FREEFORM CONTACT LENSES FOR MYOPIA MANAGEMENT

    公开(公告)号:US20230102797A1

    公开(公告)日:2023-03-30

    申请号:US17799592

    申请日:2021-02-06

    IPC分类号: G02C7/04

    摘要: The present disclosure relates to a contact lens for managing myopia wherein the contact lens comprises of an optical zone about an optical axis and a non-optical peripheral carrier zone about the optical zone; wherein the optical zone is configured with a substantially single vision power profile providing correction for the eye, and a decentred second region configured with one or more meridionally and azimuthally variant power distributions, wherein at least one of the meridionally and azimuthally variant power distribution is devoid of mirror symmetry, the second region located substantially away from the optical centre and configured to provide at least in part a regional conoid of partial blur producing an optical stop signal for the eye; and wherein the non-optical peripheral carrier zone is configured with a thickness profile that is substantially rotationally symmetric to further provide a temporally and spatially varying stop signals to reduce myopia progression.

    ORTHOKERATOLOGY LENS WITH ASPHERIC STRUCTURE IN REVERSE CURVE

    公开(公告)号:US20210109377A1

    公开(公告)日:2021-04-15

    申请号:US17125473

    申请日:2020-12-17

    IPC分类号: G02C7/04

    摘要: An orthokeratology lens is disclosed. A central optical zone is formed on an outer surface and an inner surface of the orthokeratology lens and can pass light to clearly focus on a central area of retina of eyeball; peripheral optical zones surround the central optical zone and can pass light to focus on a peripheral blurring area around the central area; a central part of the inner surface includes a base curve with eccentricity in range of 0 to 4, and a reverse curve, an alignment curve and a peripheral curve disposed outside the base curve in an outward order. A junction between the base curve and the reverse curve has a crossover point formed thereon, and a straight-line distance from the cornea of the eye ball to the crossover point between the base curve and the reverse curve is in range of 89 μm to 189 μm.

    MULTI-CURVE MULTI-SECTION ALIGNMENT STRUCTURE FOR ORTHOKERATOLOGY LENS AND METHOD THEREOF

    公开(公告)号:US20220082862A1

    公开(公告)日:2022-03-17

    申请号:US17022981

    申请日:2020-09-16

    IPC分类号: G02C7/04

    摘要: A multi-curve multi-section alignment structure for an orthokeratology lens and a method thereof are disclosed. The orthokeratology lens includes a base curve formed on a central part of an inner surface thereof, and a reverse curve outwardly formed outside the base curve, an alignment curve outwardly formed outside the reverse curve and configured to align to a cornea of an eyeball, and a peripheral curve outwardly formed outside the alignment curve. The cornea has an alignment region contacting the alignment curve, and the alignment region is divided into sections, and the alignment curve includes alignment sections formed correspondingly in position to the sections and matching curvatures of the sections of the alignment region, so that the orthokeratology lens can be stably aligned with the eyeball, and when a wearer's eyelid is closed, the orthokeratology lens cannot decenter easily.

    PROCESS FOR PREPARING CONTACT LENS WITH FILM BY PLASMA ENHANCED CHEMICAL VAPOR DEPOSITION

    公开(公告)号:US20190310494A1

    公开(公告)日:2019-10-10

    申请号:US16298291

    申请日:2019-03-11

    摘要: The process for preparing contact lens with films by plasma enhanced chemical vapor deposition to apply plasma modification on contact lens to form hydrophilic functional groups on the surface of contact lens, and then respectively heating PEGMA and NVP into a gaseous state, and depositing the gaseous PEGMA and NVP on the substrate by means of PECVD so as to form the thin film on the substrate. By means of the thin film, the contact lens can reveal stable hydrophilicity and anti-fouling properties, so when the patient wear the contact lens, he or she does not feel uncomfortable foreign body sensation, significantly reducing the deposition of proteins and corneal infection risk.

    ASPHERIC LENS USING E-VALUE TO CONTROL EYE BALL GROWTH RATE

    公开(公告)号:US20220221736A1

    公开(公告)日:2022-07-14

    申请号:US17707131

    申请日:2022-03-29

    IPC分类号: G02C7/04 G02C7/06

    摘要: An aspheric lens includes a treatment zone through which light passes to image at the retina of eyeball and a positioning zone of non-visual area outside treatment zone. The treatment zone includes a base curve and a reverse curve formed on outside of base curve. The positioning zone includes an alignment curve and a peripheral curve located outside alignment curve. A center point is formed in center of base curve, the junction of base curve and reverse curve forms a first point of intersection, the junction of reverse curve and alignment curve forms a second point of intersection, and the junction of alignment curve and peripheral curve forms a third point of intersection. The linear distance between the center point and the cornea of the preset eyeball is between 9 μm˜21 μm. The linear distance between the first point of intersection and the cornea of the preset eyeball is between 89 μm˜189 μm.

