise a fenestration which permits flow of aqueous through the fenestration to provide nutrition to the anterior lens epithelium as well as the corneal endothelium.Type: ApplicationFiled: July 27, 2007Publication date: January 29, 2009Inventors: Igor G. Valyunin, Alexander P. Hatsis
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Publication number: 20080281414Abstract: A method is disclosed to place supplemental IOLs in the anterior chamber, posterior chamber or both, in combination with the eye's natural lens or a separate, implanted artificial lens.Type: ApplicationFiled: April 18, 2008Publication date: November 13, 2008Inventor: Takayuki Akahoshi
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Patent number: 7441894Abstract: In one aspect of the invention, a trifocal ophthalmic lens is disclosed that includes an optic having at least one optical surface, and a plurality of diffractive zones that are disposed on a portion of that surface about an optical axis of the optic. At least two of those diffractive zones have different areas so as to cause broadening of optical energy profiles at a near and a far foci of the diffractive zones for generating an intermediate focus.Type: GrantFiled: February 9, 2006Date of Patent: October 28, 2008Assignee: Alcon Manufacturing, Ltd.Inventors: Xiaoxiao Zhang, Steve VanNoy, Xin Hong
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Publication number: 20080243247Abstract: An apparatus and method for reducing intraocular pressure in a patient's eye is provided. A deformable intraocular member having a relaxed state with a relaxed profile having a first width, a first energized state with a first profile having a second width, and a second energized state with a second profile having a third width is provided. The deformable intraocular member relaxed state width is greater than the width of a lens capsule which surrounds a lens of the patient's eye prior to cataract surgery. The second energized state width is greater than the patient's lens capsule width after cataract surgery and smaller than the width in the relaxed state. The deformable intraocular member in the second energized state is configured to urge deformation of the lens capsule to thereby promote opening of a trabecular meshwork and canal of Schlemm of the patient's eye to promote drainage of aqueous humor from an anterior chamber and reduce intraocular pressure in the patient's eye.Type: ApplicationFiled: April 24, 2008Publication date: October 2, 2008Inventors: Brooks J. Poley, Richard L. Lindstrom
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Patent number: 7377640Abstract: A method of designing a multifocal ophthalmic lens with one base focus and at least one additional focus, capable of reducing aberrations of the eye for at least one of the foci after its implantation, comprising the steps of: (i) characterizing at least one corneal surface as a mathematical model; (ii) calculating the resulting aberrations of said corneal surface(s) by employing said mathematical model; (iii) modeling the multifocal ophthalmic lens such that a wavefront arriving from an optical system comprising said lens and said at least one corneal surface obtains reduced aberrations for at least one of the foci. There is also disclosed a method of selecting a multifocal intraocular lens, a method of designing a multifocal ophthalmic lens based on corneal data from a group of patients, and a multifocal ophthalmic lens.Type: GrantFiled: June 23, 2006Date of Patent: May 27, 2008Assignee: Amo Groningen, B.V.Inventors: Patricia Ann Piers, Hendrik Albert Weeber, Sverker Norrby
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Patent number: 7311398Abstract: A variable focus lens for an eye comprising a transparent rear wall, a transparent front wall, a cavity formed between the transparent front wall and the transparent rear wall, first and second immiscible fluids of differing refractive index contained within said cavity, and electrodes to which a voltage is able to be applied to change the curvature of a fluid meniscus between the two fluids. At least the rear wall of the lens includes a biocompatible material, which material provides for biocompatibility of the lens with the eye.Type: GrantFiled: February 25, 2005Date of Patent: December 25, 2007Assignee: Koninklijke Philips Electronics N.V.Inventors: Stein Kuiper, Bernardus H. W. Hendriks
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Patent number: 7261736Abstract: A visual prosthesis includes an artificial muscle configured to deform in response to a focusing signal. The artificial muscle is coupled to at least a portion of an optical system for changing a focal point thereof.Type: GrantFiled: July 21, 2004Date of Patent: August 28, 2007Assignee: Massachusetts Eye & Ear InfirmaryInventor: Dimitri T. Azar
