CN222319232U - Myopia prevention and control lens for reducing retina imaging contrast - Google Patents
Myopia prevention and control lens for reducing retina imaging contrast Download PDFInfo
- Publication number
- CN222319232U CN222319232U CN202420771954.1U CN202420771954U CN222319232U CN 222319232 U CN222319232 U CN 222319232U CN 202420771954 U CN202420771954 U CN 202420771954U CN 222319232 U CN222319232 U CN 222319232U
- Authority
- CN
- China
- Prior art keywords
- area
- myopia prevention
- diffusion
- light diffusion
- imaging contrast
- 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.)
- Active
Links
- 230000004379 myopia Effects 0.000 title claims abstract description 31
- 208000001491 myopia Diseases 0.000 title claims abstract description 31
- 230000002265 prevention Effects 0.000 title claims abstract description 26
- 238000003384 imaging method Methods 0.000 title claims abstract description 20
- 210000001525 retina Anatomy 0.000 title description 12
- 238000009792 diffusion process Methods 0.000 claims abstract description 60
- 230000004438 eyesight Effects 0.000 claims abstract description 29
- 230000002207 retinal effect Effects 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 abstract description 16
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 description 17
- 230000009467 reduction Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000004304 visual acuity Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004515 progressive myopia Effects 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 208000014733 refractive error Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Eyeglasses (AREA)
Abstract
本实用新型涉及一种减少视网膜成像对比度的近视防控镜片，包括，包括镜片本体，所述镜片本体上具有朝向眼睛的第一曲面和背向眼睛的第二曲面；所述第一曲面上设有明视区以及环设于所述明视区的光扩散区和离焦区，所述光扩散区与所述离焦区重叠布置，且二者的面积相同；所述第一曲面还具有环设于所述光扩散区外围的刻度辅助区。其有益效果是，通过明视区有效矫正视力，通过光扩散区实现对比度降低，同时通过离焦区实现离焦效果，三者结合能够有效抑制视力加深，大大提高近视防控效果。
The utility model relates to a myopia prevention and control lens for reducing retinal imaging contrast, comprising a lens body, the lens body having a first curved surface facing the eye and a second curved surface facing away from the eye; the first curved surface is provided with a clear vision area and a light diffusion area and a defocus area arranged around the clear vision area, the light diffusion area and the defocus area are arranged overlapping, and the two have the same area; the first curved surface also has a scale auxiliary area arranged around the light diffusion area. Its beneficial effect is that the vision is effectively corrected through the clear vision area, the contrast is reduced through the light diffusion area, and the defocus effect is achieved through the defocus area. The combination of the three can effectively inhibit the deepening of vision and greatly improve the myopia prevention and control effect.
Description
Technical Field
The utility model relates to the technical field of lenses, in particular to a myopia prevention and control lens for reducing retinal imaging contrast.
Background
Myopia is a refractive state in which the focal point falls in front of the retina after parallel rays of light are refracted by the refractive system of the eye, so that the myopic eye cannot see a distant object clearly. If the target is gradually moved toward the eyes, the emitted light spreads to a certain extent on the eyes, the formed focus moves backward, and when the target moves to a certain point in front of the eyes, the closer the point is to the position of the eyes, the deeper the myopia degree is. At present, no theoretical system can explain all doubts about myopia causes and control mechanisms, and certain limitations exist. The electronic equipment with display screens such as mobile phones and computers is used for a longer time in daily life, fine and bright pictures bring good visual experience, but the electronic equipment also has strong contrast, so that eye axis growth can be stimulated, vision is affected, a new thought is provided for myopia prevention and control by reducing the contrast, and the feasibility is high through clinical effective demonstration.
At present, a commonly used myopia prevention and control lens is a defocus lens, which uses a myopia defocus principle to correct central refractive errors and peripheral relative positive luminosity to correct peripheral retinal hyperopic defocus of a myopic eye, so as to inhibit eye axis growth and myopia progression induced by the peripheral retinal hyperopic defocus, thereby playing a role in delaying vision deepening. However, the conventional defocused lens cannot change the contrast of imaging on retina, and the myopia prevention and control effect is not ideal for the daily use environment of people.
Therefore, a myopia prevention and control lens capable of reducing the contrast of retinal imaging and simultaneously achieving defocus effect is needed.
Disclosure of utility model
First, the technical problem to be solved
In view of the above-mentioned shortcomings and disadvantages of the prior art, the present utility model provides a myopia prevention and control lens for reducing the contrast of retinal imaging, which solves the technical problems that the contrast cannot be reduced and the myopia prevention and control effect is not ideal in the prior art.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:
The lens comprises a lens body, wherein a first curved surface facing eyes and a second curved surface facing away from the eyes are arranged on the lens body, a bright visual area, a light diffusion area and a defocusing area are arranged on the first curved surface in a surrounding mode, the light diffusion area and the defocusing area are arranged in an overlapping mode, the areas of the light diffusion area and the defocusing area are the same, and the first curved surface is further provided with a scale auxiliary area which is arranged on the periphery of the light diffusion area in a surrounding mode.
