CN112578578A - Out-of-focus face type myopia prevention and control lens - Google Patents
Out-of-focus face type myopia prevention and control lens Download PDFInfo
- Publication number
- CN112578578A CN112578578A CN202011384249.9A CN202011384249A CN112578578A CN 112578578 A CN112578578 A CN 112578578A CN 202011384249 A CN202011384249 A CN 202011384249A CN 112578578 A CN112578578 A CN 112578578A
- Authority
- CN
- China
- Prior art keywords
- focus
- area
- defocusing
- meridian
- lens
- Prior art date
- 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.)
- Granted
Links
- 208000001491 myopia Diseases 0.000 title claims abstract description 29
- 230000004379 myopia Effects 0.000 title claims abstract description 28
- 230000002265 prevention Effects 0.000 title claims abstract description 21
- 230000004438 eyesight Effects 0.000 claims abstract description 41
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 230000002123 temporal effect Effects 0.000 claims description 3
- 210000001525 retina Anatomy 0.000 abstract description 10
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 210000001508 eye Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005043 peripheral vision Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000002929 anti-fatigue Effects 0.000 description 2
- 230000004402 high myopia Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 206010047513 Vision blurred Diseases 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 210000003986 cell retinal photoreceptor Anatomy 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000004423 myopia development Effects 0.000 description 1
- 210000001328 optic nerve Anatomy 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
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
-
- 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
-
- 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
Abstract
The invention discloses a defocused surface type myopia prevention and control lens which comprises a lens body with a refractive surface, wherein the lens body is provided with a horizontal meridian and a vertical meridian. The optical area of the lens body is divided into a central vision area and a peripheral defocusing vision area, the central vision area is an asymmetric optical fixed focus area, and the peripheral defocusing vision area is divided into an upper defocusing area and a lower defocusing area by a horizontal meridian. The upper defocusing area is symmetrically distributed about a vertical meridian, the lower defocusing area is an asymmetric optical defocusing area, and defocusing amount changes on the left side and the right side are different. The horizontal and vertical meridians have different variations in their photometric distributions. The lens body is provided with the central vision area and the peripheral defocusing vision area, a clear vision field can be formed in the fovea of the retina through the change of the luminosity distribution, the myopic defocusing is formed around the retina, and the myopia progress can be delayed and controlled.
Description
Technical Field
The application belongs to the technical field of lenses, and particularly relates to an out-of-focus face type myopia prevention and control lens.
Background
With the development of science and the progress of society, the near distance eye use load is continuously increased, and the myopia incidence rate of teenagers and children is higher and higher. During the past 60 years, the prevalence of myopia in young Chinese people has progressed from 10% -20% to 90%, with about 19.5% being high myopia. High myopia causes irreversible damage to retinal photoreceptors, resulting in loss of central vision, leading to blindness. Therefore, correct vision correction becomes a problem that is not negligible in the current society.
Myopia is a blurred vision caused by the eye focusing an image of a distant object in front of the retina due to too long axial length of the eyeball or too much curvature of the cornea. The traditional method of correcting myopia is by wearing spherical lenses, i.e. monofocal lenses. Although the spherical lens can present an image in the fovea, the image around the retina falls behind the retina, causing hyperopic defocus and further forcing the elongation of the axis of the eye to deepen the development of myopia.
At present, two myopia prevention and control lenses, namely an anti-fatigue lens and a progressive multi-focus lens, appear in the market. The anti-fatigue lens is a lens with a specified power at the position of one half of the optical center focal point and 3mm upwards, the power of the lens is reduced by about 50 to 75 degrees from one half downwards, the peripheral hyperopic defocusing cannot be generated due to the increase of the power of the lens at the two sides downwards of the optical center, and the prism effect generated due to the edge thickness cannot be counteracted. The progressive multi-focus lens is in an asymmetric design concept, a channel is vertically arranged at the center of the lens, the other end of the channel is a vision field area with constant power, a folding design principle is adopted, astigmatism areas are arranged on two sides of the channel, the vision field is narrow, optic nerve fatigue is easy to generate, and a vision blind area exists and is difficult to adapt.
At present, many lenses related to myopia prevention and control exist at home and abroad, and some of the lenses are widely applied to life, but the existing methods all have certain defects. Therefore, the first problem to be solved in the design process is to develop a lens design method which can make the image fall on the fovea and form myopic defocus in the peripheral vision of the retina so as to prevent and slow myopia.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present application is to provide an out-of-focus plane type myopia prevention and control lens, which is used for preventing and delaying myopia by placing an image in the fovea and forming a myopic out-of-focus in the peripheral vision of the retina.
