A spectacle lens for regulating the growth trend of the eye axis of adolescents

Abstract

The present invention provides a spectacle lens for regulating the axial growth of adolescents' eyes. The spectacle lens comprises a first refractive area providing a first diopter for correcting refractive errors; and a second refractive area focusing light on a location other than the retina and providing one or more second diopters different from the first diopter. The second refractive area is provided with a plurality of interconnected microlenses. The spectacle lens can effectively regulate the axial growth of adolescents' eyes, thereby inhibiting the progression of refractive errors.

Description

Technical Field

[0001] The present invention relates to the technical field of resin lenses, in particular to a spectacle lens for regulating the growth trend of eye axes of teenagers. Background Art

[0002] Myopia is a global social and medical problem. The prevalence of myopia among Chinese adolescents is increasing annually, with younger onset and higher degrees of myopia. The onset and progression of myopia in adolescents is primarily due to hyperopic defocus in the peripheral retina. Currently, effective myopia correction methods include medication, spectacles, contact lenses, and excimer laser corneal refractive surgery.

[0003] Judging from current market feedback, framed glasses remain the primary correction method for the vast majority of myopic individuals and the preferred method for controlling myopia progression. Peripheral defocus framed glasses are a relatively effective and gradually gaining acceptance among consumers. These lenses slow down axial elongation by reducing hyperopic defocus in the retinal periphery. Specifically, the myopia power of these lenses decreases gradually from top to bottom, allowing the wearer to use different powers for distant and close-up viewing, thereby relaxing and adjusting the eyes. Wearing ordinary framed glasses (single-vision lenses) can cause hyperopic defocus in the periphery of the retina, meaning the peripheral focus falls behind the retina. Peripheral defocus lenses can convert this hyperopic defocus in the periphery of the retina into myopic defocus, thereby inhibiting axial elongation and controlling the power of the lens.

[0004] Through patent search, it is found that there are patents on peripheral defocus lenses, such as:

[0005] Patent document CN102472899A provides a contact lens for slowing the progression of myopia or hyperopia in a human patient. The contact lens has two or more refractive powers, wherein a first refractive power provides the human patient with clear visual acuity, and a second refractive power provides the human patient with a defocused retinal image. Patent document CN111897141A provides a peripheral defocus lens and frame glasses. The peripheral defocus lens includes a central optical zone, an annular defocus zone disposed outside the central optical zone, and the defocus amount of the defocus zone varies in the annular direction. The eyeglass lens proposed in patent document CN113272720A includes: a first area, which allows light incident on the object side of the lens to be emitted from the side of the eyeball of the lens and converge at a predetermined position A on the wearer's retina; a plurality of second areas, which are configured to converge the light at position B on the object side or at position C on the far side relative to position A, if the second area converges the light at position B, then the refractive error in the meridian direction and the refractive error in the sagittal direction have values ​​that cause the light to converge in a direction extending from near position A toward position B, or if the second area converges the light at position C, then the refractive error in the meridian direction and the refractive error in the sagittal direction have values ​​that cause the light to converge in a direction extending from near position A toward position C, wherein the peripheral area is a radius range of 4.5 mm to 25 mm from the center of the lens. Patent document CN113741060A provides a peripheral myopic defocus lens, characterized in that a peripheral imaging interference zone is provided on the periphery of the central optical zone, and an imaging interference portion and a transparent gap portion located between different parts of the imaging interference portion are formed in the peripheral imaging interference zone.

[0006] The above-mentioned defocus lenses use R-value changes or micro-lens designs to achieve defocus. When using R-value changes to achieve defocus, in order to obtain clear vision in the central area, the defocus amount design of the peripheral area is often limited, making it difficult to achieve the effect of inhibiting eye axis growth. When using a micro-lens design to achieve defocus, the refractive power of the micro-lens can be increased by 2.00-8.00D compared to the refractive power on the surface, thereby solving the defects of the peripheral defocus design. However, due to the large difference between the refractive power on the surface and the refractive power of the micro-lens, image jumps are prone to occur, causing the wearer to experience dizziness and other discomfort.

[0007] Therefore, there is an urgent need for a peripheral defocus lens that can overcome the above shortcomings. Summary of the Invention

[0008] The present invention overcomes the defects of existing peripheral defocus lenses and provides a spectacle lens that is comfortable to wear and can effectively regulate the growth trend of the eye axis of teenagers.

