Myopia prevention and control lens

Abstract

A myopia prevention and control lens, which is placed in front of a corresponding eye and comprises a substrate (100). The substrate (100) is provided with a plurality of micro-units (101), and the micro-units (101) are provided with convex surfaces and / or concave surfaces, so that when incident light is incident on the substrate (100), the light incident on the micro-units (101) is refracted by the convex surfaces and / or concave surfaces of the micro-units (101), and then diverges in the propagation direction, and the light refracted by different positions of the same micro-unit (101) is incident on different positions in the corresponding eye (200) when entering the corresponding eye. The myopia prevention and control lens increases the proportion of ambient light entering the corresponding eye (200), reduces the proportion of imaging light entering the corresponding eye (200), and can play the role of preventing and controlling occurrence and development of myopia. Moreover, light which is incident on the micro-units (101) of the lens, is refracted and then enters the corresponding eye (200) does not participate in imaging, so that visual distortion, jump and sway effects can be reduced.

Description

A type of myopia control lens

[0001] This application claims priority to Chinese Patent Application No. 202411427222.1, filed on October 14, 2024, entitled "A Myopia Control Lens", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of ophthalmic products, and in particular to a myopia control lens. Background Technology

[0003] 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.

[0004] 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. Summary of the Invention

[0005] 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.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A myopia control lens, for placement in front of a corresponding eye, includes a substrate having multiple micro-units. Each micro-unit has a convex and / or concave surface, such that when incident light is incident on the substrate, the light incident on the micro-unit is refracted by the convex and / or concave surface of the micro-unit and then its propagation direction diverges. The refracted light further enters the corresponding eye, so that when light refracted at different positions of the same micro-unit enters the corresponding eye, it is incident at different positions within the corresponding eye.

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

[0009] In some embodiments, the micro-unit is provided with convex and concave surfaces forming a continuous curved surface.

[0010] In some embodiments, the micro-unit is provided with multiple convex surfaces, which are curved surfaces;

[0011] Alternatively, the micro-unit may have multiple concave surfaces, which are curved surfaces;

[0012] Alternatively, the micro-unit may have 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] In some embodiments, the ratio of the total area occupied by the microcells on the substrate to the total area of ​​the substrate is greater than or equal to 5% and less than or equal to 45%.

[0017] 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.

[0018] In some embodiments, there is a gap between adjacent microcells on the substrate.

[0019] As can be seen from the above technical solution, the myopia control lens provided by the present invention is used to be placed in front of the corresponding eye. It includes a substrate, and the substrate is provided with a plurality of micro-units. The micro-units are provided with convex and / or concave surfaces, so that when incident light is incident on the substrate, the light incident on the micro-units is refracted by the convex and / or concave surfaces of the micro-units and then the 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 on different positions in the corresponding eye.

[0020] 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 with multi-point defocus lenses, in the myopia control lens of this invention, the light incident on the micro-units of the lens is refracted by the micro-units and enters the corresponding eye without participating in image formation, thereby reducing visual distortion, jump, and surge effects. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 is a top view of a myopia control lens provided in an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of light propagation when the object light passes through a normal lens and enters the corresponding eye;

[0024] Figure 3 is 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 then enters the corresponding eye according to an embodiment of the present invention.

[0025] Figure 4 is a schematic diagram of light propagation when incident light from a myopia control lens is incident on a micro-unit of the substrate and enters the corresponding eye, according to an embodiment of the present invention.

[0026] Figure 5 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;

[0027] Figure 6 is a partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the first embodiment of the present invention;

[0028] Figure 7 is a partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the second embodiment of the present invention;

[0029] Figure 8 is a partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the third embodiment of the present invention;

[0030] Figure 9 is a top view of the micro-unit of the substrate of a myopia control lens provided in the fourth embodiment of the present invention;

[0031] Figure 10 is a top view of the micro-unit of the substrate of a myopia control lens provided in the fifth embodiment of the present invention;

[0032] Figure 11 is a partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the sixth embodiment of the present invention;

[0033] Figure 12 is a schematic diagram of light propagation in a myopia control lens provided in an embodiment of the present invention, where light is incident on the columnar convex part of the substrate.

[0034] The reference numerals in the accompanying drawings include: 100-substrate, 101-micro unit, 102-convex part, 103-concave part, 104-columnar convex part, 200-corresponding eye, 201-object, 202-normal lens. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0036] 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:

[0037] (I) The classification of light entering the eye by the high-angle light theory.

[0038] 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.

[0039] (II) Specific exposition of Gao Jingguang's theory.

[0040] The theory of high-level illumination consists of the following three principles:

[0041] 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.

[0042] 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.

[0043] 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.

[0044] (III) Theoretical Evidence:

[0045] 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.