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Patent number: 7150759Abstract: An intraocular lens (IOL) includes an optic for focusing light and an accommodation assembly for axially moving and/or deforming the optic in response to naturally occurring actions of the eye, thus allowing a patient to more effectively focus on near objects. In addition, the optic may be multifocal or aspheric, wherein the maximum add power of the lens is combined with the increase in diopter power obtained through axial movement and/or deformation of the optic, resulting in enhanced accommodation.Type: GrantFiled: September 12, 2003Date of Patent: December 19, 2006Assignee: Advanced Medical Optics, Inc.Inventors: Marlene L. Paul, Daniel G. Brady, Michael Lowery
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Patent number: 7144423Abstract: In accordance with the present invention, a multifocal intraocular lens provides greater or lesser refraction in relation to the position of the head and eyes of a user. A multifocal intraocular lens body for insertion into a fluid-filled enucleated natural lens capsule of an eye is provided wherein the lens body encompasses the optical axis of the eye and provides different greater or lesser refraction depending upon the position of the eye. In a second embodiment, the lens body can be used with an artificial lens capsule implanted within an eye.Type: GrantFiled: November 12, 2003Date of Patent: December 5, 2006Inventor: Marguerite B. McDonald
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Patent number: 7004585Abstract: An ophthalmic lens, such as multifocal contact lens, that is worn on the surface of the eye and has a blended design for a segmented optical zone. The lens has an anterior surface and an opposite posterior surface, wherein the anterior surface includes a vertical meridian, a horizontal meridian, a central optical zone having at least a first optical zone for primary gaze, a second optical zone for down-gaze and an optical blending zone between the first and second optical zones. The optical blending zone has a surface that ensures a smooth surface transition from the first optical zone to the second optical zone and that allows the first and second optical zone to be designed independently and optimally so that ghost images or blur from the transition between the first and second optical zones can be minimized or eliminated. Image blur from the blend zone that subtends the pupil is minimized by the magnitude of the curvature of the blend zone.Type: GrantFiled: January 28, 2004Date of Patent: February 28, 2006Assignee: Novartis AGInventor: Joseph Michael Lindacher
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Patent number: 6871953Abstract: A monocentric bifocal contact lens with upper and lower optical power zones is connected by a transition comprising a family of sigmoidal curves. The sigmoidal curve begins with a common tangent at the boundary of the near zone and, with a reversal of sign from the near zone curve, climbs with increasing positive slope to an inflection point, whereupon it continues to climb with decreasing positive slope until reaching the distance zone curve, with which it has a common tangent. There is no discontinuity in the first derivative of the curve throughout its length. A sigmoidal curve can be constructed from numerous mathematical functions, examples of which include polynomial, conic, transendental, or cumulative distribution curves.Type: GrantFiled: September 29, 2003Date of Patent: March 29, 2005Assignee: SoftFocal Company, Inc.Inventors: Robert B. Mandell, Charles E. Campbell
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Patent number: 6855164Abstract: This intraocular lens includes an optic body having anterior and posterior walls, a chamber, and optically transmissive primary and secondary fluids, and method for making and using the same. The secondary fluid is substantially immiscible with the primary fluid and has a different density and a different refractive index than the primary fluid. The primary fluid is present in a sufficient amount that orienting optical body optical axis horizontally for far vision positions the optical axis through the primary fluid, thereby immersing the anterior and posterior optical centers in the primary fluid. The secondary fluid is contained in the optic body in a sufficient amount that orienting the optical axis at a range of effective downward angles relative to the horizontal for near vision positions the optical axis to extend through the primary fluid and the secondary fluid, thus changing the focus of the intraocular lens.Type: GrantFiled: May 30, 2002Date of Patent: February 15, 2005Assignee: Vision Solutions Technologies, LLCInventor: Alan N. Glazier
