CN114994950A - Defocusing soft contact lens - Google Patents
Defocusing soft contact lens Download PDFInfo
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- CN114994950A CN114994950A CN202210808019.3A CN202210808019A CN114994950A CN 114994950 A CN114994950 A CN 114994950A CN 202210808019 A CN202210808019 A CN 202210808019A CN 114994950 A CN114994950 A CN 114994950A
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- China
- Prior art keywords
- optical zone
- contact lens
- zone
- optical
- compensation value
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000003287 optical effect Effects 0.000 claims abstract description 107
- 230000004379 myopia Effects 0.000 claims abstract description 25
- 208000001491 myopia Diseases 0.000 claims abstract description 25
- 230000001225 therapeutic effect Effects 0.000 claims abstract description 22
- 239000000017 hydrogel Substances 0.000 claims description 6
- 239000007779 soft material Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 210000001525 retina Anatomy 0.000 abstract description 7
- 230000004323 axial length Effects 0.000 abstract description 2
- 230000004515 progressive myopia Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229930003347 Atropine Natural products 0.000 description 1
- 208000002177 Cataract Diseases 0.000 description 1
- 208000010412 Glaucoma Diseases 0.000 description 1
- RKUNBYITZUJHSG-UHFFFAOYSA-N Hyosciamin-hydrochlorid Natural products CN1C(C2)CCC1CC2OC(=O)C(CO)C1=CC=CC=C1 RKUNBYITZUJHSG-UHFFFAOYSA-N 0.000 description 1
- 206010034960 Photophobia Diseases 0.000 description 1
- 201000007737 Retinal degeneration Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- RKUNBYITZUJHSG-SPUOUPEWSA-N atropine Chemical compound O([C@H]1C[C@H]2CC[C@@H](C1)N2C)C(=O)C(CO)C1=CC=CC=C1 RKUNBYITZUJHSG-SPUOUPEWSA-N 0.000 description 1
- 229960000396 atropine Drugs 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 208000014733 refractive error Diseases 0.000 description 1
- 230000004258 retinal degeneration Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
- G02C2202/24—Myopia progression prevention
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Abstract
The invention discloses a defocused soft contact lens, which comprises: a contact lens body having a first corrective optical zone, a second therapeutic optical zone, a third corrective optical zone, a fourth therapeutic optical zone, and a fifth wearing engagement zone; the optical power of the first correction optical area is the same as that of the third correction optical area, and the first correction optical area and the third correction optical area are used for correcting the myopia power; the optical power of the second treatment optical area and the fourth treatment optical area is changed in a defocusing way. According to the invention, the myopia degree is corrected through the first correction optical zone and the third correction optical zone, and the second treatment optical zone and the fourth treatment optical zone generate the 'myopia out-of-focus' luminosity, so that the myopia out-of-focus is manufactured on the retina, the axial length of the eye is effectively controlled, the effect of slowing down the myopia deepening is achieved, and the wearing of a user is comfortable.
Description
Technical Field
The invention belongs to the technical field of contact lenses, and particularly relates to a defocusing soft contact lens.
Background
Myopia is currently the most common refractive error in children and adolescents in most parts of the world. In addition, the age of onset of myopia is getting smaller in many countries, and earlier onset ages may accelerate myopia progression, which in turn increases the severity of myopia and increases the risk of associated eye diseases such as cataracts, glaucoma, retinal degeneration, and the like. The design of the contact lens with the function of controlling the progression of myopia is expected to slow down the progression of myopia of children and teenagers, and has potential application value.
Current methods of controlling myopia progression include atropine, orthokeratology, bifocal or progressive multifocal frame glasses, and bifocal or multifocal contact lenses. There are certain disadvantages and side effects, such as eye photophobia, loss of accommodation, discomfort, infection risk and dizziness.
The hong kong university of science proposed a bifocal contact lens, which is now commercialized, that has been demonstrated to have the ability to control myopia progression, but the peripheral myopic defocus provided by this contact lens is only 2D, and clinical studies have shown that larger peripheral myopic defocus can control myopia progression more effectively, but the peripheral myopic defocus provided by existing contact lens designs does not substantially exceed 4D, and still remains to be increased. Furthermore, there is a lack of clear relationship between the design parameters of the contact lens and the magnitude of defocus at the periphery of the eye. Accordingly, the present invention is directed to a multi-zone contact lens with myopia progression control that provides greater peripheral myopic defocus to address the deficiencies of the prior art.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a soft out-of-focus contact lens, which is used for avoiding the trouble of myopia degree deepening caused by wearing discomfort in the aspect of myopia control of the conventional contact lens.
In order to solve the above technical problems, the present invention discloses a soft out-of-focus contact lens, comprising:
a contact lens body having a first corrective optical zone, a second therapeutic optical zone, a third corrective optical zone, a fourth therapeutic optical zone, and a fifth wearing engagement zone; the optical power of the first correction optical area is the same as that of the third correction optical area, and the first correction optical area and the third correction optical area are used for correcting the myopia power; the optical power of the second treatment optical area and the fourth treatment optical area is out-of-focus variation; the contact lens body is respectively provided with a far compensation value reference point and a near compensation value reference point; the reference point of the remote compensation value is positioned 1.2mm above the center of the lens, and the defocus compensation value is 1.00D-3.50D; the near compensation value reference point is positioned 1.4mm below the center of the lens, and the defocusing compensation value is 0.80D-2.00D; the defocus compensation value of the horizontal side regions of the first corrective optical zone 10 and the second corrective optical zone 30 is 50% to 80% of the reference point of the near compensation value.
According to an embodiment of the present invention, the first corrective optical zone, the second therapeutic optical zone, the third corrective optical zone, the fourth therapeutic optical zone and the fifth fitting optical zone are concentrically arranged and arranged from the inside to the outside.
According to an embodiment of the present invention, the defocus amount of the second treatment optical zone and the fourth treatment optical zone increases as the concentric circles extend outward, and the diopter ranges from +1.00D to + 3.00D.
According to an embodiment of the present invention, the diameter of the first corrective optical zone is 3 mm.
According to an embodiment of the present invention, the thickness of the contact lens body is 0.1 mm.
According to an embodiment of the present invention, the contact lens body is made of any one selected from hydrogel, silicone hydrogel or gas-permeable soft material.
Compared with the prior art, the invention can obtain the following technical effects:
the myopia degree is corrected through the first optical zone of correcting and the third optical zone of correcting, and the second is treated optical zone and is treated the luminosity that the optical zone produced "myopia out of focus" with the fourth, makes myopia out of focus on the retina, and effective control eye axis length reaches the effect that slows down myopia and deepens, and the user wears comfortablely.
Of course, it is not necessary for any one product to achieve all of the above technical effects simultaneously in order to practice the present invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a defocused soft contact lens according to an embodiment of the present invention.
Reference numerals
A first corrective optical zone 10, a second therapeutic optical zone 20, a third corrective optical zone 30, a fourth therapeutic optical zone 40, and a fifth mating zone 50.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.
Referring to fig. 1, fig. 1 is a schematic view of a defocused soft contact lens according to an embodiment of the present invention.
As shown, a defocused soft contact lens, comprising: a contact lens body having a first corrective optical zone 10, a second therapeutic optical zone 20, a third corrective optical zone 30, a fourth therapeutic optical zone 40, and a fifth fitting interface zone 50; the optical power of the first corrective optical zone 10 and the third corrective optical zone 30 is the same for correcting the myopia power; the optical power of the second treatment optical zone 20 and the fourth treatment optical zone 40 is a defocus variation. The contact lens body is respectively provided with a far compensation value reference point and a near compensation value reference point; the reference point of the remote compensation value is positioned 1.2mm above the center of the lens, and the defocus compensation value is 1.00D-3.50D; the near compensation value reference point is positioned 1.4mm below the center of the lens, and the defocusing compensation value is 0.80D-2.00D; the defocus compensation value of the horizontal side regions of the first corrective optical zone 10 and the second corrective optical zone 30 is 50% to 80% of the reference point of the near compensation value.
In one embodiment of the present invention, the contact lens body is divided into an optical zone and a blend zone from the inner center to the outer periphery, wherein the optical zone includes a first corrective optical zone 10, a second corrective optical zone 20, a third corrective optical zone 30, and a fourth corrective optical zone 40, thereby achieving myopia prevention and control. And the connection area is set as the fifth wearing connection area 50 at the outermost circle to complete wearing connection.
In a preferred embodiment, the first corrective optical zone 10, the second therapeutic optical zone 20, the third corrective optical zone 30, the fourth therapeutic optical zone 40, and the fifth fitting optical zone 50 are arranged in concentric circles, in this order from the inside to the outside. The concentric circle design can better fit the retina of the eye, and in addition, the imaging of the external object is completely and perfectly focused on the retina.
Specifically, the optical powers of the first corrective optical zone 10 and the third corrective optical zone 30 are the same and are the myopia powers required by the user for correcting the myopia powers, and can be customized for different users. The optical power of the second therapeutic optical zone 20 and the optical power of the fourth therapeutic optical zone 40 are out of focus, so that the peripheral image moves forward and moves to the retina or even in front of the retina, the visual field is clearer, the axial length of the eye is effectively controlled, the effect of slowing down the myopia is achieved, and the user wears the optical power of the second therapeutic optical zone 20 and the fourth therapeutic optical zone 40 comfortably.
