CN116774463A - Myopia prevention and control optical lens and myopia inhibition treatment instrument - Google Patents
Myopia prevention and control optical lens and myopia inhibition treatment instrument Download PDFInfo
- Publication number
- CN116774463A CN116774463A CN202311033195.5A CN202311033195A CN116774463A CN 116774463 A CN116774463 A CN 116774463A CN 202311033195 A CN202311033195 A CN 202311033195A CN 116774463 A CN116774463 A CN 116774463A
- Authority
- CN
- China
- Prior art keywords
- defocus
- myopia
- zone
- microlenses
- microlens
- 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.)
- Pending
Links
- 208000001491 myopia Diseases 0.000 title claims abstract description 84
- 230000004379 myopia Effects 0.000 title claims abstract description 79
- 230000003287 optical effect Effects 0.000 title claims abstract description 67
- 230000002265 prevention Effects 0.000 title claims abstract description 32
- 230000005764 inhibitory process Effects 0.000 title claims description 6
- 230000002093 peripheral effect Effects 0.000 claims abstract description 40
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 abstract description 12
- 230000004438 eyesight Effects 0.000 abstract description 10
- 238000012937 correction Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 230000002829 reductive effect Effects 0.000 abstract description 3
- 210000001525 retina Anatomy 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000750 progressive effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005043 peripheral vision Effects 0.000 description 3
- 206010052143 Ocular discomfort Diseases 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000002569 neuron Anatomy 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 230000004515 progressive myopia Effects 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004423 myopia development Effects 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Eyeglasses (AREA)
- Prostheses (AREA)
Abstract
The invention belongs to the technical field of optical lenses, and discloses a myopia prevention and control optical lens, which comprises a central optical zone and a peripheral myopia defocus zone, wherein the diopter of the peripheral myopia defocus zone is larger than that of the central optical zone, a plurality of stages of defocus micro-lens rings surrounding the central optical zone are arranged on the peripheral myopia defocus zone, and a spacing zone is formed between every two adjacent stages of defocus micro-lens rings; the defocused microlens ring comprises a plurality of microlenses arranged in an annular array. The multi-stage defocusing microlens rings and the interval regions are alternately arranged, the defocusing difference between the central optical region and the peripheral myopia defocusing region is reduced, a vision correction buffer region is formed, a user is helped to quickly adapt to the change of optical power after wearing, and accordingly different visual demands from near to far can be respectively adapted, and wearing comfort of the user is improved.
Description
Technical Field
The invention relates to the technical field of lenses, in particular to a myopia prevention and control optical lens and a myopia inhibition treatment instrument.
Background
By defocus, it is meant an image that should be focused on the retina, not on the retina, but rather on the pre-retinal or post-retinal area. Focusing on the back of the retina is called hyperopic defocus and focusing on the front of the retina is called myopic defocus. Hyperopic defocus tends to induce compensatory increases in the axis of the eye, thereby leading to increased myopia. The defocus lens changes the hyperopic defocus which occurs in peripheral vision, namely, the peripheral vision focus which falls behind the retina, into myopia defocus, namely, the focus of peripheral vision falls in front of the retina, so that the increase of the eye axis is inhibited, and myopia deepening is effectively slowed down and/or controlled.
In the peripheral defocused glasses in the prior art, a defocusing ring is arranged in a defocusing area of a basic lens, but the problem of the structure is that under the condition that the focal power difference between a defocusing element and a central optical area is large, the wearing comfort of a user is influenced.
In view of this, there is a need for improvements in the prior art of defocus eyeglasses to solve the technical problem of low comfort when worn.
Disclosure of Invention
The invention aims to provide a myopia prevention and control optical lens and a myopia inhibition treatment instrument, which solve the technical problems.
To achieve the purpose, the invention adopts the following technical scheme:
a myopia prevention and control optical lens, the lens comprises a central optical zone and a peripheral myopia defocus zone, wherein the diopter of the peripheral myopia defocus zone is larger than that of the central optical zone, a plurality of levels of defocus micro-lens rings which are annularly arranged and encircle the central optical zone are arranged on the peripheral myopia defocus zone, and a spacing zone is formed between every two adjacent levels of defocus micro-lens rings; the defocused microlens ring comprises a plurality of microlenses arranged in an annular array.
