Myopia prevention and control lens

Abstract

The utility model discloses a myopia prevention and control lens relates to ophthalmic product field for solving the problem that the existing myopia management lens can produce visual deformation and surge effect. Myopia prevention and control lens is used to be placed in the corresponding eye before, including base sheet, and base sheet is provided with a plurality of micro -units, and a plurality of micro -units are arranged with the center of base sheet as the center with ring array, and the distance of the micro -unit of same ring to the center of base sheet is same, micro -unit is provided with the convex surface or / and the concave surface, so that when incident light is incident to base sheet, the light of micro -unit is refracted after the convex surface or / and the concave surface of micro -unit, and the direction of propagation is divergent, and the light of refraction further enters the corresponding eye, and the light of refraction through different positions of same micro -unit enters the corresponding eye and is incident to different positions in the corresponding eye. Myopia prevention and control lens makes the proportion of ambient light entering the corresponding eye increase, and the proportion of imaging light reduces, plays the role of preventing and controlling myopia occurrence and development, and reduces the visual deformation, jump and surge effect of producing.

Description

Technical Field

[0001] This utility model relates to the field of ophthalmic products, and in particular to a myopia control lens. Background Technology

[0002] Currently, myopia management lenses used to control myopia progression and axial elongation include multi-point defocus lenses. These lenses are designed based on defocus theory, which posits that the occurrence of myopia is closely related to the focusing state of the peripheral retina. When the peripheral retina is in a hyperopic defocus state, it stimulates posterior axial elongation, leading to the onset and progression of myopia. Conversely, when the peripheral retina is in a myopic defocus state, it slows axial elongation, thereby controlling the development of myopia.

[0003] Existing multi-point defocus lenses are designed with a central optical zone and a peripheral defocus zone. The central optical zone provides sufficient refractive power to ensure visual clarity, while the peripheral defocus zone contains multiple small convex lenses to provide myopia-specific defocus. However, multi-point defocus lenses have the following drawbacks: the multiple positive refractive power convex lenses in the peripheral defocus zone cause significant distortion of peripheral objects; when the line of sight moves, especially when viewing objects through the peripheral defocus zone, there is a noticeable surging effect, and the distortion becomes more pronounced. This reduces the user's visual clarity, resulting in a poor user experience, requiring an adaptation period, and there are also cases where users cannot adapt at all. Utility Model Content

[0004] The purpose of this invention is to provide a myopia control lens that can prevent the occurrence and development of myopia and reduce visual distortion, jump, and surge effects.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A myopia control lens for placement in front of the corresponding eye includes a substrate, wherein the substrate is provided with a plurality of micro-units, the plurality of micro-units being arranged in a ring array with the center of the substrate as the center, and the micro-units belonging to the same ring being equidistant from the center of the substrate.

[0007] The micro-unit is provided with a convex surface and / or a concave surface, such that when incident light is incident on the substrate, the light incident on the micro-unit is refracted by the convex surface and / or the concave surface of the micro-unit and then its propagation direction is diverged. The refracted light further enters the corresponding eye, so that when the light refracted at different positions of the same micro-unit enters the corresponding eye, it is incident at different positions in the corresponding eye; the micro-unit is provided with multiple convex surfaces, or the micro-unit is provided with multiple concave surfaces, or the micro-unit is provided with at least one convex surface and at least one concave surface.

[0008] In some embodiments, the convex surface is a curved surface and / or the concave surface is a curved surface.

[0009] In some embodiments, if the micro-unit is provided with at least one convex surface and at least one concave surface, the at least one convex surface and the at least one concave surface form a continuous curved surface.

[0010] In some embodiments, the microunit is provided with at least one columnar protrusion, the surface of which is provided with a convex surface and / or a concave surface.

[0011] In some embodiments, the micro-unit is provided with at least one columnar protrusion and at least one curved protrusion / curved concave portion, the surface of the columnar protrusion is provided with a convex surface and / or a concave surface, the surface of the curved protrusion is a curved surface, and the surface of the curved concave portion is a curved surface.

[0012] In some embodiments, the refractive power of the microunit is greater than or equal to +10D, or the refractive power of the microunit is less than or equal to -10D.

[0013] In some embodiments, adjacent micro-units belonging to the same ring are spaced apart, and micro-units from different rings are spaced apart.

[0014] In some implementations, the micro-units belonging to the same ring are evenly arranged along the ring.

[0015] In some embodiments, the ratio of the total area occupied by the micro-units on the substrate to the total area of ​​the substrate is greater than or equal to 5% and less than or equal to 45%.

[0016] In some embodiments, the maximum length of the cross-section of the micro-unit is greater than or equal to 10 micrometers and less than or equal to 300 micrometers.

[0017] As can be seen from the above technical solution, the myopia control lens provided by this utility model is used to be placed in front of the corresponding eye. It includes a substrate with multiple micro-units arranged in a ring array around the center of the substrate. Micro-units belonging to the same ring are equidistant from the center of the substrate. Each micro-unit has a convex surface and / or a concave surface. Specifically, a micro-unit may have multiple convex surfaces, multiple concave surfaces, or at least one convex surface and at least one concave surface. This allows incident light to be refracted by the convex and / or concave surfaces of the micro-units, causing the light to diverge in its propagation direction. The refracted light then enters the corresponding eye, resulting in light refracted at different positions within the same micro-unit entering different positions within the corresponding eye.

