Myopia prevention and control lens

Abstract

The utility model discloses a myopia prevention and control lens which is composed of a myopia substrate, a reinforcing layer and an OAR film layer. The center of the convex surface of the myopia substrate is a myopia eye convex surface area, the periphery of the myopia eye convex surface area is provided with an out-of-focus area, a circular micro lens is arranged in the out-of-focus area, a part of the circular micro lens has second refractive power for inhibiting myopia development, and the rest part of the myopia substrate has first refractive power for correcting myopia; the reinforcing layers comprise an inner reinforcing layer and an outer reinforcing layer, and the reinforcing layers are arranged on the convex surface and the concave surface of the myopia substrate; an OAR film layer is arranged on the strengthening layer; the center of the inner OAR film layer is a myopia concave surface area, the inner OAR film layer is provided with a point diffusion area at the periphery of the myopia concave surface area, and concave diffusion points are uniformly distributed in the point diffusion area. According to the utility model, the functions of adjusting ciliary muscles, relieving asthenopia, reducing contrast and inhibiting myopia development can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lenses, and in particular to a myopia prevention and control lens. Background Art

[0002] As people spend more time using electronic devices, long-term close viewing of electronic screens promotes the occurrence and development of myopia. Coupled with factors such as poor environmental lighting, small or blurred handwriting, and lack of outdoor activities, the incidence of myopia is increasing worldwide. Under normal circumstances, when the eye is relaxed, parallel light from the outside world enters the eye and its focus falls on the retina, forming a clear image. This is called emmetropia; if the focus cannot fall on the retina, it is called non-emmetropia, which is refractive error. Myopia is when parallel light enters the eye in a relaxed state of accommodation and focuses in front of the retina, which prevents a clear image from being formed on the retina. The occurrence and development of myopia is characterized by gradualness, superposition, and irreversibility. Once it is formed, the opportunity for prevention and control will be lost. Therefore, the prevention and control of myopia is of great medical and social significance.

[0003] Currently, most myopia lenses on the market are single-vision lenses. When worn, the peripheral areas around the eyes will show a similar phenomenon to presbyopia, resulting in unclear vision. In order to see the surrounding objects clearly, the eyeball will actively adjust, causing the ciliary muscle to tighten, forcing the eye axis to lengthen, and over time, deepening the development of myopia. In response to this, industry insiders have improved the structure of myopia lenses, developed and designed various myopia suppression lenses, and there are countless related patents, but the effect of suppressing myopia is still not good.

[0004] In view of this, the inventor, relying on the rich experience accumulated from long-term lens production and manufacturing, conducted in-depth research on existing lenses and developed and designed a myopia prevention and control lens to inhibit the development of myopia, which resulted in this case. Utility Model Content

[0005] The purpose of the utility model is to provide a myopia prevention and control lens, which can adjust the ciliary muscle, relieve visual fatigue, reduce contrast, and inhibit the development of myopia.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] A myopia prevention and control lens, comprising a myopia substrate, a strengthening layer and an OAR film layer; the convex surface center of the myopia substrate is a convex surface area for myopia eyes, the myopia substrate is provided with a defocusing area at the periphery of the convex surface area for myopia eyes, convex circular microlenses are evenly arranged in the defocusing area, the circular microlens part on the myopia substrate has a second refractive power for inhibiting the development of myopia of the eyes, and the remaining part of the myopia substrate except the circular microlenses has a first refractive power for correcting myopia; the strengthening layer comprises an inner strengthening layer and an outer strengthening layer, the outer strengthening layer is arranged on the convex surface of the myopia substrate, and the inner strengthening layer is arranged on the concave surface of the myopia substrate; the OAR film layer comprises an inner OAR film layer and an outer OAR film layer, the outer OAR film layer is arranged on the outer strengthening layer, and the inner OAR film layer is arranged on the inner strengthening layer; the center of the inner OAR film layer is a concave surface area for myopia eyes, the inner OAR film layer is provided with a point diffusion area at the periphery of the concave surface area for myopia eyes, and concave diffusion points are evenly arranged in the point diffusion area.

[0008] The thickness of the strengthening layer is 3-8 μm.

[0009] The thickness of the OAR coating layer is 90-110 nm.

[0010] On the convex surface of the myopia substrate, the top of the circular microlens protrudes out of the outer OAR film layer.

[0011] The power of the circular microlens is from +2.00D to +6.00D.

[0012] The convex surface area of ​​the myopic eye is larger than the concave surface area of ​​the myopic eye, and the defocus area is less than or equal to the point spread area.

[0013] The diameter of the convex area of ​​the myopic eye is 7-12 mm, the diameter of the concave area of ​​the myopic eye is 5 mm, the diameter of the defocused area is 40-70 mm, and the diameter of the point diffusion area is 70-76 mm.

[0014] The diameter of the diffusion points is 0.2 mm, and the depth of the diffusion points is 0.1-0.8 mm.

[0015] The defocused area has 377-522 circular microlenses of a certain size arranged in a certain regular pattern, and a plurality of main spokes radiating outward are evenly arranged in the defocused area, and an additional spoke is arranged between every two main spokes; 10 gradually larger circular microlenses are distributed on each main spoke, so as to form 10 main rings, and the distance from the optical center position of the lens to the center point position of the smallest circular microlens on the main spoke is 6.2mm-6.4mm, and the smallest circular microlens on the main spoke constitutes the first main ring on the main spoke, and the distance from the optical center position of the lens to the center point position of the largest circular microlens on the main spoke is 18.8mm-22.6mm, and the largest circular microlens on the main spoke constitutes the tenth main ring on the main spoke. The number of circular microlenses on the rings from the first main ring to the tenth main ring is the same, 26-36 on each; each additional spoke is also distributed with gradually larger circular microlenses, the number of circular microlenses on two adjacent additional spokes is different, and the positions of the circular microlenses on two adjacent additional spokes are staggered, one is composed of 4 gradually larger circular microlenses, and the other is composed of 5 gradually larger circular microlenses, and they are arranged in a cyclic series to form 9 additional rings on the additional spokes, the number of circular microlenses on each additional ring is the same, 13-18 microlenses, and each circular microlens on the additional spoke is distributed in the middle of the 4 circular microlenses on the two adjacent main spokes.

[0016] The diameter of the circular microlens of the first main ring of the main spoke is 0.4mm-0.8mm; the diameter of the circular microlens of the second main ring is 0.6mm-1.0mm, and so on. As the diameter of the circular microlens of the main ring gradually increases, the diameter of the circular microlens of the tenth main ring is 2.2mm-2.6mm, and the distance between the microlens edges of the main rings is 0.1mm.

[0017] The diameter of the first additional ring of circular microlenses of the additional spokes is 0.4mm-0.6mm; the diameter of the second additional ring of circular microlenses is 0.5mm-0.7mm, and so on. The diameter of the circular microlenses in the additional rings gradually increases, and the diameter of the circular microlenses in the ninth additional ring is 1.2mm-1.4mm.

[0018] After adopting the above structure, the utility model adds a convex circular microlens to the defocus area outside the convex area of ​​the myopic eye on the basis of the myopic lens. The design of the circular microlens is based on the principle of the hyperopia lens. The circular microlens is used to move the image behind the retina to the front of the retina by using the reverse principle of the circular microlens and the myopic lens, so that people can see things easily and the ciliary muscle is relaxed. To a certain extent, the ciliary muscle is relieved and adjusted, so it has the effect of myopia prevention and control. At the same time, the utility model adds a concave diffusion point to the point diffusion area outside the concave area of ​​the myopic eye on the basis of the myopic lens, which can diffuse the light, reduce the contrast by soft scattered light, and further play the effect of inhibiting myopia. The utility model also adds a strengthening layer and an OAR film layer, so that the lens has the effect of wear resistance and scratch resistance, and reduces the reflected light on the back of the lens to the eye, so that the line of sight is clearer. The strengthening layer and the OAR film layer are further used to protect the circular microlens on the surface of the myopic lens, reduce the depression between the circular microlenses, avoid the adhesion of dirt, and enhance the effect of myopia prevention and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model (the concave surface can be seen through, and the concave surface is shown by a dotted line);

[0021] Figure 2 yes Figure 1 sectional diagram of

[0022] Figure 3 yes Figure 2 A partial enlarged view of

[0023] Figure 4 yes Figure 2 Magnified top view (only the convex surface is shown);

[0024] Figure 5 yes Figure 4 A partial enlarged view of

[0025] Figure 6 yes Figure 2 Magnified image viewed from above (looking at the concave surface only).

[0026] Description of symbols

[0027] Myopia base 10, main spokes 11, additional spokes 12, main ring 13, additional ring 14;

[0028] Inner strengthening layer 21, outer strengthening layer 22;

[0029] Inner OAR membrane layer 31, outer OAR membrane layer 32;

[0030] The convex surface area A1 of the eye for myopia and the concave surface area A2 of the eye for myopia;

[0031] Defocused area B, circular microlens B1;

[0032] Point diffusion area C, diffusion point C1;

[0033] Diameter D1, diameter D2, diameter D3, diameter D4;

[0034] Distance L1, distance L2. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0036] It should be noted that the terms front, back, inside, outside, top, bottom, left, right, first, second, third, etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features, unless otherwise clearly and specifically defined.

[0037] like Figures 1 to 6 As shown, the utility model discloses a myopia prevention and control lens, which is composed of a myopia substrate 10, a strengthening layer and an OAR film layer. The strengthening layer includes an inner strengthening layer 21 and an outer strengthening layer 22. The OAR film layer includes an inner OAR film layer 31 and an outer OAR film layer 32.

[0038] Among them, the convex center of the myopic substrate 10 is the convex area A1 for myopic eyes, and the myopic substrate 10 sets a defocus area B on the periphery of the convex area A1 for myopic eyes. Raised circular microlenses B1 are evenly distributed in the defocus area B. The circular microlenses B1 on the myopic substrate 10 have a second refractive power for inhibiting the development of myopia of the eyes, and the rest of the myopic substrate 10 except the circular microlenses B1 has a first refractive power for correcting myopia.

[0039] An inner strengthening layer 21 is provided on the concave surface of the myopia substrate 10 by coating, and an outer strengthening layer 22 is provided on the convex surface of the myopia substrate 10 by coating. The thickness of the inner strengthening layer 21 and the outer strengthening layer 22 are both 3-8 μm, so that the lens has the effect of wear resistance and scratch resistance.

[0040] An inner OAR film layer 31 is provided on the inner strengthening layer 21 by vacuum evaporation, and an outer OAR film layer 32 is provided on the outer strengthening layer 22 by vacuum evaporation. The thickness of the inner OAR film layer 31 and the outer OAR film layer 32 are both 90-110 nm, which can reduce the reflected light from the back of the lens to the eyes, making the vision clearer.

[0041] The center of the inner OAR film layer 31 is the myopic eye concave area A2. The inner OAR film layer 31 is provided with a point diffusion area C on the periphery of the myopic eye concave area A2 by engraving. In the point diffusion area C, concave diffusion points C1 are evenly distributed.

[0042] The preferred design is that the degree of the circular microlens B1 is +2.00D to +6.00D. On the convex surface of the myopic substrate 10, the top of the circular microlens B1 protrudes from the outer OAR film layer 32. The convex area A1 of the myopic eye is larger than the concave area A2 of the myopic eye, the diameter D1 of the convex area A1 of the myopic eye is 7-12mm, the diameter D4 of the concave area A2 of the myopic eye is 5mm, and the defocus area B is less than or equal to the point diffusion area C, the diameter D2 of the defocus area B is 40-70mm (the figure is a schematic diagram of an embodiment with a diameter D2 of 44mm), and the diameter D3 of the point diffusion area C is 70-76mm. The diameter of the diffusion point C1 is 0.2mm, and the engraving depth of the diffusion point C1 is 0.1-0.8mm.

[0043] The utility model adds a convex circular microlens B1 to the defocus area B outside the convex area A1 of the myopic eye on the basis of the myopic lens 10, which can not only correct the central vision, but also improve the peripheral vision, so as to achieve the effect of controlling the development of myopia. At the same time, the utility model adds a concave diffusion point C1 to the point diffusion area C outside the concave area A2 of the myopic eye on the basis of the myopic lens 10. When the light passes through these diffusion points C1, the light can be diffused, forming a more uniform light distribution on the retina, and reducing the signal gap between adjacent cone cells on the retina, that is, reducing the contrast of the peripheral visual field of the retina, achieving the slowing down of the eye axis development speed, thereby slowing down the increase of myopia, and further playing the effect of inhibiting myopia. The utility model adds strengthening layers (inner strengthening layer 21 and outer strengthening layer 22) to make the lens wear-resistant and scratch-resistant, and adds OAR film layers (inner OAR film layer 31 and outer OAR film layer 32) to reduce the reflected light from the back of the lens to the eyes, making the vision clearer. The strengthening layer and the OAR film layer are combined to protect the circular microlenses B1 on the surface of the myopia lens 10, reduce the depressions between the circular microlenses B1, avoid the adhesion of dirt, and improve the effect of myopia prevention and control.

[0044] The optimized design of the utility model is that when the diameter D2 of the defocused area B is 44 mm, the defocused area B is designed with 377-522 circular microlenses B1 of a certain size and a certain regular arrangement. The defocused area B is evenly arranged with a number of main spokes 11 radiating outward, and an additional spoke 12 is arranged between every two main spokes 11. This design is similar to the radiating fibers in the ciliary muscle of the human eye. Ten gradually larger circular microlenses B1 are distributed on each main spoke 11, forming ten main rings 13. The distance L1 from the optical center of the lens to the center of the smallest circular microlens B1 on the main spoke 11 is 6.2 mm-6.4 mm. The smallest circular microlenses B1 on the main spoke 11 form the first main ring 13. The distance L2 from the optical center of the lens to the center of the largest circular microlens B1 on the main spoke 11 is 18.8-22.6 mm. The largest circular microlenses B1 on the main spoke 11 form the tenth main ring 13. The number of circular microlenses B1 on the first main ring 13 to the tenth main ring 13 is the same, 26-36 each. Each additional spoke 12 is also distributed with gradually larger circular microlenses B1. The number of circular microlenses B1 on two adjacent additional spokes 12 is different, and the positions of the circular microlenses B1 on two adjacent additional spokes 12 are staggered. One is composed of 4 gradually larger circular microlenses B1, and the other is composed of 5 gradually larger circular microlenses B1. They are arranged in a cyclic series to form 9 additional rings 14 on the additional spoke 12. The number of circular microlenses B1 on each additional ring 14 is the same, that is, 13-18 microlenses. Each circular microlens B1 on the additional spoke 12 is distributed in the middle of the 4 circular microlenses B1 on two adjacent main spokes 11.

[0045] The utility model further comprises that the diameter of the circular microlens B1 on the first main ring 13 of the main spoke 11 is 0.4mm-0.8mm; the diameter of the circular microlens B1 on the second main ring 13 is 0.6mm-1.0mm, and so on, the diameter of the circular microlens B1 gradually increases with the main ring, and the diameter of the circular microlens B1 on the tenth main ring 13 is 2.2mm-2.6mm, and the distance between the microlens edges between the main rings is 0.1mm. The diameter of the circular microlens B1 on the first additional ring 14 of the additional spoke 12 is 0.4mm-0.6mm; the diameter of the circular microlens B1 on the second additional ring 14 is 0.5mm-0.7mm, and so on, the diameter of the circular microlens B1 on the additional ring 14 gradually increases, and the diameter of the circular microlens B1 on the ninth additional ring 14 is 1.2mm-1.4mm.

[0046] Of course, the diameter D2 of the defocused area B can also be adjusted within the range of 40-70 mm. Accordingly, the total number of circular microlenses B1, the number of circles of the main ring 13 and the additional ring 14, and the number of circular microlenses B1 on the main ring 13 and the additional ring 14 will also change accordingly. Although these changes are not illustrated one by one in this article, they all fall within the protection scope of this case.

[0047] The utility model is based on the characteristic that the microlens is designed to gradually increase in diameter as the ring goes outward, and its area gradually increases until the outermost circle reaches the maximum, which is more in line with the characteristics of the eyes' vision. The microlens area at the edge of the eye is larger, and the ciliary muscle can be more relaxed when looking at objects, which relieves eye fatigue and prevents myopia from getting worse. The utility model can play the role of myopia prevention and control by forming a circle of gradually increasing circular microlenses B1. The reason is that the design of the microlens is based on the principle of hyperopia lenses. The ciliary muscles of myopic people are in a tense state for a long time, while the microlens and myopic lenses are the opposite principle, which moves the image behind the retina to the front of the retina, making it easier for people to see objects, and the ciliary muscles are relaxed. To a certain extent, it relieves and regulates the ciliary muscles, so it has the effect of myopia prevention and control. The utility model is composed of many circular micro lenses B1 to form the main spoke 11 and the additional spoke 12. This structural design is more in line with the characteristics of the eyeball. By designing a radial fiber shape similar to the ciliary muscle of the human eye, the adjustment effect on the ciliary muscle is more flexible. The further out, the larger the circle, the larger the micro lens, the easier it is for the eyeball to look at nearby objects around, further relieving the tension of the ciliary muscle of the eyeball and inhibiting the growth of myopia. The design of the additional spoke 12 makes up for the situation that the gap between the main spokes 11 and the main spokes 11 is too large, resulting in poor myopia inhibition effect, making the myopia prevention and control technology more accurate.

[0048] When the utility model is processed and produced, taking PC lenses as an example, the specific process steps are as follows:

[0049] In the first step, the raw material is PC material, the plastic pellets are dehumidified, and the mold is injection molded to form the myopia substrate 10.

[0050] During the injection molding, a circular microlens B1 is formed on the myopic substrate 10 through a mold, so that the convex surface of the myopic substrate 10 forms a myopic eye convex surface area A1 and a defocus area B. The power of the circular microlens B1 is controlled within a range of +2.00D to +6.00D, the diameter D1 of the myopic eye convex surface area A1 is controlled within a range of 7-12mm, and the diameter D2 of the defocus area B is controlled within a range of 40-70mm.

[0051] In the second step, an inner strengthening layer 21 and an outer strengthening layer 22 are formed on the concave and convex surfaces of the myopia substrate 10 by coating. The thickness of the inner strengthening layer 21 and the outer strengthening layer 22 is controlled at 3-8 μm, so that the lens has the effect of wear resistance and scratch resistance.

[0052] In the third step, an inner OAR film layer 31 and an outer OAR film layer 32 are formed on the inner strengthening layer 21 and the outer strengthening layer 22 by vacuum evaporation. The thickness of the inner OAR film layer 31 and the outer OAR film layer 32 is controlled at 90-110 nm, which can reduce the reflected light from the back of the lens to the eyes and make the vision clearer.

[0053] At this time, the top of the circular microlens B1 on the convex surface of the myopia substrate 10 may slightly protrude from the outer OAR film layer 32 .

[0054] In the fourth step, a plurality of diffusion points C1 are formed on the surface of the inner OAR film layer 31 by laser engraving to form a myopic eye concave area A2 and a point diffusion area C. The diameter D4 of the myopic eye concave area A2 is controlled at 5 mm, and the diameter D3 of the point diffusion area C is controlled at 70-76 mm. The size of the diffusion points C1 is consistent, the diameter of the diffusion points C1 is controlled at 0.2 mm, and the engraving depth of the diffusion points C1 is controlled at 0.1-0.8 mm.

[0055] At this point, the processing and production of the myopia prevention and control lens of the utility model is completed.

[0056] In summary, the utility model increases the effective defocus area through the design of the circular microlens B1, the main spoke 11, and the additional spoke 12, and combines the point diffusion technology to reduce the contrast through soft scattered light, reduce the retinal photoreceptor cells to detect high-contrast signals and reduce the elongation signals sent to the eyes, better inhibit the growth of the eye axis, and delay the deepening of myopia. Through the strengthening layer and the OAR film layer, the lens has the effect of wear and scratch resistance, protects the defocus structure, and can reduce the reflection of the back of the lens to the eyes, making the vision clearer.

[0057] The above is only an example of the implementation of the utility model, and is not intended to limit the protection scope of the utility model. It should be pointed out that equivalent changes made by technicians in this field according to the design ideas of this case after reading this specification all fall within the protection scope of this case.

Claims

1. A myopia prevention and control lens, characterized in that: The invention is composed of a myopia substrate, a strengthening layer and an OAR film layer; the convex center of the myopia substrate is the convex area of ​​the myopic eye, the myopic substrate is provided with a defocus area on the periphery of the convex area of ​​the myopic eye, and convex circular microlenses are evenly arranged in the defocus area, the circular microlens part on the myopic substrate has a second refractive power for inhibiting the development of myopia of the eye, and the rest of the myopic substrate except the circular microlenses has a first refractive power for correcting myopia; the strengthening layer comprises an inner strengthening layer and an outer strengthening layer, the outer strengthening layer is arranged on the convex surface of the myopic substrate, and the inner strengthening layer is arranged on the concave surface of the myopic substrate; the OAR film layer comprises an inner OAR film layer and an outer OAR film layer, the outer OAR film layer is arranged on the outer strengthening layer, and the inner OAR film layer is arranged on the inner strengthening layer; the center of the inner OAR film layer is the concave area of ​​the myopic eye, the inner OAR film layer is provided with a point diffusion area on the periphery of the concave area of ​​the myopic eye, and concave diffusion points are evenly arranged in the point diffusion area.

2. The myopia prevention and control lens according to claim 1, characterized in that: The thickness of the strengthening layer is 3-8 μm.

3. The myopia prevention and control lens according to claim 1, characterized in that: The thickness of the OAR film layer is 90-110 nm.

4. The myopia prevention and control lens according to claim 1, characterized in that: On the convex surface of the myopia substrate, the top of the circular microlens protrudes out of the outer OAR film layer.

5. The myopia prevention and control lens according to claim 1, characterized in that: The power of the circular microlens is from +2.00D to +6.00D.

6. The myopia prevention and control lens according to claim 1, characterized in that: The convex surface area of ​​the myopic eye is larger than the concave surface area of ​​the myopic eye, and the defocus area is less than or equal to the point spread area.

7. The myopia prevention and control lens according to claim 6, characterized in that: The diameter of the convex area of ​​the myopic eye is 7-12 mm, the diameter of the concave area of ​​the myopic eye is 5 mm, the diameter of the defocused area is 40-70 mm, and the diameter of the point diffusion area is 70-76 mm.

8. The myopia prevention and control lens according to claim 1, characterized in that: The diameter of the diffusion points is 0.2 mm, and the depth of the diffusion points is 0.1-0.8 mm.

9. The myopia prevention and control lens according to claim 1, characterized in that: The defocused area has 377-522 circular microlenses of a certain size arranged in a certain regular pattern, and a plurality of main spokes radiating outward are evenly arranged in the defocused area, and an additional spoke is arranged between every two main spokes; 10 gradually larger circular microlenses are distributed on each main spoke, so as to form 10 main rings, and the distance from the optical center position of the lens to the center point position of the smallest circular microlens on the main spoke is 6.2mm-6.4mm, and the smallest circular microlens on the main spoke constitutes the first main ring on the main spoke, and the distance from the optical center position of the lens to the center point position of the largest circular microlens on the main spoke is 18.8mm-22.6mm, and the largest circular microlens on the main spoke constitutes the tenth main ring on the main spoke. The number of circular microlenses on the rings from the first main ring to the tenth main ring is the same, 26-36 on each; each additional spoke is also distributed with gradually larger circular microlenses, the number of circular microlenses on two adjacent additional spokes is different, and the positions of the circular microlenses on two adjacent additional spokes are staggered, one is composed of 4 gradually larger circular microlenses, and the other is composed of 5 gradually larger circular microlenses, and they are arranged in a cyclic series to form 9 additional rings on the additional spokes, the number of circular microlenses on each additional ring is the same, 13-18 microlenses, and each circular microlens on the additional spoke is distributed in the middle of the 4 circular microlenses on the two adjacent main spokes.

10. The myopia prevention and control lens according to claim 9, characterized in that: The diameter of the circular microlens of the first main ring of the main spoke is 0.4mm-0.8mm; the diameter of the circular microlens of the second main ring is 0.6mm-1.0mm, and so on. As the diameter of the circular microlens of the main ring gradually increases, the diameter of the circular microlens of the tenth main ring is 2.2mm-2.6mm, and the distance between the microlens edges of the main rings is 0.1mm; the diameter of the circular microlens of the first additional ring of the additional spoke is 0.4mm-0.6mm; the diameter of the circular microlens of the second additional ring is 0.5mm-0.7mm, and so on. As the diameter of the circular microlens of the additional ring gradually increases, the diameter of the circular microlens of the ninth additional ring is 1.2mm-1.4mm.

Images