Optionally, along the radial direction of the central optical area outwards, the diameters D of the microlenses are all linearly and incrementally arranged according to a first difference value, and the first difference value is greater than 0; wherein, the defocus amounts of the microlenses of the defocus microlens ring of a plurality of stages are equal.
Optionally, along the outward radial direction of the central optical zone, the defocus amount of the peripheral myopic defocus region is linearly increased between 1d and 1.5d to form a primary myopic defocus region; and a plurality of stages of the defocused microlens rings are annularly arranged to form a secondary myopia defocusing area.
Optionally, the width of any of the spacers is a constant k in a radial direction outward of the central optical zone.
Optionally, the width of the spacer region is linearly increased by a second difference along the radial direction of the central optical region.
Optionally, the lens has opposing anterior and posterior surfaces;
the primary myopia defocus region and the secondary myopia defocus region are arranged on the front surface at the same time;
or, the primary near-sighted defocus region is disposed on the rear surface, and the secondary near-sighted defocus region is disposed on the front surface.
Optionally, the peripheral myopia defocus region is further provided with an enhanced defocus microlens ring, the enhanced defocus microlens ring comprises a plurality of enhanced defocus microlenses arranged in an annular array, and the defocus amounts of the enhanced defocus microlenses are equal and larger than the defocus amounts of the microlenses;
wherein the enhanced defocus microlens ring is any two-stage defocus microlens ring between a third stage and a sixth stage from inside to outside of the peripheral myopia defocus region.
Optionally, the distance between any two adjacent microlenses on any one of the defocused microlens rings is equal.
Optionally, the number of said microlenses in said peripheral myopic defocus region has a maximum when two adjacent said microlenses are connected and intersect at a point;
the number of the microlenses in the peripheral myopic defocus region ranges from 80% to 100% of the maximum.
The invention also provides a myopia inhibition treatment instrument, which comprises the myopia prevention and control optical lens.
Compared with the prior art, the invention has the following beneficial effects: the central position of the lens is a central optical zone for conventional vision correction, i.e. to cause the far-distance incident light to form a clear focus on the retina; peripheral myopia defocus areas and defocus micro-lens rings of the periphery are alternately arranged, defocus difference between the central optical area and the peripheral myopia defocus areas is reduced, a vision correction buffer area is formed, a user is helped to quickly adapt to the change of optical power after wearing, and accordingly different visual demands from near to far can be respectively adapted, and wearing comfort of the user is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the invention, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the invention, without affecting the effect or achievement of the objective.
FIG. 1 is a schematic layout diagram of a myopia prevention and control optical lens in a first embodiment;
FIG. 2 is a second schematic layout of a myopia prevention and control optical lens in the first embodiment;
FIG. 3 is a schematic view showing a partial enlarged layout of the myopia prevention and control optical lens in FIG. 2 according to the first embodiment;
FIG. 4 is a third schematic layout of a myopia prevention and control optical lens in accordance with the first embodiment;
FIG. 5 is a diagram showing a layout of a myopia prevention and control optical lens in accordance with the first embodiment;
FIG. 6 is a schematic view showing defocus variation of the central optical zone and peripheral myopia defocus zone of the myopia prevention and control optical lens according to the first embodiment;
fig. 7 is a schematic cross-sectional layout of a myopia prevention and control optical lens in the first embodiment.
Fig. 8 is a table diagram showing defocus amounts of defocus microlens rings in the inside-out direction of a myopia prevention and control optical lens in the second embodiment.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Embodiment one:
referring to fig. 1 and 8, the invention provides a myopia prevention and control optical lens 1, wherein the lens 1 comprises a central optical zone 11 and a peripheral myopia defocus zone 12, the diopter of the peripheral myopia defocus zone 12 is larger than that of the central optical zone 11, a plurality of defocus micro-lens rings 2 which are annularly arranged and encircle the central optical zone 11 are arranged on the peripheral myopia defocus zone 12, and a spacing zone 13 is formed between two adjacent defocus micro-lens rings 2; the defocused microlens ring 2 includes a plurality of microlenses 21 arranged in an annular array.