In order to solve the technical problem, the invention discloses a defocused surface type myopia prevention and control lens, which comprises a lens body with a refractive index surface, wherein the lens body is provided with an optical center in the center;
the horizontal meridian and the vertical meridian are arranged on the lens body and intersect at the optical center, and the horizontal meridian and the vertical meridian are different in luminosity distribution;
the lens body is provided with a central vision area and a peripheral defocusing vision area, the central vision area is an asymmetric optical fixed focus area, and the peripheral defocusing vision area comprises an upper defocusing area and a lower defocusing area which are divided by a horizontal meridian; the upper defocus area is symmetrically distributed about the vertical meridian and the lower defocus area is asymmetrically distributed about the vertical meridian.
According to an embodiment of the present invention, the defocus variation of the upper out-of-focus area is smaller than the defocus variation of the lower out-of-focus area; the defocusing variable quantities of the left side and the right side of the lower defocusing area are different.
According to an embodiment of the present invention, the luminosity of the horizontal meridian is
(ii) a Luminosity of the vertical meridian of
And the luminosity gradually increases from the central vision area to the peripheral out-of-focus vision area.
According to an embodiment of the present invention, the central vision area is 8 to 22mm, and the peripheral defocus vision area is 18 to 32 mm.
According to an embodiment of the present invention, the upper defocus area is divided into left and right sides by a vertical meridian, and the left and right sides are symmetrical, and the light intensity gradually increases from inside to outside.
According to an embodiment of the present invention, the lower defocus area is divided into left and right sides by a vertical meridian, and the left and right sides are asymmetric, and the luminance variation of the left and right sides is different, wherein the luminance variation trend is inward near the temporal side and outward near the nasal side.
Compared with the prior art, the application can obtain the following technical effects:
through the central vision area and the peripheral out-of-focus vision area arranged on the lens body, the image is dropped on the fovea and near vision out-of-focus is formed at the periphery of the retina, so that the method for designing the lens for preventing and delaying myopia is used, a new idea and a new way are provided for the method for designing the near prevention and control lens, the implementation is strong, and the method has very practical application prospect.
Of course, it is not necessary for any one product to achieve all of the above-described technical effects simultaneously.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of an out-of-focus surface type myopia prevention and control lens according to an embodiment of the present application;
fig. 2 is a schematic diagram of a principle of an out-of-focus surface type myopia prevention and control lens according to an embodiment of the application.
Reference numerals
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
Referring to fig. 1 and 2 together, fig. 1 is a schematic diagram of an out-of-focus surface type myopia prevention and control lens according to an embodiment of the present application; fig. 2 is a schematic diagram of a principle of an out-of-focus surface type myopia prevention and control lens according to an embodiment of the application. As shown in the figure, a myopic prevention and control lens of an out-of-focus surface type comprises a lens body 10 with a refractive surface, wherein the lens body 10 has an optical center O in the center; the horizontal meridian 14 and the vertical meridian 13 are arranged on the lens body 10, the horizontal meridian 14 and the vertical meridian 13 intersect at the optical center O, and the horizontal meridian 14 and the vertical meridian 13 have different luminosity distributions.
The lens body 10 is provided with a central vision area 12 and a peripheral defocusing vision area 11, the central vision area 12 is an asymmetric optical fixed focus area, and the peripheral defocusing vision area 11 comprises an upper defocusing area and a lower defocusing area which are divided by a horizontal meridian 14; the upper defocus area is symmetrically distributed about the vertical meridian 13, and the lower defocus area is asymmetrically distributed about the vertical meridian 13. The invention realizes the clear visual field formed in the fovea of the retina through the change of the luminosity distribution of the central vision area 12 and the peripheral defocusing vision area 11, and simultaneously forms the myopic defocusing around the retina, thereby being capable of delaying and controlling the myopic progress.
In one embodiment of the present invention, the central vision zone is provided with r1, r2, r3 and r4, which are the radial distances from the optical center O to the peripheral vision out-of-focus zone, respectively, controlling the radial extent of each direction. Wherein, the area above r1 is an upper out-of-focus area which is symmetrically distributed about the vertical meridian 13, and the out-of-focus variation of the upper out-of-focus area is smaller than that of the lower out-of-focus area; the region below r3 is a lower out-of-focus region, the lower out-of-focus region is an asymmetric region, the defocusing amount changes on the left side and the right side are different, and the luminosity change of the lower out-of-focus region can be changed by changing the changes of r2, r3 and r 4.
Further, the defocus variation of the upper out-of-focus area of the present invention is smaller than the defocus variation of the lower out-of-focus area; the defocusing variable quantities of the left side and the right side of the lower defocusing area are different.