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Publication number: 20040236421Abstract: An intraocular implant for implantation into the interior of a human eye, the eye having a retina, the implant comprising a body member and an optical arrangement. The body member has an anterior surface, a posterior surface and optical properties. The optical arrangement is configured for forming a first image on the retina. The first image is an image of at least part of the central visual field. The body member and/or the optical arrangement are configured for forming a second image on the retina. The second image is an image of at least part of the peripheral visual field.Type: ApplicationFiled: May 13, 2004Publication date: November 25, 2004Applicant: Isaac LipshitzInventors: Isaac Lipshitz, Yariv Lipshitz
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Patent number: 6800091Abstract: This patent represents a deformable artificial intraocular lens and method for implantation into the human eye. The lens is used for implantation after cataract surgery. The lens optic consists of one smooth optical surface. The second optical surface is a series of annular concentric rings. The extremely thin lens optic along with the thin haptic can be rolled, folded, or squeezed to pass through a small incision (<1.5 millimeters) in the cornea or sclera of the human eye. The method of correcting a loss of accommodation includes removing the natural crystalline lens from the eye and inserting an intraocular lens in the eye. This lens represents a breakthrough in removal of mass from the lens. After insertion into the eye, the ultra thin lens and haptic design allows the lens to move in the eye providing accommodation for the patient.Type: GrantFiled: July 16, 2002Date of Patent: October 5, 2004Assignee: ThinOptX, Inc.Inventors: Wayne B. Callahan, Jeffery S. Callahan
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Publication number: 20040193264Abstract: An IOL implant for correcting eyesight by placement into the anterior chamber of a patient wherein a relatively mild amount of correction is provided that his on the order of less than five dioplers. The implant can be designed for an astigmatism correction or the optic can be a multifocal lens, such as a bifocal lens. Haptics are provided allowing rotation of the implant during surgery to achieve the desired axis of correction for astigmatism.Type: ApplicationFiled: March 31, 2003Publication date: September 30, 2004Inventor: Richard Lindstrom
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Patent number: 6790232Abstract: An intraocular lens for use in a mammalian eye having a natural lens, the intraocular lens including a lens body sized and adapted for placement in the eye, and having a baseline optical power and at least one optical add power. The at least one optical add power is reduced relative to the corresponding optical power of a similar intraocular lens adapted for placement in a similar eye in which the natural lens has been removed.Type: GrantFiled: April 30, 1999Date of Patent: September 14, 2004Assignee: Advanced Medical Optics, Inc.Inventor: Alan J. Lang
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Patent number: 6786928Abstract: This patent represents a deformable artificial intraocular lens for implantation into the human eye. The lens is used for implantation after cataract surgery. The lens optic consists of one smooth optical surface. The second optical surface is a series of annular concentric rings. The rings allow the lens to have extremely thin edges, which reduce glare, halos, and distortion. The extremely thin lens optic along with the thin haptic can be rolled, folded, or squeezed to pass through a small incision (<1.5 millimeters) in the cornea or sclera of the human eye. This lens represents a breakthrough in removal of mass from the lens. The ultra thin lens and haptic design allows the lens to move in the eye providing accommodation for the patient. The lens and haptic design reduces the radial forces on the eye to the point where the naturally occurring pressures in the eye move the lens thus providing accommodation.Type: GrantFiled: July 16, 2002Date of Patent: September 7, 2004Assignee: ThinOptX, Inc.Inventors: Wayne B. Callahan, Jeffery S. Callahan
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Patent number: 6709103Abstract: The invention provides methods for designing lenses useful for correcting presbyopia that permits variation of the speed of the power change from distance to near vision power or near to distance vision power. The rate of change may be symmetrical around the midpoint or faster or slower on either side of the midpoint.Type: GrantFiled: October 31, 2002Date of Patent: March 23, 2004Assignee: Johnson & Johnson Vision Care, Inc.Inventors: Jeffrey H. Roffman, Daoud R. Iskander, Brett A. Davis, Michael J. Collins
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Patent number: 6645246Abstract: An intraocular lens for use in a mammalian eye includes an optic adapted to focus light toward a retina of the mammalian eye and, in cooperation with the mammalian eye, to provide accommodation, the optic including a first portion adapted to move in response to the action of the mammalian eye; and a second portion surrounded by the first portion, and having a higher index of refraction than the first portion and/or being less deformable than the first portion in response to forces exerted by the mammalian eye.Type: GrantFiled: September 7, 2000Date of Patent: November 11, 2003Assignee: Advanced Medical Optics, Inc.Inventors: Joseph I. Weinschenk, III, Charles X. Liao, Massoud Ghazizadeh
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Publication number: 20030156248Abstract: An improved opthalmic lens is disclosed which has a plurality of alternating power zones with a continuously varying power within each zone, as well as in transition from one zone to another. In other words, a plurality of concentric zones (at least two) are provided in which the variation from far to near vision correction is continuous, i.e., from near correction focal power to far correction focal power, then back to near, and again back to far, or vice versa. This change is continuous (progressive), without any abrupt correction changes, or “edges”.Type: ApplicationFiled: January 27, 2003Publication date: August 21, 2003Inventor: Valdemar Portney
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Patent number: 6596026Abstract: An intraocular lens implant including a telescope body defining an optical path for light to pass therethrough, a positive lens and a negative lens attached to the telescope body, and mounting structure connected to the telescope body for mounting the implant in an eye, wherein the lenses abut against each other, and a distance between the positive lens and the negative lens is fixed and determined by the lenses abutting against each other.Type: GrantFiled: November 27, 2000Date of Patent: July 22, 2003Assignee: Visioncare Ophthalmic Technologies, Inc.Inventors: Yosef Gross, Gideon Dotan, Isaac Lipshitz, Eli Aharoni
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Publication number: 20030105522Abstract: This intraocular lens includes an optic body having anterior and posterior walls, a chamber, and optically transmissive primary and secondary fluids. The secondary fluid is substantially immiscible with the primary fluid and has a different density and a different refractive index than the primary fluid. The primary fluid is present in a sufficient amount that orienting optical body optical axis horizontally for far vision positions the optical axis through the primary fluid, thereby immersing the anterior and posterior optical centers in the primary fluid. The secondary fluid is contained in the optic body in a sufficient amount that orienting the optical axis at a range of effective downward angles relative to the horizontal for near vision positions the optical axis to extend through the primary fluid and the secondary fluid, thus changing the focus of the intraocular lens.Type: ApplicationFiled: May 3, 2002Publication date: June 5, 2003Inventor: Alan N. Glazier
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Publication number: 20030060880Abstract: A toric shaped intraocular lens having at least one toric shape lens portion. The toric shaped intraocular lens corrects astigmatism of the eye. Preferably, the toric shaped intraocular lens is a deformable type intraocular lens.Type: ApplicationFiled: January 29, 1997Publication date: March 27, 2003Inventor: VLADIMIR FEINGOLD
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Patent number: 6533416Abstract: Toric contact or intraocular lenses having a correcting portion characterized by one or more novel constructions that each produce an optical path that improves angular misalignment tolerance. The lens may be constructed with a “smooth atoric” aspect where the optical path through the correcting portion of the lens corrects for both astigmatism and an axisymmetric aberration other than astigmatism, there being no sudden surface discontinuity between the regions that provide the different corrections (thus, “smooth”). In another embodiment, the lens may be constructed with so-called “sectors” circumferentially arranged around the optical axis such that an optical path through the correcting portion of the lens varies as a function of the angular separation from the reference meridian plane, and the correcting portion is divided into at least two sectors having different astigmatism correction axes.Type: GrantFiled: July 20, 2001Date of Patent: March 18, 2003Assignee: Ocular Sciences, Inc.Inventors: Bruno Fermigier, Richard Legras, Nicolas Chateau
