Patents by Inventor Ritu Shrestha
Ritu Shrestha has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20220142770Abstract: Embodiments of a modulable absorption light adjustable lens (MALAL) comprise a light adjustable lens that is capable of changing its optical properties upon an adjusting irradiation, including a photo-modifiable material; and a modulable absorption front protection layer, including a modulable absorption compound whose absorption properties can be modulated with a modulating stimulus. Other embodiments include a method of adjusting an optical property of a modulable absorption light adjustable lens, the method comprising: reducing an absorption of a modulable absorption compound of a modulable absorption front protection layer of the MALAL by a modulating stimulus, the MALAL having been previously implanted into an eye; and changing an optical property of a light adjustable lens of the MALAL by applying an adjusting irradiation.Type: ApplicationFiled: January 25, 2022Publication date: May 12, 2022Inventors: Ilya Goldshleger, John Kondis, Ritu Shrestha
-
Patent number: 11266495Abstract: Embodiments of a modulable absorption light adjustable lens (MALAL) comprise a light adjustable lens that is capable of changing its optical properties upon an adjusting irradiation, including a photo-modifiable material; and a modulable absorption front protection layer, including a modulable absorption compound whose absorption properties can be modulated with a modulating stimulus. Other embodiments include a method of adjusting an optical property of a modulable absorption light adjustable lens, the method comprising: reducing an absorption of a modulable absorption compound of a modulable absorption front protection layer of the MALAL by a modulating stimulus, the MALAL having been previously implanted into an eye; and changing an optical property of a light adjustable lens of the MALAL by applying an adjusting irradiation.Type: GrantFiled: October 20, 2019Date of Patent: March 8, 2022Assignee: RxSight, Inc.Inventors: Ilya Goldshleger, John Kondis, Ritu Shrestha
-
Publication number: 20210322152Abstract: A composite light adjustable intraocular lens can include an acrylic intraocular insert; a silicone-based light adjustable lens, attached to the acrylic intraocular insert with an adhesion promoter; and haptics; wherein the adhesion promoter includes a first orthogonal functional group, configured to bond with an acrylic component of the acrylic intraocular insert; and a second orthogonal functional group, configured to bond with a silicone component of the silicone-based light adjustable lens.Type: ApplicationFiled: April 15, 2020Publication date: October 21, 2021Applicant: RxSight, Inc.Inventors: Ritu Shrestha, Ilya Goldshleger, John Kondis, Ronald M. Kurtz
-
Publication number: 20210251744Abstract: A composite light adjustable intraocular lens comprises an acrylic diffractive intraocular lens, having a diffractive structure and haptics; and a silicone light adjustable lens, attached to the acrylic diffractive intraocular lens. The diffractive structure produces constructive interference in at least four consecutive diffractive orders corresponding a range of vision between near and distance vision, wherein the constructive interference produces a near focal point, a distance focal point corresponding to the base power of the ophthalmic lens, and an intermediate focal point between the near focal point and the distance focal point and wherein a diffraction efficiency of at least one of the diffractive orders is suppressed to less than ten percent.Type: ApplicationFiled: February 21, 2021Publication date: August 19, 2021Applicant: RxSight, Inc.Inventors: Ilya Goldshleger, John Kondis, Ronald M. Kurtz, Ritu Shrestha
-
Publication number: 20210113328Abstract: Embodiments of a modulable absorption light adjustable lens (MALAL) comprise a light adjustable lens that is capable of changing its optical properties upon an adjusting irradiation, including a photo-modifiable material; and a modulable absorption front protection layer, including a modulable absorption compound whose absorption properties can be modulated with a modulating stimulus. Other embodiments include a method of adjusting an optical property of a modulable absorption light adjustable lens, the method comprising: reducing an absorption of a modulable absorption compound of a modulable absorption front protection layer of the MALAL by a modulating stimulus, the MALAL having been previously implanted into an eye; and changing an optical property of a light adjustable lens of the MALAL by applying an adjusting irradiation.Type: ApplicationFiled: October 20, 2019Publication date: April 22, 2021Applicant: RxSight, Inc.Inventors: Ilya Goldshleger, John Kondis, Ritu Shrestha
-
Patent number: 10966819Abstract: A composite light adjustable intraocular lens, can include an intraocular lens (IOL), a light adjustable lens, attached to the intraocular lens, and haptics. In some cases, a composite light adjustable intraocular lens can include an intraocular lens, and haptics, attached to the IOL with light-adjustable hinges. A method of adjusting an implanted composite light adjustable intraocular lens can include planning a targeted optical outcome of an implantation of the composite light adjustable intraocular lens into an eye; implanting, the composite light adjustable intraocular lens into the eye; performing a diagnostic measurement to evaluate an implanted optical outcome of the implantation; determining a correction based on a comparison of the planned optical outcome and the implanted optical outcome; and applying a stimulus to adjust an optical characteristic of the composite light adjustable intraocular lens to induce the determined correction.Type: GrantFiled: May 29, 2017Date of Patent: April 6, 2021Assignee: RxSight, Inc.Inventors: Ilya Goldshleger, John Kondis, Ronald M. Kurtz, Ritu Shrestha, Gergely T. Zimanyi
-
Patent number: 10449740Abstract: The present invention generally relates to a method for producing silicone hydrogel contact lenses having a stable lubricious coating thereon without involving use of organic solvent in post-curing processes.Type: GrantFiled: December 13, 2016Date of Patent: October 22, 2019Assignee: Novartis AGInventors: Xinming Qian, Jared Nelson, Robert Carey Tucker, Steve Yun Zhang, Daqing Wu, Leroy Wainaina Muya, Dharmesh Patel, Zach Munoz, Yongxing Qiu, Chung-Yuan Chiang, Ritu Shrestha, Kelly Kayi Tallau
-
Patent number: 10364365Abstract: The present invention provides an actinically or thermally curable ink for making colored silicone hydrogel contact lenses. The ink of the invention comprises at least a pigment, a polymeric dispersant, a solvent and an actinically or thermally curable silicone-containing binder polymer including ethylenically unsaturated groups and segments derived from at least one silicone-containing vinylic monomer or macromere. The ink of the invention is characterized by having capability to be cured actinically or thermally to form a colored coat on a silicone hydrogel contact lens, wherein the ink is characterized by having an longer print life using a pad-printing system by at least 30% comparing to the ink which has the same composition except of no polymeric dispersant, wherein ink life is a number of printed parts that can be achieved in a print cycle.Type: GrantFiled: November 10, 2016Date of Patent: July 30, 2019Assignee: Novartis AGInventors: Richard Charles Breitkopf, Ellen A. Day, Yongxing Qiu, Ritu Shrestha
-
Publication number: 20180338827Abstract: A composite light adjustable intraocular lens, can include an intraocular lens (IOL), a light adjustable lens, attached to the intraocular lens, and haptics. In some cases, a composite light adjustable intraocular lens can include an intraocular lens, and haptics, attached to the IOL with light-adjustable hinges. A method of adjusting an implanted composite light adjustable intraocular lens can include planning a targeted optical outcome of an implantation of the composite light adjustable intraocular lens into an eye; implanting, the composite light adjustable intraocular lens into the eye; performing a diagnostic measurement to evaluate an implanted optical outcome of the implantation; determining a correction based on a comparison of the planned optical outcome and the implanted optical outcome; and applying a stimulus to adjust an optical characteristic of the composite light adjustable intraocular lens to induce the determined correction.Type: ApplicationFiled: May 29, 2017Publication date: November 29, 2018Applicant: RxSight, Inc.Inventors: Ilya Goldshleger, John Kondis, Ronald M. Kurtz, Ritu Shrestha, Gergely T. Zimanyi
-
Publication number: 20170183520Abstract: The present invention provides an actinically or thermally curable ink for making colored silicone hydrogel contact lenses. The ink of the invention comprises at least a pigment, a polymeric dispersant, a solvent and an actinically or thermally curable silicone-containing binder polymer including ethylenically unsaturated groups and segments derived from at least one silicone-containing vinylic monomer or macromere. The ink of the invention is characterized by having capability to be cured actinically or thermally to form a colored coat on a silicone hydrogel contact lens, wherein the ink is characterized by having an longer print life using a pad-printing system by at least 30% comparing to the ink which has the same composition except of no polymeric dispersant, wherein ink life is a number of printed parts that can be achieved in a print cycle.Type: ApplicationFiled: November 10, 2016Publication date: June 29, 2017Inventors: Richard Charles Breitkopf, Ellen A. Day, Yongxing Qiu, Ritu Shrestha
-
Publication number: 20170165932Abstract: The present invention generally relates to a method for producing silicone hydrogel contact lenses having a stable lubricious coating thereon without involving use of organic solvent in post-curing processes.Type: ApplicationFiled: December 13, 2016Publication date: June 15, 2017Inventors: Xinming Qian, Jared Nelson, Robert Carey Tucker, Steve Yun Zhang, Daqing Wu, Leroy Wainaina Muya, Dharmesh Patel, Zach Munoz, Yongxing Qiu, Chung-Yuan Chiang, Ritu Shrestha, Kelly Kayi Tallau
-
Patent number: 9389336Abstract: Provided herein is a polymerized product formed of a polymerized monomer mixture comprising intentionally added water and at least one hydrophilic monomer wherein the monomer mix does not contain any silicon containing materials. The polymerized monomer mixture of the invention herein is useful in many biomaterial applications. Especially preferred is the use of the biomaterial as a hydrogel contact lens.Type: GrantFiled: August 2, 2013Date of Patent: July 12, 2016Assignee: Bausch & Lomb IncorporatedInventors: Ritu Shrestha, Alok K. Awasthi, Lynn F. Atwater, Jay Friedrich Kunzler, Richard Fanqing Meng
-
Publication number: 20140034519Abstract: Provided herein is a polymerized product formed of a polymerized monomer mixture comprising intentionally added water and at least one hydrophilic monomer wherein the monomer mix does not contain any silicon containing materials. The polymerized monomer mixture of the invention herein is useful in many biomaterial applications. Especially preferred is the use of the biomaterial as a hydrogel contact lens.Type: ApplicationFiled: August 2, 2013Publication date: February 6, 2014Applicant: Bausch & Lomb IncorporatedInventors: Ritu Shrestha, Alok K. Awasthi, Lynn F. Atwater, Jay Friedrich Kunzler, Richard Fanqing Meng