Patents Assigned to Vision CRC Limited
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Patent number: 11467424Abstract: A contact lens for use in controlling the progression of myopia has a central optical zone approximating the normal diameter of the pupil of the eye that gives clear central vision at distance for the wearer. An annular peripheral optical zone that is substantially outside the diameter of the pupil is formed around the central optical zone with greater refractive power than that of the central zone so that oblique rays entering the eye through the peripheral optical zone will be brought to focus at a focal plane that is substantially on or anterior to the peripheral region of the retina.Type: GrantFiled: December 4, 2018Date of Patent: October 11, 2022Assignee: Vision CRC LimitedInventors: Brien Anthony Holden, Arthur Ho, Padmaja Rajagopal Sankaridurg, Thomas Arthur Aller, Earl Leo Smith
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Patent number: 10175502Abstract: A contact lens for use in controlling the progression of myopia has a central optical zone approximating the normal diameter of the pupil of the eye that gives clear central vision at distance for the wearer. An annular peripheral optical zone that is substantially outside the diameter of the pupil is formed around the central optical zone with greater refractive power than that of the central zone so that oblique rays entering the eye through the peripheral optical zone will be brought to focus at a focal plane that is substantially on or anterior to the peripheral region of the retina.Type: GrantFiled: September 20, 2016Date of Patent: January 8, 2019Assignee: Vision CRC LimitedInventors: Brien Anthony Holden, Arthur Ho, Padmaja Rajagopal Sankaridurg, Thomas Arthur Aller, Earl Leo Smith
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Patent number: 9477097Abstract: A contact lens for use in controlling or retarding the progression of myopia in an eye has a central optical zone approximating the normal diameter of the pupil of the eye that gives clear central vision at distance for the wearer. An annular peripheral optical zone that is substantially outside the diameter of the pupil is formed around the central optical zone with greater refractive power than that of the central zone so that oblique rays entering the eye through the peripheral optical zone will be brought to focus at a focal plane that is substantially on or anterior to the peripheral region of the retina. Preferably, the rear surface of the lens is shaped to conform to the cornea of the eye and the front surface of the lens is shaped to provide—in conjunction with the rear surface—the desired optical properties of the central and peripheral optical zones.Type: GrantFiled: January 23, 2014Date of Patent: October 25, 2016Assignee: Vision CRC LimitedInventors: Brien Anthony Holden, Arthur Ho, Padmaja Rajagopal Sankaridurg, Thomas Arthur Aller, Earl Leo Smith, III
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Patent number: 8911083Abstract: A system for facilitating contact lens design comprises an input unit for input of design parameters, and a processing unit for calculating a post-lens pressure profile based on the design parameters. The processing unit is arranged, in use, to perform a finite model calculation allowing for large deflection and non-linear geometry effects in the deformation of a model lens shape. Preferably the finite element model calculation utilizes solid elements of modelling the lens shape. A contact comprising a high Young's modulus material such as silicone hydrogel can be designed to have a maximum corneal or limbal post-lens pressure valve of less than 250 Pa.Type: GrantFiled: November 19, 2003Date of Patent: December 16, 2014Assignees: Vision CRC Limited, Novartis AGInventor: Geoffrey Brent
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Publication number: 20140132914Abstract: A contact lens for use in controlling or retarding the progression of myopia in an eye has a central optical zone approximating the normal diameter of the pupil of the eye that gives clear central vision at distance for the wearer. An annular peripheral optical zone that is substantially outside the diameter of the pupil is formed around the central optical zone with greater refractive power than that of the central zone so that oblique rays entering the eye through the peripheral optical zone will be brought to focus at a focal plane that is substantially on or anterior to the peripheral region of the retina. Preferably, the rear surface of the lens is shaped to conform to the cornea of the eye and the front surface of the lens is shaped to provide—in conjunction with the rear surface—the desired optical properties of the central and peripheral optical zones.Type: ApplicationFiled: January 23, 2014Publication date: May 15, 2014Applicant: Vision CRC LimitedInventors: Brien Anthony Holden, Arthur Ho, Padmaja Rajagopal Sankaridurg, Thomas Arthur Aller, Earl Leo Smith, III
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Patent number: 8672472Abstract: A contact lens (10) for use in controlling or retarding the progression of myopia in an eye has a central optical zone (20) approximating the normal diameter of the pupil of the eye (22) that gives clear central vision at distance for the wearer. An annular peripheral optical zone 24 that is substantially outside the diameter of the pupil is formed around the central optical zone (20) with greater refractive power than that of the central zone (22) so that oblique rays entering the eye through the peripheral optical zone (24) will be brought to focus at a focal plane that is substantially on or anterior to the peripheral region of the retina. Preferably, the rear surface (16) of the lens is shaped to conform to the cornea of the eye and the front surface (18) of the lens (10) is shaped to provide—in conjunction with the rear surface (16)—the desired optical properties of the central and peripheral optical zones.Type: GrantFiled: July 12, 2012Date of Patent: March 18, 2014Assignee: Vision CRC LimitedInventors: Brien Anthony Holden, Arthur Ho, Padmaja Rajagopal Sankaridurg, Thomas Arthur Aller, Earl Leo Smith, III
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Publication number: 20130297016Abstract: The present invention relates to a method of determining the IOL refractive index for an ocular replacement material for replacing tissue in the capsular bag comprising combining a neutral (non-correcting) reference refractive index (“NRRI”) of between 1.421 and 1.450 with a refractive index correction factor (“RICF”) ascertained by reference to the refractive power required to correct the patient's refractive error. The present invention also relates to methods of treating presbyopia, myopia and hyperopia using the above method.Type: ApplicationFiled: April 12, 2013Publication date: November 7, 2013Applicant: Vision CRC LimitedInventor: Vision CRC Limited
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Patent number: 8540365Abstract: An ophthalmic lens element is disclosed. The lens element includes a front surface and a rear surface, at least one which includes a horizontal meridian and a vertical meridian. A central region of the lens element includes a foveal vision zone providing a first power for providing clear foveal vision for a wearer. A peripheral region of positive power relative to the first power is also included. The peripheral region includes dual progressive zones located bilaterally of the vertical meridian and extending radially outwardly from the central region. The lens element provides a distribution of surface astigmatism which provides, on the horizontal meridian, a relatively low surface astigmatism in the central region and the progressive zones.Type: GrantFiled: October 23, 2008Date of Patent: September 24, 2013Assignee: Vision CRC LimitedInventor: Saulius Raymond Varnas
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Patent number: 8439974Abstract: The present invention relates to a method of determining the IOL refractive index for an ocular replacement material for replacing tissue in the capsular bag comprising combining a neutral (non-correcting) reference refractive index (“NRRI”) of between 1.421 and 1.450 with a refractive index correction factor (“RICF”) ascertained by reference to the refractive power required to correct the patient's refractive error. The present invention also relates to methods of treating presbyopia, myopia and hyperopia using the above method.Type: GrantFiled: May 3, 2007Date of Patent: May 14, 2013Assignee: Vision CRC LimitedInventors: Arthur Ho, Brien Anthony Holden, Fabrice Manns, Jean-Marie Arthur Parel
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Patent number: 8321184Abstract: Methods for describing the shape of a lens are disclosed comprising mathematically dividing said shape into substantially two halves and providing at least one mathematical function comprising mathematically linear combinations of polynomials, wherein at least one half is described by said mathematical function, and wherein said method is applicable to a surface of at least one half selected from the group consisting of rotationally symmetric surfaces and non-rotationally symmetric surfaces.Type: GrantFiled: February 25, 2009Date of Patent: November 27, 2012Assignee: Vision CRC LimitedInventor: Raksha Urs
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Patent number: 8260582Abstract: Methods are disclosed for characterizing an entire lens surface including anterior and posterior ‘hemispheres’ as well as the equatorial region as a single continuous mathematical representation by employing a summed serial function constituting incrementally higher orders of a base function and by utilizing a sufficiently high order of base function in the summation series to obtain the desired degree of accuracy of the representation.Type: GrantFiled: February 25, 2009Date of Patent: September 4, 2012Assignee: Vision CRC LimitedInventors: Arthur Ho, Raksha Urs
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Patent number: 8240847Abstract: A contact lens (10) for use in controlling or retarding the progression of myopia in an eye has a central optical zone (20) approximating the normal diameter of the pupil of the eye (22) that gives clear central vision at distance for the wearer. An annular peripheral optical zone 24 that is substantially outside the diameter of the pupil is formed around the central optical zone (20) with greater refractive power than that of the central zone (22) so that oblique rays entering the eye through the peripheral optical zone (24) will be brought to focus at a focal plane that is substantially on or anterior to the peripheral region of the retina. Preferably, the rear surface (16) of the lens is shaped to conform to the cornea of the eye and the front surface (18) of the lens (10) is shaped to provide—in conjunction with the rear surface (16)—the desired optical properties of the central and peripheral optical zones.Type: GrantFiled: June 5, 2007Date of Patent: August 14, 2012Assignee: Vision CRC LimitedInventors: Brien Anthony Holden, Arthur Ho, Padmaja Rajagopal Sankaridurg, Thomas Arthur Aller, Earl Leo Smith, III
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Publication number: 20110190467Abstract: The present invention relates to a macromonomer having a polydimethylsiloxane backbone that has a mol % dimethyl siloxanes, b mol % siloxanes substituted with -K-RIM, c mol % siloxanes substituted with -K-RIM-Z and d mol % siloxanes substituted with -L-Z, and in which the terminal siloxane groups are tri-substituted with R, wherein RIM is a refractive index modifying group; Z is a free radically polymerisable group; K is a spacer group; L is optional and is a spacer group; each R is independently selected from an RIM, a lower alkyl group, hydrogen or Z; and a is a molar percentage of the macromonomer which is in the range of from 0 to 95 mol %; b is a molar percentage of the macromonomer which is in the range of from 5 to 99 mol %; c is a molar percentage of the macromonomer which is in the range of from 0 to 2 mol %; and d is a molar percentage of the macromonomer which is in the range of from 0 to 2 mol %; with the proviso that c and d are not both 0 mol %.Type: ApplicationFiled: April 14, 2011Publication date: August 4, 2011Applicant: VISION CRC LIMITEDInventors: Timothy Charles Hughes, John Stuart Wilkie, Justine Leigh Jeffery, Xuan Thi Thanh Nguyen, Xiaojuan Hao
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Publication number: 20110037944Abstract: An ophthalmic lens element is disclosed. The lens element includes a front surface and a rear surface, at least one which includes a horizontal meridian and a vertical meridian. A central region of the lens element includes a foveal vision zone providing a first power for providing clear foveal vision for a wearer. A peripheral region of positive power relative to the first power is also included. The peripheral region includes dual progressive zones located bilaterally of the vertical meridian and extending radially outwardly from the central region. The lens element provides a distribution of surface astigmatism which provides, on the horizontal meridian, a relatively low surface astigmatism in the central region and the progressive zones.Type: ApplicationFiled: October 23, 2008Publication date: February 17, 2011Applicant: Vision CRC LimitedInventor: Saulius Raymond Varnas
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Patent number: 7766482Abstract: A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.Type: GrantFiled: March 6, 2009Date of Patent: August 3, 2010Assignee: Vision CRC LimitedInventors: Earl Leo Smith, III, Nelson Greeman, Jr., Patsy Greeman, legal representative, Arthur Ho, Brien Anthony Holden
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Publication number: 20090276042Abstract: The present invention relates to a macromonomer having a polydimethylsiloxane backbone that has a mol % dimethyl siloxanes, b mol % siloxanes substituted with -K-RIM, c mol % siloxanes substituted with -K-RIM-Z and d mol % siloxanes substituted with -L-Z, and in which the terminal siloxane groups are tri-substituted with R, wherein RIM is a refractive index modifying group; Z is a free radically polymerisable group; K is a spacer group; L is optional and is a spacer group; each R is independently selected from an RIM, a lower alkyl group, hydrogen or Z; and a is a molar percentage of the macromonomer which is in the range of from 0 to 95 mol %; b is a molar percentage of the macromonomer which is in the range of from 5 to 99 mol %; c is a molar percentage of the macromonomer which is in the range of from 0 to 2 mol %; and d is a molar percentage of the macromonomer which is in the range of from 0 to 2 mol %; with the proviso that c and d are not both 0 mol %.Type: ApplicationFiled: May 3, 2007Publication date: November 5, 2009Applicant: Vision CRC LimitedInventors: Timothy Charles Hughes, John Stuart Wilkie, Justine Leigh Jeffery, Xuan Thi Thanh Nguyen, Xiaojuan Hao
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Publication number: 20090161065Abstract: A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.Type: ApplicationFiled: March 6, 2009Publication date: June 25, 2009Applicant: VISION CRC LIMITEDInventors: Earl Leo Smith, III, Nelson Greeman, JR., Patsy Greeman, Arthur Ho, Brien Anthony Holden
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Patent number: 7503655Abstract: A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.Type: GrantFiled: February 7, 2006Date of Patent: March 17, 2009Assignee: Vision CRC LimitedInventors: Earl Leo Smith, III, Patsy Greeman, legal representative, Arthur Ho, Brien Anthony Holden, Nelson Greeman, Jr.
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Patent number: 7025460Abstract: A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.Type: GrantFiled: July 9, 2004Date of Patent: April 11, 2006Assignee: The Vision CRC LimitedInventors: Earl Leo Smitth, Patsy Greeman, legal representative, Arthur Ho, Brien Anthony Holden, Nelson Greeman, Jr., deceased