[0009] In order to achieve the above-mentioned object of the invention, the technical solution provided by the present invention is as follows:

[0010] A spectacle lens for regulating the axial growth trend of adolescents, characterized by comprising a first refractive area for providing a first refractive power required for correcting vision; a second refractive area for focusing light on a position other than the retina and providing one or more second refractive powers different from the first refractive power; wherein the second refractive area is provided with a plurality of microlenses connected to each other.

[0011] In the present invention, the microlens is connected to adjacent microlenses via connecting posts, connecting balls, or a combination of the two.

[0012] In the present invention, the refractive power of the microlens is different from the refractive power of the connecting pillar or connecting ball that connects the microlens, wherein the refractive power relationship between the microlens and the connecting pillar, connecting ball, or a combination of the two satisfies: , where a and b are constants, and x is the distance from the microlens to the center of the lens, in millimeters (mm).

[0013] In the present invention, the microlenses are arranged in a ring shape.

[0014] In the present invention, the microlenses located in different annular areas have different refractive powers, and the absolute value of the refractive power of the microlenses increases as the distance from the center of the lens increases.

[0015] In the present invention, the refractive power of the second refractive area is obtained by adding positive refractive power or negative refractive power to the first refractive power.

[0016] In the present invention, the difference between the refractive power of the second refractive area and the first refractive power is 1.00D to 9.00D.

[0017] In the present invention, the first refractive power is the refractive power of a spherical or aspherical lens.

[0018] In the present invention, the raw material of the eyeglass lens is a thermosetting resin, wherein the refractive index and Abbe number of the thermosetting resin meet at least one of the following conditions: (a) refractive index 1.67, Abbe number ≥ 30; (b) refractive index 1.60, Abbe number ≥ 40; (c) refractive index 1.56, Abbe number ≥ 38; (d) refractive index 1.50, Abbe number ≥ 56.

[0019] In the present invention, the raw material of the eyeglass lens is a thermoplastic resin, wherein the transmittance of the thermoplastic resin is not less than 90%.

[0020] According to the spectacle lenses of the present invention, the image jump problem between different refractive powers is solved by connecting microlenses with connecting balls or connecting columns. At the same time, the spectacle lenses can effectively regulate the growth trend of the eye axis of teenagers, thereby inhibiting the development of refractive errors of the eyes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments. Obviously, the drawings described below represent only some embodiments of the present invention. Those skilled in the art can apply the present invention to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structures and operations.

[0022] Figure 1 1 is a plan view and a partially enlarged view of a spectacle lens according to some embodiments of the present invention.

[0023] Figure 2 yes Figure 1 A cross-sectional view of the AA section of the spectacle lens shown.

[0024] Figure 3 are plan views of eyeglass lenses according to other embodiments of the present invention.

[0025] Figure 4 are plan views of eyeglass lenses according to other embodiments of the present invention. DETAILED DESCRIPTION

[0026] Hereinafter, the present invention will be described in detail based on exemplary embodiments, but the present invention is not limited to these embodiments. The present invention is embodied in various forms as follows, but should not be construed as being limited to the exemplary embodiments set forth herein. Therefore, the detailed description and embodiments of the present invention will convey the scope of the present invention to those of ordinary skill in the art and are to be construed as being within the scope of the present invention.

[0027] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0028] The spectacle lenses provided by the present invention have the function of regulating the axial growth trend of adolescents' eyes. In some embodiments, the front and back surfaces of the spectacle lenses are spherical or aspherical. A design with both front and back surfaces aspherical is preferred. This is because spherical lenses have optical performance defects at the edges, which can cause blurring when viewing objects obliquely from the edge when the eye is rotated. Aspherical lenses can effectively solve this problem, providing clearer overall vision. In addition, aspherical lenses can significantly increase the design variables of the lens surface, making lens optimization easier.

[0029] According to some embodiments of the present invention, the lens material used in the present eyeglass lenses is a resin material, such as a thermosetting resin or a thermoplastic resin. In some embodiments, the refractive index of the lens material is between 1.0 and 2.0, and the Abbe number is ≥20. Preferably, the refractive index and Abbe number of the thermosetting resin lens meet the following conditions: (a) refractive index 1.67, Abbe number ≥30; (b) refractive index 1.60, Abbe number ≥40; (c) refractive index 1.56, Abbe number ≥38; (d) refractive index 1.50, Abbe number ≥56. In some embodiments, the transmittance of the thermoplastic resin lens is ≥85%, preferably 95%, which can meet the requirements of myopic patients.