[0018] The beneficial effects of this invention are that, by setting micro-units in the lens, a portion of the light entering the corresponding eye through the lens is transformed into ambient light that does not participate in image formation upon entering the corresponding eye. This increases the proportion of ambient light entering the corresponding eye and reduces the proportion of image light entering the corresponding eye, thus playing a role in preventing the occurrence and development of myopia. Furthermore, compared to multi-point defocus lenses, in the myopia control lens of this invention, the light incident on the micro-units is refracted by the micro-units before entering the corresponding eye without participating in image formation, thereby reducing visual distortion, jump, and surge effects. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A top view of a myopia control lens provided in an embodiment of this utility model;

[0021] Figure 2 A schematic diagram of light propagation when object light passes through a normal lens and enters the corresponding eye;

[0022] Figure 3 A schematic diagram of light propagation when incident light from a myopia control lens is incident on a region of the substrate other than the micro-units and enters the corresponding eye, according to an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram showing the propagation of light into the corresponding eye when incident light from a myopia control lens is incident on a micro-unit of the substrate, according to an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of light propagation when object light is incident on the lens and enters the corresponding eye, according to an embodiment of the present invention.

[0025] Figure 6 A partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided for the first embodiment of this utility model;

[0026] Figure 7 A partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the second embodiment of this utility model;

[0027] Figure 8 A partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the third embodiment of this utility model;

[0028] Figure 9 A top view of a micro-unit of a substrate for a myopia control lens provided in the fourth embodiment of this utility model;

[0029] Figure 10 A top view of a micro-unit of a substrate for a myopia control lens provided in the fifth embodiment of this utility model;

[0030] Figure 11 A partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the sixth embodiment of this utility model;

[0031] Figure 12 This is a schematic diagram of light propagation in a myopia control lens as light is incident on the columnar protrusion of the substrate, according to an embodiment of the present invention.

[0032] The reference numerals in the accompanying drawings include:

[0033] 100-Substrate, 101-Micro unit, 102-Convex portion, 103-Concave portion, 104-Columnar convex portion, 105-Central area, 200-Corresponding eye, 201-Object, 202-Normal lens. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0035] This embodiment provides a myopia control lens designed based on the high-resolution optical theory to prevent the occurrence and progression of myopia. A brief introduction to the high-resolution optical theory follows:

[0036] (a) The classification of light entering the eye by the high-angle light theory.

[0037] The high-ambient-light theory divides the light entering the eye into two categories: one category is light that participates in image formation, called imaging light; the other category does not participate in image formation but only provides light perception, called ambient light.

[0038] (II) Specific exposition of Gao Jingguang's theory.

[0039] The theory of high-level illumination consists of the following three principles:

[0040] 1. Principle 1: When the amount of light entering the eye that forms visual perception is constant, the lower the proportion of imaging light to the total amount of light entering the eye and the higher the proportion of ambient light to the total amount of light entering the eye, the more beneficial it is for controlling the occurrence, development and axial elongation of myopia; conversely, the more beneficial it is.

[0041] 2. Principle Two: When the ratio of imaging light to ambient light is constant, the greater the total amount of light that forms visual perception, the better the visual effect, the clearer the image, and the more beneficial it is for controlling the occurrence, development, and axial elongation of myopia; conversely, the less beneficial it is.

[0042] 3. Principle Three: The necessary condition for image formation is that the imaging light must be greater than the ambient light. When the imaging light is greater than the ambient light, the eye will form an image based on the visual image provided by the imaging light; otherwise, an image cannot be formed.

[0043] (III) Theoretical Evidence:

[0044] A study investigated the effects of bright outdoor lighting on eye development. In the middle of a 12-hour daily light cycle, supplemental lighting was applied, increasing the light level from 15-630 lux to 25,000 lux for six hours, under which non-human primates wore diffusers. Most animals tested under these conditions developed morphological deprivation hyperopia. Therefore, at light levels close to natural outdoor conditions, the use of diffusers leads to hyperopic shifts in primates, which is where the evolutionary mechanism of human refractive development comes into play.

[0045] The above animal experiments show that:

[0046] 1. Increasing total illuminance and ambient light illuminance causes the eye axis to shift towards the hyperopic direction (eye axis shortening), which is consistent with principles one and two of the high-lens theory.

[0047] 2. Using a diffuser: This increases ambient light and reduces imaging light, causing farsightedness, which is consistent with the first principle of the high-lens theory.

[0048] Other evidence derived from common sense:

[0049] 3. When using your eyes at close range, natural light is better than using desk lamps or other lighting fixtures. This is because natural light has a higher proportion of ambient light and a lower proportion of imaging light; desk lamps and other lighting fixtures have the opposite effect. This aligns with the first principle of the high-lens theory.

[0050] 4. When using electronic devices such as mobile phones and tablets for close-range work, it is more likely to cause myopia than when reading and writing with books. This is because these electronic devices emit light, resulting in a higher proportion of light used for image formation compared to reading books. This aligns with principle one of the high-resolution theory.

[0051] 5. Using a mobile phone in a dark environment is more likely to cause nearsightedness than using it in a bright environment. This aligns with principle one of the high-resolution theory.

[0052] 6. Daily requirements should be to use the eyes at close range in good lighting conditions as much as possible, which is in line with the second principle of the high-lens light theory.

[0053] 7. When observing stars on a grassland, the number of stars in the night sky is large and clear; however, the number of stars in the city night sky is significantly smaller. This is because the brightness of ambient light (light pollution) in cities is higher than the brightness of the light needed to image the stars, making it impossible to form a clear image. This conforms to the third principle of the high-resolution theory.

[0054] 8. The inability to see stars during the day and the phenomenon of a bright moon and few stars also conform to the third principle of the high-resolution theory.

[0055] 9. Under direct, strong light, other objects cannot be seen, such as when a flashlight shines into the eyes or when an oncoming car uses its high beams. This also conforms to principle three of the high-lens theory.

[0056] Based on the high ambient light theory, this embodiment provides a myopia control lens. The myopia control lens of this embodiment can increase the proportion of ambient light entering the corresponding eye and reduce the proportion of imaging light entering the corresponding eye, thereby playing a role in preventing the occurrence and development of myopia.

[0057] This embodiment provides a myopia control lens for placement in front of the corresponding eye, comprising a substrate, wherein the substrate is provided with a plurality of micro-units, the plurality of micro-units being arranged in a ring array with the center of the substrate as the center, and the micro-units belonging to the same ring being equidistant from the center of the substrate;

[0058] The micro-unit is provided with a convex surface and / or a concave surface, such that when incident light is incident on the substrate, the light incident on the micro-unit is refracted by the convex surface and / or the concave surface of the micro-unit and then its propagation direction is diverged. The refracted light further enters the corresponding eye, so that when the light refracted at different positions of the same micro-unit enters the corresponding eye, it is incident at different positions in the corresponding eye; the micro-unit is provided with multiple convex surfaces, or the micro-unit is provided with multiple concave surfaces, or the micro-unit is provided with at least one convex surface and at least one concave surface.

[0059] The propagation direction of light incident on a micro-unit diverges after being refracted by the convex and / or concave surfaces of the micro-unit. This means that when incident light is incident on a substrate, the light incident on the substrate's micro-units, after being refracted by the convex and / or concave surfaces of the micro-units, does not propagate in the same direction. The refracted light is emitted in different directions.

[0060] Light incident on a micro-unit of the substrate is refracted by the convex and / or concave surfaces of the micro-unit, and the refracted light can then enter the corresponding eye. The light refracted from different positions on the convex and / or concave surfaces of the same micro-unit does not propagate in the same direction; the refracted light exits in different directions. When light with different propagation directions enters the corresponding eye, it arrives at different positions within the eye and cannot converge to the same position. Therefore, the light incident on the substrate's micro-unit cannot converge to form an image when passing through the micro-unit and entering the corresponding eye. This portion of light does not participate in image formation and becomes ambient light providing light perception.

[0061] Light incident on areas other than the micro-cells of the substrate can form an image within the corresponding eye after passing through the substrate; this portion of light is the imaging light.

[0062] On the substrate, the plurality of micro-units are arranged in a ring array with the center of the substrate as the center. Micro-units belonging to the same ring are equidistant from the center of the substrate, and different rings are arranged in ascending order of their distance from the center of the substrate. The distance from a micro-unit to the center of the substrate is the distance from the center of the micro-unit to the center of the substrate.

[0063] The myopia control lens of this embodiment, by setting micro-units in the lens, transforms a portion of the light entering the corresponding eye through the lens into ambient light that does not participate in imaging upon entering the corresponding eye. This increases the proportion of ambient light entering the corresponding eye and reduces the proportion of imaging light entering the corresponding eye, thus playing a role in preventing the occurrence and development of myopia. Furthermore, compared to multi-point defocus lenses, where the convex lenses in the peripheral defocus area cause visual distortion, jump, and surge effects, the myopia control lens of this embodiment, where light incident on the micro-units of the lens is refracted by the micro-units and enters the corresponding eye without participating in imaging, can reduce visual distortion, jump, and surge effects.

[0064] For example, refer to Figure 1 , Figure 1 The figure shows a top view of a myopia control lens according to one embodiment. Multiple micro-units 101 are disposed on a substrate 100. When incident light is incident on the substrate 100, some light is incident on the micro-units 101, and some light is incident on areas of the substrate 100 other than the micro-units 101. The multiple micro-units 101 are arranged in a ring array around the center of the substrate 100, with different rings arranged in ascending order of distance from the center of the substrate 100.

[0065] For example, refer to Figure 2 , Figure 2 This is a schematic diagram illustrating the propagation of light as it passes through a normal lens and enters the corresponding eye. Figure 2The normal lens shown is a concave lens. As shown in the figure, the light from the object 201 passes through the normal lens 202 and enters the corresponding eye 200, forming an image on the retina of the corresponding eye 200.

[0066] When incident light enters this lens, the light incident on areas of the substrate 100 other than the micro-unit 101 can be imaged within the corresponding eye 200 after passing through the substrate 100; this portion of light becomes the imaging light. Further details can be found in the reference. Figure 3 , Figure 4 and Figure 5 , Figure 3 This is a schematic diagram illustrating the light propagation process when incident light from a myopia control lens is incident on a region of the substrate other than the micro-units and enters the corresponding eye, as provided in one embodiment. Figure 3 The substrate 100 of the myopia control lens shown is a concave lens. Light incident on other areas of the substrate 100 besides the micro-units 101, such as light incident on the area between the micro-units 101 of the substrate 100, can be imaged on the retina of the corresponding eye 200 after passing through the substrate 100.

[0067] Figure 4 This is a schematic diagram illustrating the propagation of light into the corresponding eye when incident light from a myopia control lens strikes a micro-unit on a substrate, as provided in one embodiment. Light incident on the micro-unit 101 of the substrate 100 is refracted by the micro-unit 101 and enters the corresponding eye 200, striking the retina. However, due to the refraction of the light by the micro-unit 101, the light propagates in a divergent direction after passing through the micro-unit 101, resulting in inconsistent propagation directions. Consequently, light with different propagation directions enters the corresponding eye 200 at different positions and cannot be focused to form an image.

[0068] Figure 5 This is a schematic diagram illustrating light propagation when object light is incident on a myopia control lens and enters the corresponding eye, as provided in one embodiment. Light incident on areas outside the micro-units 101 of the substrate 100 is focused and imaged after passing through the substrate 100 and entering the corresponding eye 200. Light incident on the micro-units 101 of the substrate 100 can enter the corresponding eye 200 after refraction by the convex and / or concave surfaces of the micro-units 101, but its propagation direction is divergent and inconsistent, resulting in it entering different positions within the corresponding eye 200. This is considered not to participate in image formation and deviates from the image point. An image point refers to the point on the substrate 100 where, if the micro-unit 101 is not present at that location, the light incident on that position is imaged after passing through the substrate 100 and entering the corresponding eye 200.

[0069] Therefore, combining Figure 3 , Figure 4 and Figure 5 As can be understood, this myopia control lens will convert a portion of the light entering the corresponding eye 200 through the lens into ambient light that does not participate in imaging when entering the corresponding eye 200. This increases the proportion of ambient light entering the corresponding eye 200 and reduces the proportion of imaging light entering the corresponding eye 200. Based on the first principle of the high-resolution theory, it can play a role in preventing the occurrence and development of myopia.

[0070] In some embodiments, for the micro-unit 101 disposed on the substrate 100, if it has a convex surface, the convex surface is curved. If the micro-unit 101 has a concave surface, the concave surface is curved. If the micro-unit 101 has both a convex and a concave surface, the convex surface is curved, and the concave surface is curved. The curved surface of the micro-unit 101 allows light incident on the surface to exit in different directions from different positions, resulting in the refracted light not propagating in completely consistent directions. Furthermore, light incident on a curved surface is less prone to reflection, leading to greater refraction. Therefore, the curved surface of the micro-unit 101 allows for maximum light refraction when incident on the micro-unit 101, ensuring that as much light as possible enters the corresponding eye 200. This avoids reduced light entering the corresponding eye 200 due to reflection, which would be detrimental to myopia control and also reduce visual quality.

[0071] In some embodiments, the micro-unit 101 is provided with convex and concave surfaces forming a continuous curved surface, such that when incident light is incident on the micro-unit 101 of the substrate 100, after being refracted by the convex and concave surfaces of the micro-unit 101, the refracted light propagates in different directions as much as possible, and cannot converge to the same position after entering the corresponding eye 200, thus failing to form an image. The micro-unit 101 may be provided with at least one convex surface and at least one concave surface, wherein the at least one convex surface and the at least one concave surface form a continuous curved surface. For example, see [reference needed]. Figure 6 , Figure 6 The figure shows a partial longitudinal cross-sectional view of a myopia control lens substrate provided in the first embodiment. As shown, a micro-unit 101 is provided on one side surface of the substrate 100. The micro-unit 101 is provided with a convex surface and a concave surface forming a continuous curved surface. The surface of the micro-unit 101 is a curved surface with varying concavity and convexity.

[0072] If the micro-unit 101 has multiple convex surfaces, and these convex surfaces are curved, the design of the convex surface shape of the micro-unit 101 should aim to minimize reflection of incident light when it hits the convex surface. Instead, it should refract the light as much as possible upon impact. If light is reflected from the convex surface of the micro-unit 101, the reflected light is unlikely to enter the corresponding eye 200, reducing the amount of light reaching the eye and hindering myopia control, while also lowering visual quality. If the convex surface includes a plane, a plane is more prone to light reflection; therefore, in this embodiment, the convex surface is curved. For example, refer to... Figure 7 , Figure 7 The figure shows a partial longitudinal cross-sectional view of a myopia control lens substrate provided for the second embodiment. Multiple protrusions 102 are provided on one side of the substrate 100, and the surfaces of the protrusions 102 are curved. These protrusions 102 can be considered as small convex lenses.

[0073] If the micro-unit 101 has multiple concave surfaces, and these concave surfaces are curved, then similarly, when designing the shape of the concave surfaces of the micro-unit 101, the aim is to minimize reflection of incident light upon reaching the concave surfaces. Instead, the light should be refracted upon reaching the concave surfaces, ensuring that the refracted light still enters the corresponding eye 200. An example can be found by referring to... Figure 8 , Figure 8 The figure shows a partial longitudinal cross-sectional view of a substrate for a myopia control lens provided in the third embodiment. Multiple recesses 103 are provided on one side of the substrate 100, and the surfaces of the recesses 103 are curved. These recesses 103 can be considered as small concave lenses. The curved shape of the concave surface also makes it less likely for light to be reflected when incident on it.

[0074] In some embodiments, the micro-unit 101 may be provided with at least one convex surface and at least one concave surface, wherein the convex surface is a curved surface and the concave surface is a curved surface. See, for example, [reference needed]. Figure 9 , Figure 9 The figure shows a top view of a micro-unit of a substrate for a myopia control lens provided in the fourth embodiment. The micro-unit 101 includes multiple protrusions 102 and multiple concave portions 103, which are arranged at intervals. The surface of the protrusions 102 is curved, and the concave surface of the concave portions 103 is curved. The protrusions 102 can be regarded as small convex lenses, and the concave portions 103 can be regarded as small concave lenses.

[0075] In this embodiment, the arrangement of the protrusions 102 and / or recesses 103 included in the micro-unit 101 is not limited. The protrusions 102 and / or recesses 103 can be uniformly arranged, non-uniformly arranged, or arranged in a predetermined array. In practical applications, the design can be tailored to specific requirements. For example, the protrusions 102 and / or recesses 103 can be arranged in a rectangular array or a circular array. Figure 9 The convex portions 102 and concave portions 103 shown are arranged at intervals in a rectangular array. See also, for an example, [reference needed]. Figure 10 , Figure 10 The fifth embodiment provides a micro-unit top view of the substrate of a myopia control lens, in which small convex lenses formed by each convex part 102 are evenly arranged to form a circular array.

[0076] In some embodiments, the microunit 101 is provided with at least one columnar protrusion 104, the surface of which is provided with a convex surface and / or a concave surface. In this embodiment, the shape of the columnar protrusion 104 is not limited, as long as incident light can be refracted by the convex surface and / or concave surface of the columnar protrusion 104 on the substrate 100, and then its propagation direction diverges. The refracted light then enters the corresponding eye 200 and is incident at different positions within the corresponding eye 200, without participating in imaging. The microunit 101 may include one columnar protrusion 104, or the microunit 101 may be provided with multiple columnar protrusions 104. For example, see [reference needed]. Figure 11 , Figure 11 A partial longitudinal cross-sectional view of the substrate of a myopia control lens provided in the sixth embodiment is shown in the figure, where a columnar protrusion 104 serves as a micro-unit. Exemplary examples can be found by referring to... Figure 12 , Figure 12 This is a schematic diagram of light propagation in a myopia control lens as provided in one embodiment, where light is incident on a columnar convex portion of the substrate. The lines with arrows in the figure indicate the direction of light propagation. As shown, the surface of the columnar convex portion 104 is provided with convex and concave surfaces. After light is refracted on the convex and concave surfaces of the columnar convex portion 104, it becomes divergent, so that the light refracted at different positions on the convex and concave surfaces of the columnar convex portion 104 is incident on different positions in the corresponding eye 200.

[0077] In some embodiments, the microunit 101 is provided with at least one columnar protrusion 104 and at least one curved protrusion or curved concave portion. The surface of the columnar protrusion 104 is provided with a convex surface and / or a concave surface, the surface of the curved protrusion is curved, and the surface of the curved concave portion is curved. A curved protrusion refers to a protrusion with a curved surface, which can be a protrusion with a continuously curved surface, and such a curved protrusion can be a small convex lens. A curved concave portion refers to a concave portion with a curved surface, which can be a concave portion with a continuously curved surface, and such a curved concave portion can be a small concave lens. The convex surface and / or concave surface of the columnar protrusion 104 can be curved. In some embodiments, the microunit 101 may be provided with at least one columnar protrusion 104, at least one curved protrusion, and at least one curved concave portion, the surface of the columnar protrusion 104 is provided with a convex surface and / or a concave surface, the surface of the curved protrusion is curved, and the surface of the curved concave portion is curved.

[0078] In some embodiments, the refractive power of microunit 101 is greater than or equal to +10D, or less than or equal to -10D. When the refractive power of microunit 101 is greater than or equal to +10D or less than or equal to -10D, the refractive power of microunit 101 is relatively large. In this case, when incident light passes through microunit 101 of substrate 100 and further enters the corresponding eye 200, most of the light passing through the same microunit 101 will be incident at different positions in the corresponding eye 200, reducing the imaging light involved in imaging. This causes more of the incident light after passing through microunit 101 of substrate 100 to become ambient light providing light perception. Therefore, the proportion of ambient light entering the corresponding eye 200 increases, and the proportion of imaging light decreases. Based on this, the lens can play a certain role in preventing the occurrence and development of myopia. In this embodiment, microunit 101 may be provided with a single convex surface or a single concave surface so that the refractive power of microunit 101 meets the corresponding conditions.

[0079] In some embodiments, the maximum length of the cross-section of the micro-unit 101 is greater than or equal to 10 micrometers and less than or equal to 300 micrometers. Since the light passing through the micro-unit 101 does not need to participate in imaging, the area of ​​a single micro-unit 101 can be small. The cross-sectional dimensions of the micro-unit 101 satisfy this condition, resulting in a smaller size and area. This reduces visual jumps, distortions, image blurring, and surge effects when using the lens, leading to clearer and more complete imaging and ensuring good visual effects. In some embodiments, the maximum length of the cross-section of the micro-unit 101 can specifically be greater than or equal to 100 micrometers and less than or equal to 300 micrometers. If the cross-section of the micro-unit 101 is circular, the maximum length of the cross-section refers to its diameter; if the cross-section of the micro-unit 101 is rectangular, the maximum length of the cross-section is the length of its diagonal.

[0080] In some embodiments, the maximum cross-sectional diameter of a single convex surface and / or a single concave surface of the micro-unit 101 is greater than or equal to 10 micrometers and less than or equal to 50 micrometers. If the micro-unit 101 is provided with a convex surface, the height of the convex surface is greater than or equal to 3 micrometers and less than or equal to 10 micrometers. If the micro-unit 101 is provided with a concave surface, the depth of the concave surface is greater than or equal to 3 micrometers and less than or equal to 10 micrometers.

[0081] In a specific instance, corresponding Figure 9 The micro-unit 101 shown has convex portions 102 and concave portions 103 arranged in a rectangular array with intervals. Each micro-unit 101 can be considered to consist of 25 small lenses, including small convex lenses and small concave lenses, forming one micro-unit 101. The side length of the micro-unit 101 is 150 micrometers. The diameter of a single small convex lens is 30 micrometers, and its height is 5-7 micrometers. The diameter of a single small concave lens is also 30 micrometers, and its height is 5-7 micrometers.

[0082] In some embodiments, there is a gap between adjacent micro-units 101 on the substrate 100, that is, the micro-units 101 are arranged at intervals on the substrate 100. This allows some light to enter the area between the micro-units 101 on the substrate 100 when incident light reaches the lens. After passing through the substrate 100, this light enters the corresponding eye 200, and this portion of light is the imaging light, capable of forming an image within the corresponding eye 200. This arrangement ensures that the micro-units 101 and the area providing the imaging light are dispersed, avoiding the aggregation of micro-units 101. This helps the lens provide better visual quality while preventing the occurrence and development of myopia. In some embodiments, there is a gap between adjacent micro-units 101 within the same ring, and a gap between micro-units 101 in different rings, as can be referred to... Figure 1 As shown. This arrangement allows the micro-units 101 and the area providing imaging light to be distributed dispersedly, avoiding the aggregation of micro-units 101. This helps the lens provide better visual quality while controlling the occurrence and development of myopia. In some embodiments, micro-units 101 belonging to the same ring are evenly arranged along the ring. This ensures that the light emitted from micro-units 101 at different positions on the circumference of the substrate 100 is uniform after light refraction, resulting in better lens imaging quality or visual effect. In some embodiments, the spacing between micro-units 101 in different rings is consistent. This ensures that the micro-units 101 are evenly arranged on the substrate 100, resulting in better lens imaging quality or visual effect. If the distribution is uneven, it is easy for micro-units 101 to be concentrated in a certain area, even exceeding 50%, which can cause blurred vision or visual deprivation, failing to achieve the ideal myopia control effect.

[0083] In some embodiments, the ratio of the total area occupied by the micro-units 101 on the substrate 100 to the total area of ​​the substrate 100 is greater than or equal to 5% and less than or equal to 45%. Meeting this condition results in a smaller total area occupied by the micro-units 101, reducing visual jumps, distortions, image blurring, and surge effects when using the lens, leading to clearer and more complete imaging and ensuring good visual performance. In one specific example, the ratio of the total area occupied by the micro-units 101 on the substrate 100 to the total area of ​​the substrate 100 is 30%.

[0084] The micro-unit 101 can be formed directly on one side surface of the substrate 100, or it can be attached to one side surface of the substrate 100. For example, the film is provided with micro-units 101 and the film is attached to the substrate 100. The micro-unit 101 uses a transparent material to ensure that light enters the corresponding eye 200 after being refracted by the micro-unit 101.

[0085] In some embodiments, the micro-unit 101 is provided on the surface of the substrate 100 closest to the corresponding eye 200, which makes the lens appearance relatively aesthetically pleasing and easier to clean. In some embodiments, the micro-unit 101 may also be provided on the surface of the substrate 100 furthest from the corresponding eye 200.

[0086] In some embodiments, the refractive power of the substrate 100 is greater than 0D or less than 0D, such that incident light incident on areas of the substrate 100 other than the micro-unit 101 will produce myopic defocus or hyperopic defocus when it passes through the substrate 100 and enters the corresponding eye 200 for imaging, thereby correcting the vision of the corresponding eye 200. In some embodiments, the substrate 100 is provided with a central area 105, and micro-units 101 are provided in areas of the substrate 100 other than the central area 105, as can be referred to... Figure 1 As shown, no micro-units 101 are provided in the central region 105 of the substrate 100, which helps the lens to better correct the vision of the corresponding eye 200. In some embodiments, the substrate 100 is provided with a central region 105 and a micro-unit region, the micro-unit region surrounding the outer periphery of the central region 105, and micro-units 101 are provided in the micro-unit region of the substrate 100.

[0087] The myopia control lens of this embodiment can be called a high-resolution lens. The micro-units set in the lens only increase the light perception through the light passing through the micro-units, without participating in the image formation, so they do not cause a decrease in visual quality. Since they do not need to participate in the image formation, the individual area of ​​the micro-units can be significantly reduced compared to multi-point defocus lenses. The total area occupied by the micro-units and the proportion of the lens area occupied by them can be much smaller than the small convex lenses on multi-point defocus lenses. Therefore, this high-resolution lens can provide good visual quality.

[0088] Existing myopia management lenses used to control myopia progression and axial elongation are multi-point defocus lenses, which have the following disadvantages:

[0089] (1) Multi-point defocus lenses have multiple positive diopter convex lenses set in the peripheral defocus area. These convex lenses will cause obvious distortion of the image of the surrounding scene. When the line of sight moves, especially when viewing objects through the peripheral defocus area, there is a noticeable surging effect, and the distortion is more obvious. This reduces the user's visual clarity, resulting in a poor user experience. It requires an adaptation time, and there are also cases where the user cannot adapt.

[0090] (2) When wearing the glasses, the line of sight should pass through the central optical zone. However, in actual use, due to the instability or displacement of the frame, there are many cases where the line of sight passes through the defocus zone, resulting in poor control. At the same time, the pupil height needs to be accurately determined and processed during fitting, otherwise it will also result in poor control.

[0091] (3) In order for the convex lenses in the peripheral defocus area of ​​a multi-point defocus lens to participate in imaging, the refractive power needs to be consistent. After the light passes through these lenses, a focusing effect will occur. If we look at multi-point defocus lenses according to the high lens power theory, these lenses cause less change in the direction of the light passing through them, so the proportion of reduced imaging light is small. From this perspective, the efficiency of myopia control is not high.

[0092] (4) Insufficient wearing time. Multi-point defocus lenses require 12 hours of wear per day. However, due to the deformation and surging effect in the peripheral defocus area, visual discomfort can easily occur. In actual use, children often only wear them when they cannot see clearly, resulting in an actual usage time of far less than 12 hours and poor control effect.

[0093] (5) It affects children's visual development. Requiring children to look outward from the central optical zone will inevitably change their eye movement habits, limit their field of vision, and affect their visual development.

[0094] (6) Increased astigmatism. Children with astigmatism of 50 degrees or more who wear these lenses often experience an increase in astigmatism after one year. This is because the design of multi-point defocus lenses increases deformation on the astigmatic axis, leading to an increase in the child's astigmatism.

[0095] (7) Wearing by specific groups. During the fitting of multi-point defocus lenses, it is necessary to screen children with heterophoria or visual function. These children are not suitable for wearing multi-point defocus lenses.

[0096] Existing myopia management lenses used to control myopia progression and axial elongation include contrast lenses. Contrast lenses are designed based on contrast theory, which represents the difference in contrast between different colors and brightness within the same visual field in visual perception. Contrast theory divides the environment into natural and modern living environments; natural environments have lower contrast, while modern living environments have higher contrast. Contrast theory posits that in modern visual environments, unnatural contrast significantly impacts the human visual system, leading to the rapid development of myopia. Therefore, reducing contrast can effectively control the occurrence and progression of myopia.

[0097] However, the contrast theory has the following drawbacks: According to the theory, lower contrast in relatively dark environments may help with myopia control, but this contradicts the common sense that eyes need to be used in relatively bright environments. Furthermore, high-contrast lenses have multiple scattering centers on the lens, causing significant reflection of light as it passes through, greatly reducing light transmittance and thus lowering contrast, which also contradicts the desire for lenses with good light transmittance. From the perspective of high-contrast lens theory, the frosted glass-like dots on high-contrast lenses cause significant scattering of light as it passes through, reducing light transmittance. While slightly reducing the proportion of image light, this results in a decrease in the total amount of light entering the eye.

[0098] The myopia control lens in this embodiment is designed based on the high-resolution theory, and has the following advantages:

[0099] 1. The lenses do not require a central optical zone for vision, making them suitable for a wider range of people.

[0100] ① When using high-resolution lenses, a clear field of vision and visual effect can still be obtained by viewing objects through the high-resolution area. Therefore, there is no need to restrict the user to view objects through the central optical zone. It does not restrict the user's eye movement or field of vision, making it more suitable for children and teenagers with myopia control needs.

[0101] ② Because high-resolution glasses have no side effects, they can be used for myopia prevention. For patients with insufficient hyperopic reserve or pseudomyopia, they can effectively delay or prevent the onset of myopia and control abnormal axial elongation. This can effectively reduce the myopia rate.

[0102] ③ For myopic patients with astigmatism, using high-resolution glasses can effectively control the increase in myopia and axial length without exacerbating the increase in astigmatism.

[0103] ④ For patients with visual function and latent strabismus, using high-resolution glasses will not aggravate their visual function or strabismus problems.

[0104] 2. High-resolution glasses are more adaptable.

[0105] ① High-contrast glasses result in minimal light loss to the retina, significantly increasing the proportion of light that does not participate in image formation and reducing the proportion of light used for imaging compared to high-contrast glasses. Therefore, there is no need to increase ambient illuminance or brightness, making them more adaptable to different environments.

[0106] ② Users experience high visual quality when using high-resolution glasses, so they don't only need to use them when their vision is blurry; this effectively extends usage time, thus achieving the desired effect.

[0107] 3. High-resolution glasses have better myopia control and axial elongation control effects.

[0108] ① Compared to multi-point defocus lenses, high-resolution lenses have smaller micro-units that provide the same amount of disturbed light (the proportion of light that does not participate in imaging), resulting in fewer side effects and significantly higher efficiency and better control.

[0109] ② Compared to multi-scattering center lenses based on contrast theory, where a large proportion of light is reflected from the scattering center, reducing the amount of light entering the retina; high-resolution lenses, on the other hand, have micro-units with a light transmittance between 85% and 99% (determined by the lens material and the curvature of the micro-units), resulting in minimal reduction in light entering the retina and significantly increasing the proportion of light that does not participate in image formation. Even according to contrast theory, high-resolution lenses are more efficient and effective at reducing contrast; therefore, they are more effective at controlling myopia.

[0110] ③ In actual design, the micro-units of the high-resolution glasses adopt a multi-curved surface design, which actually forms an alternating pattern of convex and concave lenses, greatly increasing the refraction and scattering of light, efficiently increasing ambient light, and reducing the proportion of imaging light, thereby achieving the effect of effectively controlling myopia growth and axial elongation.

[0111] The foregoing has provided a detailed description of a myopia control lens according to this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A myopia control ophthalmic lens for placement in front of a corresponding eye, characterized in that, Includes a substrate, wherein the substrate is provided with a plurality of micro-units, the plurality of micro-units being arranged in a ring array with the center of the substrate as the center, and the micro-units belonging to the same ring being equidistant from the center of the substrate; The micro-unit is provided with a convex surface and / or a concave surface, such that when incident light is incident on the substrate, the light incident on the micro-unit is refracted by the convex surface and / or the concave surface of the micro-unit and then its propagation direction is diverged. The refracted light further enters the corresponding eye, so that when the light refracted at different positions of the same micro-unit enters the corresponding eye, it is incident at different positions in the corresponding eye; the micro-unit is provided with multiple convex surfaces, or the micro-unit is provided with multiple concave surfaces, or the micro-unit is provided with at least one convex surface and at least one concave surface.

2. The myopia control lens of claim 1, wherein The convex surface is a curved surface and / or the concave surface is a curved surface.

3. The myopia control lens of claim 1, wherein, If the micro-unit is provided with at least one convex surface and at least one concave surface, the at least one convex surface and the at least one concave surface form a continuous curved surface.

4. The myopia control lens according to claim 1, characterized in that, The micro-unit is provided with at least one columnar protrusion, and the surface of the columnar protrusion is provided with a convex surface and / or a concave surface.

5. The myopia control lens according to claim 1, characterized in that, The micro-unit is provided with at least one columnar protrusion and at least one curved protrusion / curved concave portion. The surface of the columnar protrusion is provided with a convex surface and / or a concave surface. The surface of the curved protrusion is curved, and the surface of the curved concave portion is curved.

6. The myopia control lens according to claim 1, characterized in that, The micro-unit has a refractive power greater than or equal to +10D, or the micro-unit has a refractive power less than or equal to -10D.

7. The myopia control lens according to any one of claims 1 to 6, characterized in that, The micro-units belonging to the same ring are spaced apart from each other, and the micro-units belonging to different rings are spaced apart from each other.

8. The myopia control lens according to claim 7, characterized in that, The micro-units belonging to the same ring are evenly arranged along the ring.

9. The myopia control lens according to any one of claims 1 to 6, characterized in that, The ratio of the total area occupied by the micro-units on the substrate to the total area of ​​the substrate is greater than or equal to 5% and less than or equal to 45%.

10. The myopia control lens according to any one of claims 1 to 6, characterized in that, The maximum length of the cross-section of the micro-unit is greater than or equal to 10 micrometers and less than or equal to 300 micrometers.

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