    ASPHERIC LENS CAPABLE OF USING MONOCULAR RETINAL RIVALRY TO CONTROL AXIAL LENGTH GROWN RATE

    公开(公告)号:US20200341296A1

    公开(公告)日:2020-10-29

    申请号:US16925693

    申请日:2020-07-10

    IPC分类号: G02C7/04 G02C7/02

    摘要: An aspheric lens capable of using monocular retinal rivalry effect to control axial length grown rate is disclosed. The aspheric lens includes an optical area for making retina of a wearer's eyeball occur monocular retinal rivalry phenomenon. When the lens is worn on the wearer's eyeball, the retina of eyeball can occur monocular retinal rivalry phenomenon, so that eyeball growth rate can be controlled by monocular retinal rivalry phenomenon, thereby effectively slowing myopia or hyperopia progression, to achieve the effect of correcting and improving myopia or hyperopia.

    INSPECTION METHOD FOR THE POSITIONING POINT OF A CONTACT LENS

    公开(公告)号:US20200096415A1

    公开(公告)日:2020-03-26

    申请号:US16136656

    申请日:2018-09-20

    发明人: I-Tsung WU

    IPC分类号: G01M11/02 G02C7/04

    摘要: An inspection method for the positioning point of a contact lens is disclosed. In the inspection method, a trial lens comprising inspection points is worn on a patient's eye, and a camera device shoots an eye wearing the trial lens to obtain the shot content, and an electronic device calculates the distances from the limbus of the eye to the inspection points according to the shot content, so as to obtain the position of the positioning point of the eye on the trial lens, and the contact lens is made according to the position of the positioning point, so that an optical center of the contact lens can match the visual axis of the eye. During the inspection process, the eye sight is not blocked or affected by any object, thereby improving accuracy of the inspection for the positioning point.

    LENS WITH STAR-SHAPED OPTICAL ZONE TO INCREASE DEFOCUS IMAGE AREA

    公开(公告)号:US20190369412A1

    公开(公告)日:2019-12-05

    申请号:US15993995

    申请日:2018-05-31

    发明人: I-Tsung WU

    IPC分类号: G02C7/04 G02B7/04

    摘要: A lens with star-shaped optical zone to increase defocus image area is disclosed. The lens includes a central optical area to pass light to image on central imaging area of retina; a peripheral optical area formed around the central optical area and configured to pass light to image on a peripheral image blurring area on peripheral of the central imaging area; a star-shaped optical zone formed on the surface of the central optical area and configured to pass light to clearly image on the central imaging area; and a defocus area formed on a portion of the central optical area other than the optical zone. The defocus area can be used to increase defocus image area of the central imaging area, to extend a range of the optical area having defocus effect on the retina without the need to excessively increasing the defocus power of the lens.

    Contact lens having a moiré structure, contact lens moiré structure processing method

    公开(公告)号:US10216007B2

    公开(公告)日:2019-02-26

    申请号:US15207791

    申请日:2016-07-12

    发明人: I-Tsung Wu

    摘要: Contact lens includes central optical zone for clearly focusing image of incident light onto retina clear central image region of user's eyeball and peripheral optical zone surrounding central optical zone, and one or multiple moiré portions located on peripheral optical zone for focusing the image of incident light onto peripheral out-of focus region of retina of user's eyeball. The moiré portions are processed by: using an aberrometer to measure aberration of retina of user's eyeball and to further generate a three-dimensional image map, dividing the three-dimensional image map into clear central image region and peripheral out-of focus region, and then using an aberration correction software to calculate the power of sphere and the power and axis of cylinder on contact lens and then inputting the three-dimensional image map into processing machine for enabling the processing machine process the desired moiré portions on contact lens according to the three-dimensional image map.

    ORTHOKERATOLOGY LENS USING ASPHERIC E-VALUE TO CONTROL TEAR HEIGHT TO SLOW DOWN THE GROWTH RATE OF THE EYEBALL

    公开(公告)号:US20220291524A1

    公开(公告)日:2022-09-15

    申请号:US17829999

    申请日:2022-06-01

    IPC分类号: G02C7/04 G02C7/06

    摘要: Orthokeratology lens that uses aspheric E value to control tear height to sloe down the growth rate of the eyeball. The lens includes treat treatment zone through which light passes to image at retina of eyeball and positioning zone of non-visual area outside treatment zone. The treatment zone includes base curve and reverse curve formed on outside of base curve. The positioning zone includes alignment curve and peripheral curve located outside alignment curve, Center point is formed in center of base curve, junction of base curve and reverse curve forms first point of intersection, junction of reverse curve and alignment curve forms second point of intersection, and junction of alignment curve and peripheral curve forms third point of intersection. Linear distance between center point and cornea of preset eyeball is between 9 μm and 21 μm, Linear distance between first point of intersection and cornea of preset eyeball is between 89 μm and 1189 μm.