[0030] Figure 1 A plan view and a partially enlarged view of a spectacle lens 100 are shown. The spectacle lens 100 may include a first refractive area 110 and a second refractive area 120. The first refractive area 110 provides a first refractive power for correcting ametropia. The second refractive area 120 provides one or more second refractive powers different from the first refractive power. In some embodiments, the second refractive power is obtained by adding a positive or negative refractive power to the first refractive power. Preferably, the difference between the refractive power of the second refractive area and the first refractive power is 1.00D to 9.00D. In some embodiments, one surface of the spectacle lens 100 serves as a base layer, and the refractive power of the base layer is the first refractive power. A plurality of microlenses (e.g., microlens 130 in the partially enlarged view) are superimposed on the base layer. The area formed by the plurality of microlenses serves as the second refractive area 120, which has one or more second refractive powers different from the first refractive power. Preferably, the myopic defocus of the multiple microlenses can vary continuously along a specific direction, resulting in a continuous change in their diopter along the specific direction. For example, the diopter of the microlenses gradually increases from the center outward, thereby increasing the defocus design and regulating axial growth. In some embodiments, based on differences in diopter or position, the spectacle lens 100 may further include a third refractive area, a fourth refractive area, etc., which are not specifically limited in this specification.

[0031] In some embodiments, the microlenses can be set in any area of ​​the spectacle lens 100. Preferably, the microlenses are set outside the central area. For example, the central area has a diameter of 10 millimeters (mm), and no microlenses are set in this area, that is, this area only has the first refractive power. This can ensure that all light in the central main viewing area of ​​10 mm and some peripheral light fall well on the retina, thereby achieving clear vision correction; and the second refractive area where the microlenses are located focuses light on a position other than the retina, thereby regulating the growth of the eye axis. In some embodiments, multiple microlenses are set in a certain manner on the spectacle lens 100. Preferably, the multiple microlenses are arranged in a ring (for example, Figure 3 The microlenses in different annular areas have different refractive powers. For example, the refractive powers of the microlenses between the rings gradually increase from the center to the periphery according to a specific function (e.g., a direct proportional function, a quadratic function, an exponential function, a power function, etc.). This design can significantly improve the wearer's comfort. In addition, the arrangement of multiple microlenses can also be Figure 1 The hexagonal arrangement shown, Figure 4 The tapered thread arrangement shown, etc.

[0032] In some embodiments, each microlens can be a spherical microlens or a rod-shaped microlens. Preferably, the microlens has a height of 0.1 to 5 μm and a bottom diameter of 0.1 to 5 mm. In some embodiments, the rod-shaped microlens can be a Fresnel lens with a height of 0.01 to 5 μm.

[0033] The microlenses can be connected to adjacent microlenses by connecting posts, connecting balls or a combination of the two. Figure 2 As shown in A, multiple micro lenses 210 can be connected by connecting columns 220. Through such connections, there can be a transition between hyperopic defocus when wearing the lens, effectively improving wearing comfort and improving the effect of controlling hyperopia development. Figure 2 As shown in B, multiple microlenses 230 can be connected by connecting columns 240. Through such connections, there can be a transitional increase between myopic defocus when wearing the lens, which effectively improves the wearing comfort and improves the effect of controlling the development of myopia. In some embodiments, the microlenses can be connected to adjacent microlenses in multiple directions through connecting columns or connecting balls. For example, each microlens is connected to adjacent microlenses in six directions. In some embodiments, the connecting columns can be formed by opening a pipe between the microlenses, or they can be cylindrical microlenses, and the connecting balls can be spherical microlenses. In some embodiments, the refractive power of the microlenses is different from the refractive power of the connecting columns or connecting balls that connect the microlenses. Wherein, the refractive power relationship between the microlenses and the connecting columns, connecting balls or a combination of the two satisfies:

[0034] , where a and b are constants, and x is the distance from the microlens to the center of the lens, in millimeters (mm).

[0035] Examples 1-4 are specific examples of the manufacturing process of the eyeglass lenses of the present invention.

[0036] Example 1

[0037] Using lens raw materials with a refractive index of 1.50 and an Abbe number of 58, the lens raw materials are injected into a specific mold. After curing through a curing process, they undergo demoulding, edging, cleaning, hardening, coating and inspection processes to obtain the required semi-finished blank lenses.

[0038] Among them, the lens diameter is 80mm and the first diopter of the lens is -2.00D.

[0039] Microlenses are arranged in a circular ring with a diameter of 10-15mm outward from the center circle. The microlenses are connected by connecting balls. This area is the second refractive area. The refractive power of the second refractive area is the refractive power of the microlenses and the refractive power of the connecting balls between the microlenses. The refractive power of the microlenses is +3.50D, and the refractive power of the connecting balls connecting the microlenses is +1.00D.

[0040] Microlenses are arranged in a circular ring with a diameter of 15-20mm outward from the center circle. The microlenses are connected by connecting balls. This area is the third refractive area. The refractive power of the third refractive area is the refractive power of the microlenses and the refractive power of the connecting balls. The refractive power of the microlenses is +4.00D, and the refractive power of the connecting balls connecting the microlenses is +1.50D.

[0041] Microlenses are arranged in a circular ring with a diameter of 20-35mm outward from the center circle. The microlenses are connected by connecting balls. This area is the fourth refractive area. The refractive power of the fourth refractive area is the refractive power of the microlenses and the refractive power of the connecting balls. The refractive power of the microlenses is +4.50D, and the refractive power of the connecting balls connecting the microlenses is +2.00D.

[0042] Therefore, the first refractive zone is the area excluding the second, third, and fourth refractive zones. Because the lens solves the image jump problem between different refractive powers while ensuring the defocus amount, it can reduce the growth trend of the eye axis in adolescents, thereby inhibiting the rapid development of myopia in adolescents.

[0043] Example 2

[0044] Using lens raw materials with a refractive index of 1.67 and an Abbe number of 30, the lens raw materials are injected into a specific mold. After curing through a curing process, they undergo demoulding, edging, cleaning, hardening, coating and inspection processes to obtain the required semi-finished blank lenses.

[0045] Among them, the lens diameter is 80mm and the first diopter of the lens is -8.00D.

[0046] Microlenses are arranged in a ring with a diameter of 10-15mm outward from the center ring. Connecting spheres connect the microlenses, forming the second refractive zone. The diopter of the second refractive zone is the sum of the diopter of the microlenses and the diopter of the connecting spheres. The diopter of the microlenses is +4.50D, and the diopter of the connecting spheres between the microlenses is +2.00D.

[0047] Microlenses are arranged in a circular ring with a diameter of 15-20mm outward from the center circle. The microlenses are connected by connecting balls. This area is the third refractive area. The refractive power of the third refractive area is the refractive power of the microlenses and the refractive power of the connecting balls. The refractive power of the microlenses is +5.00D, and the refractive power of the connecting balls connecting the microlenses is +2.50D.

[0048] Microlenses are arranged in a circular ring with a diameter of 20-35mm outward from the center circle. The microlenses are connected by connecting balls. This area is the fourth refractive area. The refractive power of the fourth refractive area is the refractive power of the microlenses and the refractive power of the connecting balls. The refractive power of the microlenses is +6.00D, and the refractive power of the connecting balls connecting the microlenses is +3.00D.

[0049] The first refractive zone is the area excluding the second, third, and fourth refractive zones. Because it solves the image jump problem between different refractive powers while ensuring the defocus amount, this lens can reduce the growth trend of the eye axis in adolescents, thereby inhibiting the rapid development of myopia in adolescents.

[0050] Example 3

[0051] Using lens raw materials with a refractive index of 1.50 and an Abbe number of 58, the lens raw materials are injected into a specific mold. After the curing process, the required semi-finished blank lenses are obtained through processes such as demoulding, edging, cleaning, hardening, coating and inspection.

[0052] Among them, the lens diameter is 80mm and the first diopter of the lens is +2.00D.

[0053] Microlenses are arranged in a circular ring with a diameter of 10-15 mm outward from the central circle. The microlenses are connected by connecting balls. This area is the second refractive area. The refractive power of the second refractive area is the refractive power of the microlenses and the refractive power of the connecting balls. The refractive power of the microlenses is -3.50D, and the refractive power of the connecting balls connecting the microlenses is -1.00D.

[0054] Microlenses are arranged in a ring with a diameter of 15-20mm outward from the center ring. These microlenses are connected by connecting balls. This area is the third refractive zone. The diopter of the third refractive zone is the sum of the diopter of the microlenses and the diopter of the connecting balls. The diopter of the microlenses is -4.00D, and the diopter of the connecting balls connecting the microlenses is -1.50D.

[0055] Microlenses are arranged in a ring 20-35mm outward from the center ring, connected by connecting balls. This area is the fourth refractive zone. The diopter of the fourth refractive zone is the sum of the diopter of the microlenses and the diopter of the connecting balls. The diopter of the microlenses is -4.50D, and the diopter of the connecting balls connecting the microlenses is -2.00D.

[0056] The first refractive zone is the area excluding the second, third, and fourth refractive zones. Because it solves the image jump problem between different refractive powers while ensuring the defocus amount, this lens can accelerate the growth trend of the adolescent eye axis, thereby inhibiting the rapid development of hyperopia in adolescents.

[0057] Example 4

[0058] Using lens raw materials with a refractive index of 1.60 and an Abbe number of 40, the lens raw materials are injected into a specific mold. After curing through a curing process, they undergo demoulding, edging, cleaning, hardening, coating and inspection processes to obtain the required semi-finished blank lenses.

[0059] Among them, the lens diameter is 80mm and the first diopter of the lens is +4.00D.

[0060] Microlenses are arranged in a circular ring with a diameter of 10-15 mm outward from the center circle. The microlenses are connected by connecting columns. This area is the second refractive area. The refractive power of the second refractive area is the refractive power of the microlenses and the refractive power of the connecting columns. The refractive power of the microlenses is -4.00D, and the refractive power of the connecting columns connecting the microlenses is -1.50D.

[0061] Microlenses are arranged in a circular ring with a diameter of 15-20 mm outward from the central circle. The microlenses are connected by connecting columns. This area is the third refractive area. The refractive power of the third refractive area is the refractive power of the microlenses and the refractive power of the connecting columns. The refractive power of the microlenses is -4.50D, and the refractive power of the connecting columns connecting the microlenses is -1.50D.

[0062] Microlenses are arranged in a ring with a diameter of 20-35mm outward from the center ring. Connecting pillars connect the microlenses, forming the fourth refractive zone. The diopter of the fourth refractive zone is the sum of the diopter of the microlenses and the diopter of the connecting pillars. The diopter of the microlenses is -5.00D, and the diopter of the connecting pillars connecting the microlenses is -1.50D.

[0063] The first refractive zone is formed as an area other than the areas forming the second, third, and fourth refractive zones. By ensuring defocus while solving the image jump problem between different diopters, this lens can accelerate the growth of the eye axis in adolescents, thereby inhibiting the rapid development of hyperopia in adolescents.

[0064] The beneficial effects that may be brought about by the embodiments of this specification include but are not limited to: (1) The eyeglasses of the present invention solve the image jump problem between different refractive powers by connecting microlenses with connecting balls, connecting columns or a combination thereof; (2) The eyeglasses can effectively regulate the growth trend of the eye axis of adolescents, thereby inhibiting the development of refractive errors of the eyes.

[0065] It should be understood that the exemplary embodiments described herein should be considered in a descriptive sense only and not for limiting purposes. Descriptions of features or aspects in each embodiment should generally be considered as applicable to similar features or aspects in other embodiments.

Claims

1. A spectacle lens for regulating the growth trend of the eye axis of teenagers, characterized in that: include: a first refractive area, providing a first refractive power for correcting ametropia, wherein the first refractive area is located at the center of the lens, and the first refractive power is -2.00D to +2.00D; and a second refractive area that focuses light on a location other than the retina and provides one or more second refractive powers different from the first refractive power; the second refractive power is obtained by adding a positive refractive power or a negative refractive power to the first refractive power; the difference between the refractive power of the second refractive area and the first refractive power is 1.00D to 9.00D; The second refractive area is located within a circular ring with an outward diameter of 10-15 mm from the first refractive area. The second refractive area is provided with a plurality of interconnected microlenses, the plurality of microlenses being arranged in a circular shape. The microlenses located in different circular areas have different refractive powers. The refractive powers of the microlenses between the rings gradually increase from the center to the periphery according to a direct proportional function, a quadratic function, an exponential function, or a power function. Each microlens is connected to adjacent microlenses in six directions by connecting columns or connecting balls. The refractive power of the microlens is different from the refractive power of the connecting post or the connecting ball, wherein the refractive power relationship between the microlens and the connecting post, the connecting ball, or the combination of the two satisfies: ,in and is a constant, is the distance from the microlens to the center of the lens. 2 . The spectacle lens according to claim 1 , wherein the first refractive power is the refractive power of a spherical or aspherical lens.

3. The spectacle lens according to claim 1, wherein The raw material of the eyeglass lens is a thermosetting resin, wherein the refractive index and Abbe number of the thermosetting resin meet at least one of the following conditions: (a) refractive index 1.67, Abbe number ≥ 30; (b) refractive index 1.60, Abbe number ≥ 40; (c) refractive index 156, Abbe number ≥ 38; (d) refractive index 150, Abbe number ≥ 56.

4. The spectacle lens according to claim 1, wherein: The raw material of the eyeglass lens is thermoplastic resin, and the transmittance of the thermoplastic resin is not less than 9%.

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