[0046] The above animal experiments show that:

[0047] 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-ambient-light theory.

[0048] 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.

[0049] Other evidence derived from common sense:

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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-lens theory.

[0056] 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.

[0057] 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.

[0058] This embodiment provides a myopia control lens for placement in front of a corresponding eye. It includes a substrate with multiple micro-units, each having a convex or / and concave surface. When incident light is incident on the substrate, the light is refracted by the convex or / and concave surfaces of the micro-units, causing its propagation direction to diverge. The refracted light then enters the corresponding eye, allowing light refracted at different positions within the same micro-unit to reach different locations within the corresponding eye.

[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-units 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] 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.

[0063] For example, refer to FIG1, which is a top view of a myopia control lens provided in an embodiment. As shown in FIG1, a plurality of micro-units 101 are provided on the substrate 100. When incident light is incident on the substrate 100, some light is incident on the micro-units 101 of the substrate 100, and some light is incident on the area of ​​the substrate 100 other than the micro-units 101.

[0064] For example, refer to Figure 2, which is a schematic diagram of light propagation when object light passes through a normal lens and enters the corresponding eye. The normal lens shown in Figure 2 is a concave lens. As shown, the light from object 201 passes through normal lens 202 and enters the corresponding eye 200, forming an image on the retina of the corresponding eye 200.

[0065] When incident light is incident on this lens, the light incident on areas other than the micro-units 101 of the substrate 100 can be imaged within the corresponding eye 200 after passing through the substrate 100. This portion of light becomes the imaging light. Further, refer to Figures 3, 4, and 5. Figure 3 is a schematic diagram of light propagation when incident light from a myopia control lens is incident on areas other than the micro-units of the substrate and enters the corresponding eye, according to an embodiment. The substrate 100 of the myopia control lens shown in Figure 3 is a concave lens. The light incident on areas other than the micro-units 101 of the substrate 100, such as the 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.

[0066] Figure 4 is a schematic diagram of light propagation when incident light from a myopia control lens is incident on a micro-unit of the substrate and enters the corresponding eye. 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. Lights with different propagation directions enter the corresponding eye 200 at different positions and cannot be focused to form an image.

[0067] Figure 5 is a schematic diagram of light propagation when an object light is incident on a myopia control lens according to an embodiment and enters the corresponding eye. 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 image formed when light incident on the substrate 100 at that position is not present, after passing through the substrate 100 and entering the corresponding eye 200.

[0068] Therefore, as shown in Figures 3, 4, and 5, it can be understood that 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 decreases the proportion of imaging light entering the corresponding eye 200. Based on the first principle of the high-ambient-light theory, it can play a role in preventing the occurrence and development of myopia.

[0069] 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.

[0070] 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. Referring to FIG6, which is a partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the first embodiment, as shown, a micro-unit 101 is provided on one side surface of the substrate 100, and the micro-unit 101 is provided with convex and concave surfaces forming a continuous curved surface, the surface of the micro-unit 101 being a curved surface with varying concavity and convexity.

[0071] In some embodiments, the micro-unit 101 is provided with multiple convex surfaces, which are curved surfaces. When designing the shape of the convex surface of the micro-unit 101, the aim is to minimize reflection of incident light when it strikes the convex surface, and to maximize refraction of light upon impact. If light is reflected at the convex surface of the micro-unit 101, the reflected light is unlikely to enter the corresponding eye 200, reducing the amount of light entering the eye 200, which is detrimental to myopia control and also reduces visual quality. If the convex surface includes a plane, the plane is more prone to light reflection; therefore, in this embodiment, the convex surface is curved. Referring exemplarily to Figure 7, which is a partial longitudinal cross-sectional view of a myopia control lens substrate provided in 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.

[0072] In some embodiments, the micro-unit 101 is provided with multiple concave surfaces, which are curved. Similarly, when designing the shape of the concave surface of the micro-unit 101, the aim is to minimize reflection of incident light when it hits the concave surface, and to refract the light as much as possible so that the refracted light still enters the corresponding eye 200. Referring to FIG8, which is a partial longitudinal cross-sectional schematic diagram of a myopia control lens substrate 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 it hits the concave surface.

[0073] 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 curved and the concave surface is curved. Referring exemplarily to FIG9, which is a top view of a micro-unit of a substrate for a myopia control lens according to a fourth embodiment, as shown, the micro-unit 101 includes multiple convex portions 102 and multiple concave portions 103, which are arranged at intervals. The surfaces of the convex portions 102 are curved, and the concave surfaces of the concave portions 103 are curved.

[0074] 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 set array. In practical applications, the design can be customized according to requirements. In the exemplary map 9, the protrusions 102 and recesses 103 are arranged alternately in a rectangular array. For an exemplary reference, see Figure 10, which is a top view of the micro-units of a myopia control lens substrate provided in the fifth embodiment. The small convex lenses formed by the protrusions 102 are uniformly arranged to form a circular array.

[0075] In some embodiments, the microunit 101 is provided with at least one columnar protrusion 104, and the surface of the columnar protrusion 104 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 the incident light can be incident on the columnar protrusion 104 of the substrate 100, and after being refracted by its convex surface and / or concave surface, the propagation direction is diverged, and the refracted light enters the corresponding eye 200 and is incident on different positions in 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, refer to FIG11, which is a partial longitudinal cross-sectional schematic diagram of the substrate of a myopia control lens provided in the sixth embodiment, as shown in the figure, a columnar protrusion 104 is a microunit. Referring to Figure 12, which is a schematic diagram of light propagation in a myopia control lens provided in an embodiment, where light is incident on a columnar protrusion of the substrate. The lines with arrows in the figure indicate the direction of light propagation. As shown in the figure, the surface of the columnar protrusion 104 is provided with a convex surface and a concave surface. After the light is refracted on the convex and concave surfaces of the columnar protrusion 104, it becomes divergent, so that the light refracted at different positions on the convex and concave surfaces of the columnar protrusion 104 is incident on different positions in the corresponding eye 200 when it enters the corresponding eye 200.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] In a specific example, corresponding to the microunit 101 shown in Figure 9, the convex portions 102 and concave portions 103 are arranged at intervals in a rectangular array. It can be considered that a single microunit 101 comprises 25 small lenses, including small convex lenses and small concave lenses, forming one microunit 101. The side length of the microunit 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 30 micrometers, and its height is 5-7 micrometers.

[0081] 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 this lens, leading to clearer and more complete imaging and ensuring good visual performance.

[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 and helping the lens to provide better visual quality while preventing the occurrence and development of myopia. In some embodiments, the micro-units 101 are evenly arranged on the substrate 100.

[0083] 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.

[0084] 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.

[0085] In some embodiments, the refractive power of the substrate 100 is greater than 0D or less than 0D, such that 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 has a central area, and micro-units 101 are provided in areas of the substrate 100 other than the central area. Referring to Figure 1, no micro-units 101 are provided in the central area of ​​the substrate 100, which helps the lens to better correct the vision of the corresponding eye 200.

[0086] 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.

[0087] Existing myopia management lenses used to control myopia progression and axial elongation are multi-point defocus lenses, which have the following disadvantages:

[0088] (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 peripheral 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 becomes more and 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.

[0089] (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.

[0090] (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, and the light will be focused after passing through these lenses. If we look at multi-point defocus lenses according to the high lens power theory, these lenses cause less change in the direction of light passing through them, so the proportion of reduced imaging light is small. From this perspective, the efficiency of myopia control is not high.

[0091] (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.

[0092] (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.

[0093] (6) Increased astigmatism. Most children with astigmatism of 50 degrees or more who wear these lenses experience an increase in astigmatism after one year. This is because the design of multi-point defocusing lenses increases deformation on the astigmatic axis, leading to an increase in the child's astigmatism.

[0094] (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.

[0095] 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.

[0096] 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.

[0097] The myopia control lens in this embodiment is designed based on the high-resolution theory, and has the following advantages:

[0098] 1. The lenses do not require a central optical zone for vision, making them suitable for a wider range of people.

[0099] 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 and field of vision, making it more suitable for children and teenagers with myopia control needs.

[0100] 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.

[0101] 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.

[0102] ④ For patients with visual function and latent strabismus, using high-resolution glasses will not aggravate their visual function or strabismus problems.

[0103] 2. High-resolution glasses are more adaptable.

[0104] 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.

[0105] 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.

[0106] 3. High-resolution glasses have better myopia control and axial elongation control effects.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] The foregoing has provided a detailed description of a myopia control lens provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A myopia control ophthalmic lens for placement in front of a corresponding eye, characterized in that, The device includes a substrate having multiple micro-units. Each micro-unit has 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.

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, The micro-unit is provided with convex and concave surfaces that form a continuous curved surface.

4. The myopia control lens of claim 1, wherein, The micro-unit is provided with multiple convex surfaces, and the convex surfaces are curved surfaces; Alternatively, the micro-unit may have multiple concave surfaces, which are curved surfaces; Alternatively, the micro-unit may have 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.

5. The myopia control lens of claim 1, wherein, 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.

6. The myopia control lens of claim 1, wherein, 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.

7. The myopia control lens of claim 1, wherein, 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.

8. The myopia control lens of any of claims 1-7, wherein, 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%.

9. The myopia control lens of any one of claims 1 to 7, wherein, 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.

10. The myopia control lens of any one of claims 1 to 7, wherein, There are gaps between adjacent micro-units on the substrate.

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