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Patent number: 6527389Abstract: An improved ophthalmic lens is disclosed which has a plurality of alternating power zones with a continuously varying power within each zone, as well as in transition from one zone to another. In other words, a plurality of concentric zones (at least two) are provided in which the variation from far to near vision correction is continuous, i.e., from near correction focal power to far correction focal power, then back to near, and again back to far, or vice versa. This change is continuous (progressive), without any abrupt correction changes, or “edges”. Two versions of the invention are disclosed. In the first version continuous, alternating power variation is accomplished by a continuously changing curvature of the lens posterior surface, thereby altering the angle of impact of light rays on the eye.Type: GrantFiled: March 22, 2002Date of Patent: March 4, 2003Assignee: Advanced Medical Optics, Inc.Inventor: Valdemar Portney
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Patent number: 6503276Abstract: Intraocular lenses include a lens body sized and adapted for placement in a mammalian eye and having a plurality of different optical powers, and a movement assembly joined to the lens body and adapted to cooperate with the mammalian eye to effect accommodating movement of the lens body in the eye. Such intraocular lenses provide enhanced accommodation relative to the accommodation attainable using a single optical power IOL adapted for accommodating movement.Type: GrantFiled: March 30, 2001Date of Patent: January 7, 2003Assignee: Advanced Medical OpticsInventors: Alan I. Lang, Valdemar Portney, Stephen W. Laguette
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Patent number: 6435681Abstract: Ophthalmic lenses, for example, intraocular lenses, contact lenses, corneal implant lenses and the like, have multifocal characteristics which provide beneficial reductions in at least the perception of one or more night time visual symptoms such as “halos”, and “glare or flare”.Type: GrantFiled: January 11, 2001Date of Patent: August 20, 2002Inventor: Valdemar Portney
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Patent number: 6428573Abstract: An intraocular multifocal lens has no definite line between near, far, and/or intermediate power lens areas, and substantially no distortion. A human or animal can use the lens with no need for it to translate. The lens preferably has substantially circular, substantially concentric, lens areas in order from the center, far, intermediate, and near. The multifocal zone preferably is about 2.5-3.5 mm in diameter for all adults. The lens can be made by mechanically acting on a single vision lens (having a predetermined near prescription) using a spinner shaft mounting the lens, and a rotating dish covered by a taut fabric.Type: GrantFiled: January 18, 2001Date of Patent: August 6, 2002Inventor: Howard J. Barnett
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Patent number: 6277146Abstract: An IOL that is free of glare and the halo effect associated with conventional IOLs and a method for using the same is provided. The IOL is adapted for implantation into an eye, in place of or in addition to the natural lens of the eye, to adjust a refractive power of an eye. The IOL includes at least one lens portion and a light-absorbing material. The lens portion has first and second surfaces and a perimeter connecting the first and second surfaces which extends entirely about the lens portion. The first and second surfaces can have any suitable shape to provide the lens portion with a suitable refractive power. The light-absorbing material is disposed to absorb light propagating in a direction towards the perimeter to thus eliminate glare and the halo effect caused by such light. One or more haptics which include a light absorbing material can be attached to the lens portion for mounting the IOL in the eye.Type: GrantFiled: September 16, 1999Date of Patent: August 21, 2001Inventors: Gholam A. Peyman, Jeffrey E. Koziol
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Patent number: 6231603Abstract: Intraocular lenses include a lens body sized and adapted for placement in a mammalian eye and having a plurality of different optical powers, and a movement assembly joined to the lens body and adapted to cooperate with the mammalian eye to effect accommodating movement of the lens body in the eye. Such intraocular lenses provide enhanced accommodation relative to the accommodation attainable using a single optical power IOL adapted for accommodating movement.Type: GrantFiled: November 10, 1998Date of Patent: May 15, 2001Assignee: Allergan Sales, Inc.Inventors: Alan I. Lang, Valdemar Portney, Stephen W. Laguette