The light diffusion area comprises a plurality of diffusion points, wherein the diffusion points surround the bright visual area to form a diffusion zone, and the diffusion zones are distributed in a diffusion way from inside to outside by taking the bright visual area as the center.
Optionally, the diameter of the diffusion point is α, the value range of α is 0.1-0.5 mm, and the distance between two diffusion points is d=Δ2+α, and Δ=0.4-0.8 mm.
Optionally, the defocus region is formed by a plurality of free-form surface regions, and the radii of curvature of the plurality of free-form surface regions gradually increase from inside to outside with the photopic region as a center, thereby gradually increasing defocus amount.
Optionally, the light diffusion region and the defocus region are regular polygons or circles in shape.
Optionally, the bright visual area is circular in shape.
Optionally, the scale auxiliary area comprises a plurality of datum lines uniformly arranged around the light diffusion area, and the datum lines are positioned on a straight line where the diameter of the bright vision area is positioned.
Optionally, the diameter of the bright vision area is 3-6 mm.
(III) beneficial effects
The beneficial effects of the utility model are as follows:
The myopia prevention and control lens for reducing the retinal imaging contrast provided by the utility model can refract light on the retina through the bright vision area on the lens, effectively correct vision and ensure normal vision, reduce the contrast and brightness of an image before the vision on the retina through the light diffusion area, reduce hue difference, focus to the front of the retina through the defocusing area, form myopia defocusing, effectively inhibit eye axis stretching through imaging advance, and ensure that the optical center corresponds to the defocusing geometric center through the scale auxiliary area so as to ensure the accuracy of subsequent test and matching. Compared with the prior art, the visual acuity correction device has the advantages that vision is effectively corrected through the bright visual area, contrast reduction is realized through the light diffusion area, and simultaneously, the defocusing effect is realized through the defocusing area, so that the combination of the bright visual area and the defocusing area can effectively inhibit vision deepening, and the myopia prevention and control effect is greatly improved.
Drawings
FIG. 1 is a schematic diagram showing the overall structure of a myopia prevention and control lens for reducing retinal imaging contrast according to embodiment 1 of the present utility model;
Fig. 2 is an enlarged view at a in fig. 1.
[ Reference numerals description ]
1, A lens body;
2, a bright visual area;
3, light diffusion area, 31, diffusion point;
4, a scale auxiliary area and 41, a datum line.
Detailed Description
In order that the above-described aspects may be better understood, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
Example 1:
as shown in fig. 1-2, the embodiment of the utility model provides a myopia prevention and control lens for reducing retinal imaging contrast, which comprises a lens body 1, wherein the lens body 1 is provided with a first curved surface facing towards eyes and a second curved surface facing away from eyes. The first curved surface is provided with a bright visual area 2, and a light diffusion area 3 and a defocusing area which are annularly arranged on the bright visual area 2, wherein the light diffusion area 3 and the defocusing area are overlapped and are identical in area. The first curved surface is also provided with a scale auxiliary area 4 which is annularly arranged on the periphery of the light diffusion area 3. In this embodiment, the photopic region 2 is circular in shape and has a diameter of 5mm.
Specifically, light is refracted on the retina through the photopic area 2 on the lens, vision is effectively corrected, normal vision is ensured, contrast and brightness of an image before the vision on the retina can be reduced through the light diffusion area 3, hue difference is reduced, myopia defocus is formed by focusing to the front of the retina through the defocus area, eye axis stretching is effectively inhibited through imaging advance, the optical center can be ensured to correspond to the defocus geometric center through the scale auxiliary area 4, and the accuracy of follow-up test and allocation is ensured. Compared with the prior art, the visual acuity can be effectively corrected through the bright visual zone 2, the contrast is reduced through the light diffusion zone 3, the defocus effect is realized through the defocus zone, the visual acuity can be effectively restrained from deepening through the combination of the bright visual zone 2 and the defocus effect, and the myopia prevention and control effect is greatly improved.
Further, as shown in fig. 1-2, the defocus region is formed by combining a plurality of free-form surface regions, and the curvature radius of the plurality of free-form surface regions gradually increases from inside to outside with the photopic region (2) as a center, so that the defocus amount is gradually increased, the retinal structure of the eye is more matched, and the defocus effect is ensured and meanwhile, the wearing comfort is good. The light diffusion area 3 comprises a plurality of diffusion points 31, the diffusion points 31 form a circular diffusion zone around the bright visual area 2, and the diffusion zones are distributed from inside to outside by taking the bright visual area 2 as the center, so that the contrast ratio of the refracted light rays at each position on the lens body 1 can be effectively ensured to be consistent. The defocusing area and the diffusion zones are alternately distributed from inside to outside by taking the bright visual area 2 as the center. A part of light rays in front of the sight line enter the photopic region 2, are refracted by the photopic region 2 and are focused on the retina, and the other part of light rays are reduced in contrast through the light diffusion region 3 and are matched with the defocus region to be focused in front of the retina, so that the deepening of the eyesight can be effectively restrained.
Further, as shown in fig. 1-2, in the present embodiment, the plurality of diffusing points 31 uniformly form a circular diffusing band around the bright visual area 2. The light diffusion region 3 may have a regular polygon shape, and a plurality of regular polygon diffusion zones may be formed by diffusing the light diffusion region 3 from inside to outside around the bright visual zone 2.
Further, in this embodiment, according to the contrast reduction effects of the diameters of the diffusion points 31 and the point pitches, three steps are divided, namely, slight reduction, moderate reduction and high reduction are respectively performed, the precise diffusion points 31 and the point pitch sizes of the light diffusion regions 3 and the relationship between the two can be adapted to the retinal contrast reduction requirements of different situations while the contrast reduction effects are ensured, and the high-precision light diffusion regions 3 can accurately realize the contrast reduction of different levels, so that the smoothness of the lens surface is higher, the projection effect of the lens on light is better, and the appearance is more attractive.
Generally, the diopter is less than-3.00D, the value range of the diameter alpha of the diffusion point 31 is 0.1-0.3 mm, and the distance d=Delta 2 +alpha and Delta0.4-0.8 mm between two adjacent diffusion points 31 is recommended to be slightly reduced.
The diopter is reduced in a medium range from-3.00D to-6.00D, wherein the value range of the diameter alpha of each diffusion point 31 is 0.2-0.4 mm, and the distance d=Delta 2 +alpha and Delta0.4-0.8 mm between two adjacent diffusion points 31.
The diopter is larger than-6.00D, the selected height is reduced, the value range of the diameter alpha of the diffusion points 31 is 0.3-0.5 mm, and the distance d=delta 2 +alpha and delta=0.4-0.8 mm between two adjacent diffusion points 31.
This can more effectively enhance the effect of the light diffusion region 3, but the glasses for each person are different in specific cases, and a doctor or optometrist selects an appropriate gear according to the diopter and the length of the eye axis.
Further, as shown in the drawing, the scale auxiliary area 4 includes a plurality of reference lines 41 uniformly arranged around the light diffusion area 3, the reference lines 41 being located on a straight line where the diameter of the bright vision area 2 is located. In the process of customizing the lens, the intersection point of the straight lines where the two datum lines 41 are located is the geometric center point, the intersection point is used as the base point for corresponding to the optical center for processing, and the optical center can be guaranteed to correspond to the defocused geometric center position, so that the follow-up accurate test and the pupil correspondence are guaranteed, the vision correction and prevention and control effects of the lens are guaranteed, and the wearing comfort and compliance are improved.
Example 2:
this embodiment provides a pair of spectacles comprising the myopia prevention and control lens described in embodiment 1.
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420771954.1U CN222319232U (en) | 2024-04-15 | 2024-04-15 | Myopia prevention and control lens for reducing retina imaging contrast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420771954.1U CN222319232U (en) | 2024-04-15 | 2024-04-15 | Myopia prevention and control lens for reducing retina imaging contrast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222319232U true CN222319232U (en) | 2025-01-07 |
Family
ID=94093792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420771954.1U Active CN222319232U (en) | 2024-04-15 | 2024-04-15 | Myopia prevention and control lens for reducing retina imaging contrast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222319232U (en) |
-
2024
- 2024-04-15 CN CN202420771954.1U patent/CN222319232U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100407733B1 (en) | Multi-focus lens with intermediate optical power | |
| US4618227A (en) | Soft contact lens | |
| JP4652576B2 (en) | Multifocal ophthalmic lens to reduce the dimensions of rainbow rings | |
| US6474814B1 (en) | Multifocal ophthalmic lens with induced aperture | |
| JP4467653B2 (en) | Concentric aspherical multifocal ophthalmic lens and manufacturing method thereof | |
| WO1995026518A1 (en) | Ophthalmic lens having a progressive multifocal zone and method of manufacturing same | |
| CN106461971B (en) | Multifocal ophthalmic lenses worn in or on the eyes | |
| JP2008250356A (en) | Combined multifocal toric lens | |
| US6116735A (en) | Contact lens | |
| CA2253419A1 (en) | Multifocal contact lens | |
| TWI595286B (en) | Continuous zoom contact lenses | |
| US20100271596A1 (en) | Multifocal contact lens | |
| TW202109141A (en) | Photochromic soft contact lens with cosmetic and efficacy considerations | |
| CN107765448B (en) | Continuous zoom contact lenses | |
| JP3171629B2 (en) | Multifocal ophthalmic lens and manufacturing method thereof | |
| US20220179240A1 (en) | Contact lens | |
| CN222319232U (en) | Myopia prevention and control lens for reducing retina imaging contrast | |
| CN211375220U (en) | Sclera lens | |
| CN218995813U (en) | Compound defocused double-light lens and glasses | |
| CN222232816U (en) | A composite myopia prevention and control lens | |
| WO2023168773A1 (en) | Spectacle lens | |
| US11209670B2 (en) | Method for designing edge to edge photochromic soft contact lenses | |
| CN223006356U (en) | Defocused lenses and glasses | |
| CN221595454U (en) | Point-diffusion defocusing double-effect vision delay lens and glasses | |
| CN222014572U (en) | Reading-writing far vision system with defocusing effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |