公开(公告)号：US12204180B2

公开(公告)日：2025-01-21

申请号：US17693493

申请日：2022-03-14

Applicant: Khalifa University of Science and Technology

Inventor： Haider Butt ,  Mohamed Elsherif

IPC: G02C7/04 ,  A61B5/00

Abstract: Embodiments of the present disclosure describe a biomarker-responsive bifocal contact lens comprising a monovision contact lens having a first focal length and a Fresnel contact lens having a second focal length, wherein the Fresnel contact lens comprises a biomarker-responsive hydrogel, and wherein the Fresnel contact lens is disposed on an outer surface of the monovision contact lens, wherein an optical characteristic of the Fresnel contact lens changes in response to the biomarker concentration in the ocular fluid.

公开(公告)号：US11899289B2

公开(公告)日：2024-02-13

申请号：US17307316

申请日：2021-05-04

Applicant: Khalifa University of Science and Technology

Inventor： Haider Butt ,  Mohamed Elsherif

IPC: G02C7/04 ,  G02C7/02 ,  G02C7/10 ,  B29D11/00 ,  B29L11/00

CPC classification number: G02C7/049 ,  B29D11/00038 ,  G02C7/024 ,  G02C7/108 ,  B29L2011/0041 ,  G02C2202/10

Abstract: An ophthalmic contact lens configured to treat color vision deficiency is presented herein. The contact lens includes a tinted region containing either or both of a first dye that is configured to absorb at least 50% of incident light in a spectral band between 480 nanometers to 500 nanometers and a second dye that is configured to absorb at least 50% of incident light in a spectral band between 550 nanometers to 580 nanometers. A method of manufacturing such a contact lens and a process of forming an ophthalmic contact lens by an additive manufacturing process is also presented.

公开(公告)号：US12140820B2

公开(公告)日：2024-11-12

申请号：US17499251

申请日：2021-10-12

Applicant: Khalifa University of Science and Technology

Inventor： Haider Butt ,  Fahad Alam

IPC: G02C7/04 ,  B29D11/00 ,  B33Y80/00 ,  G02B1/12

Abstract: A method of forming an ophthalmic contact lens using an additive manufacturing apparatus is presented herein. The method providing a first solution comprising HEMA, PEGDA, and a photoinitiator, forming a support structure on a planar print bed of the additive manufacturing apparatus by depositing a first plurality of layers of the first solution and curing the first plurality of layers, and forming an ophthalmic contact lens on the support structure by depositing a second plurality of layers of the first solution and curing the second plurality of layers. The second plurality of layers are arranged such that a disc of the ophthalmic contact lens is oriented generally perpendicular to the planar print bed of the additive manufacturing apparatus.

公开(公告)号：US12071529B2

公开(公告)日：2024-08-27

申请号：US18086741

申请日：2022-12-22

Applicant: Khalifa University of Science and Technology

Inventor： Haider Butt ,  Ahmed E. Salih

IPC: C08K3/08 ,  B29D11/00 ,  G02B1/04

CPC classification number: C08K3/08 ,  B29D11/00125 ,  G02B1/043 ,  C08K2003/0806 ,  C08K2201/003 ,  C08K2201/011 ,  C08K2201/013

Abstract: A method of incorporating nanoparticles into a contact lens includes contacting the contact lens with a solvent sufficient to remove liquid from the contact lens and contacting the contact lens with colloidal nanoparticles sufficient to transfer nanoparticles from the colloidal nanoparticles to the contact lens.

公开(公告)号：US11666214B2

公开(公告)日：2023-06-06

申请号：US17476016

申请日：2021-09-15

Applicant: Khalifa University of Science and Technology ,  The University of Birmingham

Inventor： Haider Butt ,  Khamis Essa ,  Matt Soanes ,  Nader Vahdati

IPC: A61B3/16 ,  A61B5/00

CPC classification number: A61B3/16 ,  A61B5/7275

Abstract: Methods and systems for measuring the intraocular pressure of an eye in a human. The methods include directing an acoustic incident wave at the surface of the eye to generate a reflected wave, measuring the coefficient of reflection of the incident and reflected waves, and determining the intraocular pressure of the eye from the coefficient of reflection. Also disclosed are methods of diagnosing glaucoma and/or intraocular hypertension.

公开(公告)号：US11143815B1

公开(公告)日：2021-10-12

申请号：US16848698

申请日：2020-04-14

Applicant: Khalifa University of Science and Technology ,  The University of Birmingham

Inventor： Haider Butt ,  Mohamed Elsherif

IPC: G02B6/02 ,  G02B3/00 ,  B29D11/00 ,  G02B6/32 ,  F21V8/00 ,  G02B6/12

Abstract: Embodiments include a fiber optic probe comprising an optical fiber, and a sensor component attached to the optical fiber, the sensor component including an asymmetric microlens array imprinted on a stimuli-responsive hydrogel. Embodiments further include a method of fabricating a fiber optic probe comprising depositing a stimuli-responsive hydrogel precursor solution on a substrate mold, the substrate mold including a concave asymmetric microlens array; contacting an end of an optical fiber with the stimuli-responsive hydrogel precursor solution deposited on the substrate mold; and exposing the end of the optical fiber and the stimuli-responsive hydrogel precursor solution to light to form a stimuli-responsive hydrogel sensor imprinted with a convex asymmetric microlens array and attached to the end of the optical fiber. Embodiments further include systems comprising the fiber optic probes.