The arrangement mode of the defocusing micro lens rings 2 is as shown in figure 1, and a plurality of defocusing rings with different diameters are arranged along the same axis; the myopia prevention and control optical lenses 1 are arranged in a mode that the lenses are arranged in a peripheral myopia defocus area 12 through a preset arrangement rule, such as an annular array arrangement rule;
the working principle of the invention is as follows: the central position of the lens 1 is a central optical zone 11 for conventional vision correction, i.e. to bring the incident light to a clear focus on the retina; the peripheral myopia defocusing area 12 is provided with a plurality of levels of defocusing micro lens rings 2, the defocusing micro lens rings 2 comprise a plurality of micro lenses 21 which are arranged in an annular array, the micro lenses 21 are arranged around the central optical area, the multi-level defocusing micro lens rings 2 and the interval areas are alternately arranged, the defocusing difference between the central optical area and the peripheral myopia defocusing area is reduced, a vision correction buffer area is formed, a user is helped to adapt to the change of optical power after wearing, and accordingly wearing comfort of the user is improved.
Specifically, the diameters D of the microlenses 21 are all linearly and incrementally increased by a first difference, and the first difference is greater than 0; and the defocus amounts of the microlenses 21 provided with the plurality of stages of defocus microlens rings 2 are equal; this progressive design helps the user to better accommodate the defocus region, alleviating the severity of the transition in visual comfort.
Among them, the defocus amounts of the microlenses 21 are all preferably 3.5D. The first microlens 21 is a microlens 21 close to one microlens 21 of the central optical area 11, and the N-th microlens 21 is a 3.5D defocus amount in sequence, where N is a natural number greater than 1.
Specifically, the defocus amounts of the several defocus microlens rings 2 and the microlenses 21 are equal, and this consistency helps to maintain visual quality while allowing the user to adapt to changes in light focus at different viewing distances.
This design, known as "defocus" or "multifocal" is intended to adjust the light focus of the eye to maximize the accommodation of the eye and delay or even stop the progression of myopia.
In general, the myopia prevention and control optical lens of the scheme has the following advantages:
1. peripheral defocus effectiveness improves: the diameter and the gap of the micro lens on the lens gradually increase from inside to outside. The design of the progressive arrangement microlens is matched with the distribution pattern of the receptive field of the brain neurons on the retina, which is beneficial to triggering strong neuron reaction to slow down the growth of eyes.
2. Visual adaptability and comfort enhancement: the primary and secondary peripheral defocus designs give vision with center to peripheral excess steps, thus reducing discontinuities and wobble effects and improving adaptability. The enhancement defocus microlens improves the defocus amplitude of the 2-6 th defocus microlens ring, and does not interfere with central vision while improving defocus amount, so that the contradiction between comfort and adaptability of enhancing myopia prevention and control effect by improving defocus amount is relieved.
As one of the defocus amount arrangement modes of the peripheral myopic defocus region 12 and the defocus microlens ring 2 in this embodiment, defocus amounts of the plurality of defocus microlens rings 2 are 3.5D; along the outward radial direction of the central optical zone 11, the defocus amount of the peripheral myopia defocus zone 12 is linearly increased between 1D and 1.5D so as to form a primary myopia defocus zone; several stages of annular arranged defocus microlens rings 2 to form a secondary myopic defocus region. This arrangement helps create a gentle visual transition area and also helps minimize visual discomfort while maintaining a consistent visual quality. The progressive changes can also better stimulate ocular accommodation and help prevent and treat myopia progression.
In the present embodiment, the widths 13 of the spacers are arranged in linear increments by a second difference in the radial direction outward of the central optical zone 11; or the width of any of the spacers 13 is a constant k. Keeping the width of the spacer region 13 constant simplifies the lens design and manufacturing process, simplifies the design of the arrangement of the defocus microlens ring 2, and does not need to be customized for each individual region.
In this embodiment, the lens 1 has opposite front and rear surfaces 14, 15;
the two-dimensional optical imaging lens is distributed on different surfaces, a primary myopia defocus region is arranged on the front surface 14, and a secondary myopia defocus region is arranged on the rear surface 15; this design allows the two regions to be independent of each other in terms of manufacturing process and performance, and allows for more flexibility in the manufacturing process to optimize the performance of the lens.
Alternatively, concentrated on the same surface, the primary myopic defocus region and the secondary myopic defocus region are provided simultaneously on the front surface 14. Making the lens manufacturing process potentially simpler and less expensive because only one surface needs to be treated and may have an advantage over the overall performance of the lens.
In the embodiment, the peripheral myopia defocus region is further provided with an enhanced defocus microlens ring 3, the enhanced defocus microlens ring 3 comprises a plurality of enhanced defocus microlenses 31 arranged in an annular array, and the defocus amounts of the plurality of enhanced defocus microlenses 31 are equal and larger than the defocus amount of the microlenses 21;
among them, the enhanced defocus amount of the defocus microlens 31 is preferably 5.0D; wherein the enhanced defocus microlens ring 31 is any two-stage defocus microlens ring 2 between the third stage and the sixth stage from inside to outside of the peripheral myopic defocus region 12.
It should be noted that, the defocus amount of the enhanced defocus microlens 31 is 5.0D, which is larger than that of other lenses, so that the vision system generates a larger visual response, and the enhanced defocus stimulus is helpful to further control and prevent the development of myopia while ensuring the normal remote vision in the central optical zone; due to the presence of the enhanced defocus microlenses, the lens will have more defocus levels, can cover a greater visual range, which helps to improve the adaptability of the eye and reduce visual discomfort. And the enhanced defocus microlens ring 31 is positioned at any two-stage defocus lens 2 between the third stage and the sixth stage of the peripheral myopia defocus region 12 from inside to outside, which provides a progressive defocus manner that smoothes the defocus variation encountered by the user's line of sight while moving, thereby enhancing visual comfort and continuity.
In the present embodiment, the pitches between any adjacent two microlenses 21 on any one circumference are equal. I.e. the microlenses 21 are uniformly arranged on the lens 1, which is beneficial to improving the uniformity of visual light transmission.
In the present embodiment, the number of microlenses 21 in the peripheral myopic defocus region 12 has a maximum value when two adjacent microlenses 21 are connected and intersect at one point; the number of microlenses 21 in the peripheral myopic defocus region 12 ranges from 80% to 100% of the maximum.
Specifically, the microlenses 21 include a plurality of microlenses 21 distributed along the circumferential direction thereof, and the pitches between any two adjacent microlenses 21 are equal. By means of the number of microlenses 21 of the ring-shaped subsection, the light diffusion can be controlled more finely. Because of the relatively small dimensions of the microlenses 21, they allow for precise control of the incident light, changing its direction, creating defocus, and thus forming a beam of the desired shape and size.
Embodiment two:
the invention also provides a myopia-inhibiting therapeutic apparatus comprising the myopia-preventing and controlling optical lens 1 according to the first embodiment. The myopia prevention and control optical lens 1 of different forms can be used by the myopia prevention and control therapeutic apparatus to meet the needs or preferences of different users. These myopia prevention and control optical lenses 1 can provide detailed vision correction and better visual experience through their unique designs, the installation positions of the defocus microlens ring 2 and the microlenses 21, and the arrangement of defocus amounts.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A myopia prevention and control optical lens, which comprises a central optical zone and a peripheral myopia defocus zone, wherein the diopter of the peripheral myopia defocus zone is larger than that of the central optical zone,
the peripheral myopia defocusing area is provided with a plurality of stages of defocusing micro lens rings which are annularly arranged and encircle the central optical area, and a spacing area is formed between two adjacent stages of defocusing micro lens rings; the defocused microlens ring comprises a plurality of microlenses arranged in an annular array.
2. A myopia prevention and control optical lens according to claim 1, wherein the diameters D of a plurality of said microlenses are each linearly and incrementally arranged with a first difference in a radial direction outward of said central optical zone, said first difference being > 0; wherein, the defocus amounts of the microlenses of the defocus microlens ring of a plurality of stages are equal.
3. A myopia prevention and control optical lens according to claim 1, wherein the defocus amount of the peripheral myopia defocus region is linearly increased between 1d and 1.5d along the radial direction of the central optical zone to form a primary myopia defocus region; and a plurality of stages of the defocused microlens rings are annularly arranged to form a secondary myopia defocusing area.
4. A myopia prevention and control optical lens according to claim 3, wherein the width of any of said spacers is constant k in a radial direction outward of said central optical zone.
5. A myopia prevention and control optical lens according to claim 3, wherein the width of said spacer zone is linearly and incrementally arranged by a second difference in a radial direction outwardly of said central optical zone.
6. A myopia prevention and control optical lens according to claim 4 or 5, wherein the lens has opposed front and rear surfaces;
the primary myopia defocus region and the secondary myopia defocus region are arranged on the front surface at the same time;
or, the primary near-sighted defocus region is disposed on the rear surface, and the secondary near-sighted defocus region is disposed on the front surface.
7. A myopia prevention and control optical lens according to claim 2, wherein the peripheral myopia defocus region is further provided with an enhanced defocus microlens ring, the enhanced defocus microlens ring comprising a plurality of enhanced defocus microlenses arranged in a ring-shaped array, the defocus amounts of the plurality of enhanced defocus microlenses being equal and greater than the defocus amount of the microlenses;
wherein the enhanced defocus microlens ring is any two-stage defocus microlens ring between a third stage and a sixth stage from inside to outside of the peripheral myopia defocus region.
8. A myopia prevention and control optical lens according to claim 1, wherein the spacing between any two adjacent microlenses on any one of the out-of-focus microlens rings is equal.
9. A myopia prevention and control optical lens according to claim 8, wherein the number of said microlenses in said peripheral myopic defocus region has a maximum when two adjacent said microlenses are connected and intersect at a point;
the number of the microlenses in the peripheral myopic defocus region ranges from 80% to 100% of the maximum.
10. A myopia inhibition treatment apparatus comprising a myopia prevention and control optical lens according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311033195.5A CN116774463A (en) | 2023-08-16 | 2023-08-16 | Myopia prevention and control optical lens and myopia inhibition treatment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311033195.5A CN116774463A (en) | 2023-08-16 | 2023-08-16 | Myopia prevention and control optical lens and myopia inhibition treatment instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116774463A true CN116774463A (en) | 2023-09-19 |
Family
ID=88011874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311033195.5A Pending CN116774463A (en) | 2023-08-16 | 2023-08-16 | Myopia prevention and control optical lens and myopia inhibition treatment instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116774463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117289485A (en) * | 2023-08-25 | 2023-12-26 | 北京大学人民医院 | Myopia prevention and control lens and glasses for preventing and controlling myopia |
-
2023
- 2023-08-16 CN CN202311033195.5A patent/CN116774463A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117289485A (en) * | 2023-08-25 | 2023-12-26 | 北京大学人民医院 | Myopia prevention and control lens and glasses for preventing and controlling myopia |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI559044B (en) | A method and system for retarding the progression of myopia | |
| EP2616876B1 (en) | System for retarding progression of myopia | |
| CN109031696B (en) | Peripheral micro-lens based vision control lens and glasses | |
| JP2019507624A (en) | Multifocal lens with reduced visual impairment | |
| CN218601620U (en) | Myopia out of focus lens and glasses with free curved surface structure | |
| CN116027571B (en) | Myopia defocusing lens and myopia defocusing glasses | |
| CN216434562U (en) | Spectacle lens and optical spectacles | |
| CN116774463A (en) | Myopia prevention and control optical lens and myopia inhibition treatment instrument | |
| TW201927261A (en) | Dual defocus lens | |
| CN215067574U (en) | Myopia prevention and control glasses based on lens array | |
| TWM624890U (en) | Contact lens for myopia control | |
| TW201743114A (en) | Continuous zooming contact lens comprising a central optical region and a peripheral region | |
| CN221351888U (en) | Myopia prevention and control optical lens and myopia inhibition treatment instrument | |
| CN218524972U (en) | Ophthalmic lens and frame glasses with same | |
| CN115903269A (en) | Spectacle lens and frame spectacles | |
| CN213934460U (en) | Myopic, hyperopic and defocused lens | |
| CN115032816A (en) | Composite multifocal and full-focus lens for delaying hyperopia development | |
| CN115728961A (en) | Spectacle lens and optical spectacles | |
| CN219997431U (en) | Optical lens and vision correction and myopia prevention and control device | |
| CN217767087U (en) | Combined type hyperopia lens | |
| CN221261432U (en) | Composite defocusing lens capable of preventing and relieving myopia | |
| CN219778056U (en) | Lens with clear center imaging and blurred periphery imaging | |
| CN221200148U (en) | Peripheral defocused lens with inner sparse and outer dense | |
| CN218037575U (en) | Myopia prevention and control out-of-focus lens | |
| TWI783809B (en) | Myopia Control Contact Lenses |
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 |