CN219936228U - Prism lens combined lens for delaying myopia degree increase - Google Patents
Prism lens combined lens for delaying myopia degree increase Download PDFInfo
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- CN219936228U CN219936228U CN202223576129.6U CN202223576129U CN219936228U CN 219936228 U CN219936228 U CN 219936228U CN 202223576129 U CN202223576129 U CN 202223576129U CN 219936228 U CN219936228 U CN 219936228U
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- lens
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- near vision
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- 208000001491 myopia Diseases 0.000 title claims abstract description 50
- 230000004379 myopia Effects 0.000 title abstract description 20
- 230000004438 eyesight Effects 0.000 claims abstract description 19
- 230000000979 retarding effect Effects 0.000 claims description 4
- 230000004515 progressive myopia Effects 0.000 claims 1
- 210000001508 eye Anatomy 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 7
- 210000001525 retina Anatomy 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 abstract description 3
- 210000000695 crystalline len Anatomy 0.000 description 40
- 230000000694 effects Effects 0.000 description 7
- 210000005252 bulbus oculi Anatomy 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000008572 axis elongation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004410 intraocular pressure Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004423 myopia development Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Eyeglasses (AREA)
Abstract
The utility model discloses a prism lens combination lens for delaying the increase of myopia degrees, which belongs to the technical field of functional spectacle lenses and comprises a lens integrally formed, wherein the lens comprises a far vision zone and a myopia zone, the far vision zone is positioned above the lens, the near vision zone is positioned below the lens, a linear boundary line is arranged between the far vision zone and the myopia zone, the far vision zone and the near vision zone are spherical arc sheets with different curvatures, and a triangular prism with an inward base is added on the spherical arc sheet of the near vision zone. The utility model adopts scientific ADD design to enable a user to obtain clear imaging on retina when looking far and near. The near constant ADD+ 1.75.00D design, the near writing and reading adjustment is relaxed, and the addition of the prism with the inward base of 4 delta-6 delta reduces near vision set use, so that eyes of a user are relaxed during long-time reading and writing.
Description
Technical Field
The utility model relates to the technical field of functional spectacle lenses, in particular to a prism lens combination lens for delaying the increment of myopia degrees.
Background
The incidence rate of myopia of the teenagers and the children is continuously increased, and the attention of the whole society is brought. The long-time short-distance eye use is a main cause for myopia occurrence and development. The far eye looks away, the far object is similar to parallel rays, just falls on the retina for imaging, and the internal and external muscles of the eye are all in a relaxed state. When looking near, the near object is focused behind the retina, corresponding to the divergent light rays entering the emmetropic refractive system, relative to the eyeball. After myopia, the spectacles with the concave lenses are used for reading clearly through adjustment, and actually, the spectacles with the concave lenses are used for reading clearly through adjustment, because the original elongated eye axes are counteracted by the spectacles for reading clearly, the elongation needs to be adjusted again when the spectacles are used for reading closely, and then the degree is increased, and the spectacles are trapped in the vicious circle of myopia. Thus, associated with myopia: parallel light rays, divergent light rays, refractive power, eye axis elongation, adjustment, aggregation and prism effect form the key words of lens research. Myopia prevention and control lenses have also become a focus of research. The prior myopia prevention and control lenses mainly comprise the following components: prism type combined lenses, common double-lens, one-line double-lens and annular focus, defocus and progressive lens, but the prism type combined lenses have the problem of inconvenient use. The common double-lens and the linear double-lens are formed by sticking a prism lens on a common concave lens, and the prism effect generated by the prism is perpendicular to the lens, so that the lens cannot achieve the control purpose and secondary damage to eyes of children is possible. The annular focus, the defocusing and the progressive lens are all spherical lenses, the appearance is changed, the structure and the design principle of the spherical lenses are not changed, a vertical prism is generated when the spherical lenses are separated from the optical center, and eyes are used for a long time and close distance, visual fatigue and intraocular pressure rise are caused.
Disclosure of Invention
The utility model aims to provide a prism-lens combined lens for delaying the increase of myopia degree, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a prism lens combination lens that delay myopia number of degrees increases, includes the lens of an organic whole constitution, the lens includes far vision district and myopia district, the far vision district is located the top of lens, the near vision district is located the below of lens, be equipped with sharp boundary line between far vision district and the myopia district, far vision district and the near vision district is the sphere arc piece of different curvatures, the sphere arc piece in near vision district is added with the base inward prism.
Wherein, the spherical arc piece in the near vision zone is a convex lens.
Wherein the ADD value of the spherical arc piece in the near vision zone is +1.75D.
Wherein the prism degree of the triple prism is 4 delta-6 delta.
Advantageous effects
The utility model provides a prism lens combination lens for delaying the increment of myopia degrees, which has the following beneficial effects:
the utility model is used for correcting the far vision, and the far image is clear, wide and stable. The lower half adopts ADD+ 1.75.00D, so that the horizontal prism with constant 4 delta-6 delta designed by adjustment is relaxed, the set is lightened, the set point is scientifically designed, and the horizontal direction of the light rays in near vision is ensured to enter the eyeball.
The utility model adopts scientific ADD design to enable a user to obtain clear imaging on retina when looking far and near. The near constant ADD+ 1.75.00D design, the near writing and reading adjustment is relaxed, and the addition of the prism with the inward base of 4 delta-6 delta reduces near vision set use, so that eyes of a user are relaxed during long-time reading and writing.
Drawings
Fig. 1 is a schematic view of a prism-lens assembly for retarding the increase of the near vision power according to the present utility model.
Fig. 2 is a schematic cross-sectional view of a prism-lens assembly for retarding the increase of the near vision power according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, the present utility model provides a prism lens combination lens for retarding the increase of the near vision power, which comprises a lens 1 integrally formed, wherein the lens 1 comprises a far vision zone 2 and a near vision zone 3, the far vision zone 2 is located above the lens 1, the near vision zone 3 is located below the lens 1, a linear boundary line 4 is arranged between the far vision zone 2 and the near vision zone 3, the far vision zone 2 and the near vision zone 3 are spherical arcs with different curvatures, the far vision zone spherical arc 5 is a concave lens, the near vision zone spherical arc 6 is a convex lens, and a base inward prism 7 is attached to the near vision zone spherical arc 6. The present embodiment does not interfere with the use of the distance optical center nor the near prism set point, and also eliminates the prism effect of the near zone affected by the distance zone refraction. The embodiment can correct far vision, can prevent the prism set point from generating a vertical prism effect, corrects bad habit of low head when a wearer reads, reduces adjusting force when reading and writing for a long time and a close distance, reduces integration force, enables internal and external muscles of an eyeball to be in a completely relaxed state, does not need to change curvature of a crystalline lens, and delays elongation of an eye axis, thereby achieving the purpose of delaying and controlling deepening development of myopia.
Wherein the ADD value of the near vision zone ball arc sheet 6 is +1.75D. The constant ADD+ 1.75.00D design is adopted, and the ADD fixed value and the prism bottom direction are realized by changing the radian of the front surface of the near-use region and the thickness difference of two end points.
Wherein the prism degree of the triangular prism is 5 delta. The constant prismatic degree design can ensure that normal myopia is not damaged by secondary injury after long-term wearing, and has correction effect on mild external oblique myopia patients. The near vision zone 3 achieves the effect of intervening on near vision of the myopic eye, and replaces and relaxes accommodation.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The prism-lens combined lens for delaying the increase of the myopic degree is characterized by comprising a lens which is integrally formed, wherein the lens comprises a far vision zone and a near vision zone, the far vision zone is positioned above the lens, the near vision zone is positioned below the lens, a linear boundary line is arranged between the far vision zone and the near vision zone, the far vision zone and the near vision zone are spherical arc sheets with different curvatures, and a triangular prism with an inward base is added on the spherical arc sheet of the near vision zone;
the ADD value of the spherical arc piece in the near vision zone is +1.75D;
the prism has an edge degree of 4 delta-6 delta.
2. A prismatic lens assembly for retarding the progression of myopia in accordance with claim 1, wherein: the spherical arc piece in the near vision zone is a convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223576129.6U CN219936228U (en) | 2022-12-31 | 2022-12-31 | Prism lens combined lens for delaying myopia degree increase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223576129.6U CN219936228U (en) | 2022-12-31 | 2022-12-31 | Prism lens combined lens for delaying myopia degree increase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219936228U true CN219936228U (en) | 2023-10-31 |
Family
ID=88493590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223576129.6U Active CN219936228U (en) | 2022-12-31 | 2022-12-31 | Prism lens combined lens for delaying myopia degree increase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219936228U (en) |
-
2022
- 2022-12-31 CN CN202223576129.6U patent/CN219936228U/en active Active
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