Preferably, the defocus amount of the second treatment optical zone 20 and the fourth treatment optical zone 40 increases as the concentric circles extend outwards, and the diopter ranges from +1.00D to +3.00D, so that the application range is wide.
In addition, in one embodiment, the first corrective optical zone 10 has a diameter of 3mm, fits the eye of the human body, and meets the eye requirements. The thickness of the contact lens body is 0.1mm, and the contact lens is comfortable to wear.
It is worth mentioning that the contact lens body is made of any one of hydrogel, silicon hydrogel or air-permeable soft material, and the wearing comfort is strong.
In summary, the invention corrects the myopia degree through the first correction optical zone and the third correction optical zone, and the second treatment optical zone and the fourth treatment optical zone generate the 'myopia out-of-focus' luminosity, so as to manufacture the myopia out-of-focus on the retina, effectively control the length of the axis of the eye, achieve the effect of slowing down the myopia deepening, and make the user comfortable to wear.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A defocused soft contact lens, comprising:
a contact lens body having a first corrective optical zone, a second therapeutic optical zone, a third corrective optical zone, a fourth therapeutic optical zone, and a fifth wearing engagement zone; the optical power of the first correction optical zone and the third correction optical zone is the same, and the first correction optical zone and the third correction optical zone are used for correcting myopia power; the optical power of the second treatment optical zone and the fourth treatment optical zone is out-of-focus variation; the contact lens body is respectively provided with a far compensation value reference point and a near compensation value reference point; the reference point of the remote compensation value is positioned 1.2mm above the assembly center of the lens, and the defocus compensation value is 1.00D-3.50D; the near compensation value reference point is 1.4mm below the assembly center, and the defocusing compensation value is 0.80D-2.00D; the defocusing compensation value of the horizontal two side areas of the first correction optical area and the second correction optical area is 50-80% of the reference point of the near compensation value.
2. A defocused soft contact lens according to claim 1, wherein said first corrective optical zone, second therapeutic optical zone, third corrective optical zone, fourth therapeutic optical zone, and fifth wearing engagement zone are arranged concentrically and sequentially from inside to outside.
3. The defocused soft contact lens according to claim 1, wherein the defocused amount of the second therapeutic optical zone and the fourth therapeutic optical zone increases as concentric circles extend outwards, and the diopter ranges from +1.00D to + 3.00D.
4. A defocused soft contact lens as claimed in claim 1, wherein said first corrective optical zone is 3mm in diameter.
5. A defocused soft contact lens as claimed in claim 1, wherein said contact lens body thickness is 0.1 mm.
6. A soft out of focus contact lens according to claim 1, wherein the contact lens body is made of any one of hydrogel, silicone hydrogel or gas permeable soft material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210808019.3A CN114994950A (en) | 2022-07-11 | 2022-07-11 | Defocusing soft contact lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210808019.3A CN114994950A (en) | 2022-07-11 | 2022-07-11 | Defocusing soft contact lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114994950A true CN114994950A (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210808019.3A Pending CN114994950A (en) | 2022-07-11 | 2022-07-11 | Defocusing soft contact lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114994950A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407342A (en) * | 2018-12-12 | 2019-03-01 | 南开大学 | A kind of multizone contact lenses and application method with control mypia progression performance |
| CN213182237U (en) * | 2020-10-13 | 2021-05-11 | 江苏明世光学科技有限公司 | Personalized peripheral myopic out-of-focus spectacle lens |
| CN213814173U (en) * | 2020-09-22 | 2021-07-27 | 江苏明世光学科技有限公司 | Peripheral myopic out-of-focus lens for enhancing close-distance reading compliance |
| CN215678948U (en) * | 2021-08-29 | 2022-01-28 | 苏州明世光学科技有限公司 | Out-of-focus spectacle lens suitable for teenager myopia control |
-
2022
- 2022-07-11 CN CN202210808019.3A patent/CN114994950A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407342A (en) * | 2018-12-12 | 2019-03-01 | 南开大学 | A kind of multizone contact lenses and application method with control mypia progression performance |
| CN213814173U (en) * | 2020-09-22 | 2021-07-27 | 江苏明世光学科技有限公司 | Peripheral myopic out-of-focus lens for enhancing close-distance reading compliance |
| CN213182237U (en) * | 2020-10-13 | 2021-05-11 | 江苏明世光学科技有限公司 | Personalized peripheral myopic out-of-focus spectacle lens |
| CN215678948U (en) * | 2021-08-29 | 2022-01-28 | 苏州明世光学科技有限公司 | Out-of-focus spectacle lens suitable for teenager myopia control |
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20220902 |