In a preferred embodiment of the invention, the size of the central vision zone 12 is 8-22 mm, namely the width range thereof, and the size of the peripheral defocused vision zone 11 is 18-32 mm, so that the use of the visual area of the eye is ensured, and meanwhile, the defocused change effectively avoids visual blurring and delays and controls the myopic deepening.
In the present invention, the upper defocus area is divided into left and right sides by a vertical meridian 13, and the left and right sides are symmetrical, and the illuminance gradually increases from the inside to the outside.
The lower defocus area is divided into left and right sides by a vertical meridian 13, the left and right sides are asymmetric, and the luminance changes of the left and right sides are different, wherein the luminance change trend near the temporal side is inward, and the luminance change trend near the nasal side is outward.
Since the horizontal meridian 14 and the vertical meridian 13 in the lens body 10 employ different functions to vary the power: the luminosity of the horizontal meridian 14 is
(ii) a The luminosity of the vertical meridian 13 is
And the central vision zone 12 to the peripheral out-of-focus vision zone 11 gradually increase in luminance.
The blended weight function w (r) is therefore used here to design the rise distribution of the inner surface of the lens body 10:
wherein
， 
Where R1 and R2 are defined radii, θ is an angle at a different position, c is a curvature (i.e., reciprocal of radius) at a vertex of the non-curved surface, k is a conic coefficient of the conic surface, and R is0For the radius of curvature of the O point, Ri the radius of curvature towards the edge, a and b the coefficients of the x and y axes in the function F1, F2, a =1, b is chosen>1, obtaining a non-rotational symmetric curved surface with steep vertical direction; k is a radical of1And k2Are the weighting function coefficients.
In conclusion, the lens design method for preventing and delaying myopia provides a new idea and a new way for the design method of the myopia prevention and control lens, is strong in implementation and has very practical application prospects.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application 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 application as described 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 application, which is to be protected by the claims appended hereto.
Claims (6)
1. An out-of-focus face type myopia prevention and control lens is characterized by comprising:
a lens body having a refractive index surface, the lens body having a centrally located optical center;
the horizontal meridian and the vertical meridian are arranged on the lens body, intersect at the optical center, and have different photometric distributions;
wherein the lens body has a central vision zone that is an asymmetric optical in-focus zone and a peripheral out-of-focus vision zone that includes an upper out-of-focus zone and a lower out-of-focus zone divided by the horizontal meridian; the upper defocus region is symmetrically distributed about the vertical meridian and the lower defocus region is asymmetrically distributed about the vertical meridian.
2. The through-focus surface type myopia prevention and control lens of claim 1, wherein the amount of through-focus variation in the upper out-of-focus region is smaller than the amount of through-focus variation in the lower out-of-focus region; the defocusing variable quantities of the left side and the right side of the lower defocusing area are different.
3. The out-of-focus surface type myopia prevention and control lens of claim 1, wherein the horizontal meridian has a luminosity of
(ii) a The luminosity of the vertical meridian is
And the luminosity of the central vision area to the peripheral out-of-focus vision area is gradually increased.
4. The out-of-focus surface type myopia prevention and control lens according to claim 1, wherein the size of the central vision area is 8-22 mm, and the size of the peripheral out-of-focus vision area is 18-32 mm.
5. The out-of-focus myopia prevention and control lens of claim 1, wherein the upper out-of-focus region is divided into left and right sides by the vertical meridian, and the left and right sides are symmetrical, and the luminosity increases gradually from inside to outside.
6. The out-of-focus myopia prevention and control lens of claim 1, wherein the lower out-of-focus region is divided into left and right sides by the vertical meridian, and the left and right sides are asymmetric, and the photometric changes of the left and right sides are different, wherein the photometric change trend toward the temporal side is inward and the photometric change trend toward the nasal side is outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011384249.9A CN112578578B (en) | 2020-12-02 | 2020-12-02 | Defocus-surface type myopia prevention and control lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011384249.9A CN112578578B (en) | 2020-12-02 | 2020-12-02 | Defocus-surface type myopia prevention and control lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112578578A true CN112578578A (en) | 2021-03-30 |
| CN112578578B CN112578578B (en) | 2023-12-12 |
Family
ID=75126597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011384249.9A Active CN112578578B (en) | 2020-12-02 | 2020-12-02 | Defocus-surface type myopia prevention and control lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112578578B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114924426A (en) * | 2022-04-14 | 2022-08-19 | 北京同仁验光配镜有限责任公司 | Myopia prevention and control lens and myopia prevention and control glasses |
| CN117706790A (en) * | 2024-02-05 | 2024-03-15 | 奥琳光学科技(苏州)有限公司 | Virtual reality equipment and peripheral retina defocus adjustment method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201749260U (en) * | 2010-07-12 | 2011-02-16 | 段亚东 | Myopia progressive addition peripheral defocus correction spectacles |
| CN104020577A (en) * | 2013-01-30 | 2014-09-03 | 庄臣及庄臣视力保护公司 | Asymmetric lens design and method for preventing and/or slowing myopia progression |
| CN104090381A (en) * | 2014-07-21 | 2014-10-08 | 段亚东 | Nasal and bitamporal region peripheral out-of-focus frame glasses |
| CN110068938A (en) * | 2019-05-11 | 2019-07-30 | 段亚东 | A kind of nose temporo side periphery defocus spectacle lens adjusting set based on eye |
| CN110174778A (en) * | 2019-05-28 | 2019-08-27 | 甄毅 | The eyeglass, contact lens and eyeglass pad pasting of myopia development can be effectively relieved |
| CN210465890U (en) * | 2019-09-11 | 2020-05-05 | 江苏淘镜有限公司 | Spherical defocused resin lens |
| CN111279252A (en) * | 2017-09-19 | 2020-06-12 | 豪雅镜片泰国有限公司 | Spectacle lens and method for producing same |
-
2020
- 2020-12-02 CN CN202011384249.9A patent/CN112578578B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201749260U (en) * | 2010-07-12 | 2011-02-16 | 段亚东 | Myopia progressive addition peripheral defocus correction spectacles |
| CN104020577A (en) * | 2013-01-30 | 2014-09-03 | 庄臣及庄臣视力保护公司 | Asymmetric lens design and method for preventing and/or slowing myopia progression |
| CN104090381A (en) * | 2014-07-21 | 2014-10-08 | 段亚东 | Nasal and bitamporal region peripheral out-of-focus frame glasses |
| CN111279252A (en) * | 2017-09-19 | 2020-06-12 | 豪雅镜片泰国有限公司 | Spectacle lens and method for producing same |
| CN110068938A (en) * | 2019-05-11 | 2019-07-30 | 段亚东 | A kind of nose temporo side periphery defocus spectacle lens adjusting set based on eye |
| CN110174778A (en) * | 2019-05-28 | 2019-08-27 | 甄毅 | The eyeglass, contact lens and eyeglass pad pasting of myopia development can be effectively relieved |
| CN210465890U (en) * | 2019-09-11 | 2020-05-05 | 江苏淘镜有限公司 | Spherical defocused resin lens |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114924426A (en) * | 2022-04-14 | 2022-08-19 | 北京同仁验光配镜有限责任公司 | Myopia prevention and control lens and myopia prevention and control glasses |
| CN117706790A (en) * | 2024-02-05 | 2024-03-15 | 奥琳光学科技(苏州)有限公司 | Virtual reality equipment and peripheral retina defocus adjustment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112578578B (en) | 2023-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI559044B (en) | A method and system for retarding the progression of myopia | |
| CN106291977B (en) | Cornea shaping mirror | |
| TW202122875A (en) | Ophthalmic lenses for reducing, minimizing, and/or eliminating interference on in-focus images by out-of-focus light | |
| CN112578578B (en) | Defocus-surface type myopia prevention and control lens | |
| CN106707542B (en) | Externally worn eyesight correction glasses | |
| TWI640307B (en) | Dual defocus lens | |
| CN106353892B (en) | Intraocular lens | |
| TWM624890U (en) | Contact lens for myopia control | |
| US20240103297A1 (en) | Ophthalmic Lenses and Methods for Correcting, Slowing, Reducing, and/or Controlling the Progression of Myopia | |
| CN110618541A (en) | Double-sided composite progressive resin lens and manufacturing process thereof | |
| CN115903269A (en) | Spectacle lens and frame spectacles | |
| US20220179240A1 (en) | Contact lens | |
| CN208969366U (en) | Increase the eyeglass for defocusing image capturing range using circle of good definition | |
| KR20220126803A (en) | Spectacle Lenses with Auxiliary Optical Elements | |
| CN220367492U (en) | Functional glasses for delaying myopia development | |
| CN219349293U (en) | Forward annular gradual change defocused prism sheet and glasses | |
| CN219039509U (en) | Defocus myopia prevention and control lens | |
| CN218413111U (en) | Myopia lens and frame glasses | |
| CN209979951U (en) | Lens with ring focal plane for controlling myopia and relieving | |
| CN110208962A (en) | A kind of ring focal plane control myopia is releived eyeglass | |
| CN215867413U (en) | Ophthalmic lens worn outside the eye | |
| CN213482597U (en) | Bifocal composite peripheral out-of-focus myopia lens | |
| CN209962035U (en) | Full focal plane myopia control prevention and control lens | |
| TWI769805B (en) | Full focus depth of field myopia control contact lenses | |
| TWI719425B (en) | A blind-free three-leaf vision len |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |