Spectacle lens

Abstract

The invention relates to a spectacle lens which comprises a lens body, the lens body is concentrically provided with three functional areas along the radial direction, and the three functional areas are a central refractive area, a second refractive area and a third refractive area from inside to outside in sequence; the central refraction area is arranged at the optical center of the lens body, the central refraction area is arranged to be an area with convex positive lens diopter, and the convex positive lens diopter range is + 1.00 D to + 3.00 D; the second refraction area surrounds the periphery of the central refraction area, and the second refraction area is arranged to be an area with a micro-frosted structure on the surface; the third refraction area surrounds the periphery of the second refraction area, and the third refraction area is arranged to be an area with a micro-frosted structure on the surface. According to the spectacle lens, active relaxation and passive inhibition are combined; the convex positive lens structure of the central refraction area realizes relaxation of ciliary muscles when people look near, so that asthenopia is reduced from the source; and the second and third refractive areas inhibit the growth of the eye axis through a defocusing effect to form double prevention and control of'relaxation + inhibition '.

Description

Technical Field

[0001] This invention relates to an eyeglass lens, belonging to the field of eyeglass lens technology. Background Technology

[0002] Myopia has become a major public health problem affecting the eye health of adolescents. Low myopia (usually defined as refractive error ≤ -3.00D), if not effectively intervened, is prone to developing into high myopia due to rapid axial elongation, increasing the risk of fundus lesions. Most existing myopia control lenses are designed based on the principle of "peripheral defocus," such as dividing the lens into a correction zone and a defocus intervention zone. This aims to inhibit axial elongation by creating myopic defocus in front of the retina (e.g., CN104678572B, CN113406812A). However, these lenses generally have the following shortcomings:

[0003] 1. Lack of active relaxation training function: Existing lenses focus on "passive inhibition" and have not designed an active relaxation structure for the ciliary muscle tension caused by "excessive close-up work" in teenagers (such as reading books and electronic devices), so they cannot relieve eye fatigue or improve eye accommodation function.

[0004] 2. Insufficient eye centering guidance: When teenagers look at objects, they are prone to looking sideways (such as looking sideways or looking down), which causes their line of sight to deviate from the optical center of the lens. This not only reduces the defocus control effect, but may also cause abnormal binocular vision (such as strabismus tendency).

[0005] 3. Poor balance between visibility and control effect: Some defocused lenses, in order to enhance the suppression effect, are prone to forming excessively blurred areas, affecting the clarity of daily vision; or in order to ensure visibility, the control function is weakened, making it difficult to balance "effective suppression" and "sufficient visibility".

[0006] Therefore, the purpose of this invention is to provide a spectacle lens that combines eye training and relaxation functions with the function of inhibiting the development of low-grade myopia. Summary of the Invention

[0007] To address the shortcomings of the aforementioned technologies, this invention provides an eyeglass lens that can demonstrate training relaxation and inhibition of low myopia, while ensuring adequate visibility in the micro-blurred area for proper wear. The lens includes a triconvex positive lens refractive power area of ​​3.5mm to 45mm, with different circle sizes to relax the eyes when viewing near objects. The second and third zones are micro-frosted areas, preventing the eyes from squinting and ensuring the eyeball remains centered, thus more effectively training relaxation and inhibiting excessively rapid elongation of the eye axis.

[0008] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0009] An eyeglass lens includes a lens body, wherein the lens body is concentrically arranged with three functional areas along the radial direction, which are, from the inside to the outside, a central refractive area, a second refractive area and a third refractive area;

[0010] The central refractive zone is located at the optical center of the lens body. The central refractive zone is configured to have a convex positive lens power, with a convex positive lens power range of +1.00D to +3.00D, which is used to achieve eye relaxation when looking at near objects.

[0011] The second refractive area surrounds the central refractive area. The second refractive area is configured as a region with a micro-frosted surface to guide the eyeball to avoid looking sideways and to always be in a non-off-center state.

[0012] The third refractive zone surrounds the second refractive zone. The third refractive zone is configured as an area with a micro-frosted surface to enhance the centering guidance of the eyeball and form a micro-blurred zone to help inhibit the development of low myopia and ensure visibility.

[0013] Furthermore, the diameter of the first refractive zone ranges from 3.5 mm to 45 mm, and the light transmittance is not less than 90%.

[0014] Furthermore, the radial width of the second refractive zone is 10mm to 20mm, the sanding density is 100 to 200 mesh, and the light transmittance is 85% to 90%.

[0015] Furthermore, the radial width of the third refractive zone is 5mm to 15mm, the sanding density is 80 to 150 mesh, and the light transmittance is 80% to 85%.

[0016] Furthermore, the junction between the second and third refractive areas adopts a gradient sanding density design, with the sanding density gradually transitioning from 100-200 mesh to 80-150 mesh.

[0017] Furthermore, the micro-frosted structures of the second and third refractive areas are integrally formed with the lens body through physical etching or coating processes.

[0018] The beneficial effects of this invention are: 1. Combination of active relaxation and passive inhibition: The convex lens structure in the central refractive zone achieves "ciliary muscle relaxation when looking at near objects," reducing eye strain from the source; the second and third refractive zones inhibit axial elongation through defocus effect, forming a dual "relaxation + inhibition" control; 2. Precise centered guidance: The dual micro-frosted zones guide the eyeball to always be in a non-off-center state through "blurred prompts," avoiding the decrease in control effect caused by looking at sideways, while improving binocular vision; 3. Balance between visibility and wearing comfort: The light transmittance of the micro-frosted zone is controlled at 80% to 90%, forming "micro-blurring rather than full blurring," ensuring daily visual needs without affecting the control effect; the concentric setting of each area and smooth transition avoid visual breaks and ensure comfortable wearing; 4. Wide adaptability: The gradient refractive power and multi-region design of the central relaxation zone adapt to different near viewing distances (reading, writing, electronic devices), suitable for the daily learning and life scenarios of teenagers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the planar structure of the spectacle lens of the present invention.

[0020] Figure 2 This is a cross-sectional view of the eyeglass lens of the present invention.

[0021] The lens consists of: lens body 1; central refractive zone 10; second refractive zone 20; and third refractive zone 30. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of the present invention, the following description is provided in conjunction with the appendix. Figure 1-2 Further analysis of the present invention is required.

[0023] like Figure 1-2 As shown, an eyeglass lens includes a lens body 1, wherein the lens body 1 is concentrically arranged with three functional areas along the radial direction, namely, a central refractive area 10, a second refractive area 20 and a third refractive area 30 from the inside to the outside;

[0024] The central refractive zone 10 is located at the optical center of the lens body 1. The central refractive zone 10 is configured as a region with a convex positive lens refractive power, the range of which is +1.00D to +3.00D, and is used to achieve eye relaxation when looking at near objects.

[0025] The second refractive area 20 surrounds the central refractive area 10. The second refractive area 20 is configured as a region with a micro-frosted surface to guide the eyeball to avoid looking sideways and to always be in a non-off-center state.

[0026] The third refractive zone 30 surrounds the second refractive zone 20. The third refractive zone 30 is configured as a region with a micro-frosted surface to enhance the centering guidance of the eyeball and form a micro-blurred zone to help inhibit the development of low myopia and ensure visibility.

[0027] Preferably, the diameter of the first refractive zone 10 is in the range of 3.5 mm to 45 mm, and the light transmittance is not less than 90%.

[0028] Preferably, the radial width of the second refractive zone 20 is 10mm to 20mm, the sanding density is 100 to 200 mesh, and the light transmittance is 85% to 90%.

[0029] Preferably, the radial width of the third refractive zone 30 is 5mm to 15mm, the sanding density is 80 to 150 mesh, and the light transmittance is 80% to 85%.

[0030] Preferably, the junction between the second refractive area 20 and the third refractive area 30 adopts a gradient sanding density design, with the sanding density gradually transitioning from 100-200 mesh to 80-150 mesh.

[0031] Preferably, the micro-frosted structure of the second refractive area 20 and the third refractive area 30 is integrally formed with the lens body through physical etching or coating processes.

[0032] The technical solution of the present invention will be described in detail below with reference to three specific embodiments. Each embodiment is based on the core design of the present invention: a combination of active relaxation and passive inhibition, with parameters adjusted only for different myopic populations. All embodiments have been verified through optical performance testing and wearing experience.

[0033] Example 1: For "junior high school students who mainly read paper books" (reading / writing for 4-5 hours a day).

[0034] 1. Applicable Scenarios

[0035] For junior high school students aged 13-15, whose daily activities mainly involve reading textbooks and writing homework, focusing on close-up scenes (close-up distance 25-30cm), it is necessary to address the issues of "ciliary muscle tension caused by prolonged looking down at close objects" and "habitual side-looking while writing," while ensuring clarity when looking at the blackboard in class (looking at a distance of 5-8m).

[0036] 2. Lens parameter design

[0037]

[0038]

[0039] 3. Actual usage performance data (tracked for 6 months)

[0040] Relief from eye strain: After reading continuously for 40 minutes, the eye strain score dropped from the initial 7.8 / 10 to 3.2 / 10, and the ciliary muscle accommodation flexibility improved by 35%;

[0041] Eye centering rate: The frequency of eye deviation from the optical center while writing decreased from an average of 126 times per day to 45 times, and the incidence of latent strabismus decreased from 28% to 11%.

[0042] Myopia control effect: The average monthly growth rate of axial length decreased from 0.04 mm / month to 0.021 mm / month, which is lower than the 0.03 mm / month of ordinary defocus lenses.

[0043] Example 2: Targeting "primary school students who frequently use electronic devices" (averaging 2-3 hours of screen time per day on tablets / phones).

[0044] 1. Applicable Scenarios

[0045] For primary school students aged 8-12, who frequently use electronic devices (viewing at close range of 20-25cm with strong screen light stimulation), it is necessary to focus on addressing "ciliary muscle spasm caused by close-range screen viewing" and "the risk of strabismus from lying down while looking at mobile phones," while ensuring that young children have a high demand for "clear vision."

[0046] 2. Lens parameter design

[0047]

[0048]

[0049]

[0050] 3. Actual usage performance data (tracked for 6 months)

[0051] Ciliary muscle condition: After looking at electronic screens for 30 minutes, ciliary muscle tension decreased by 51% compared to ordinary lenses, and the incidence of dry eye syndrome decreased from 35% to 17%.

[0052] Eye centering effect: The duration of time when looking at a mobile phone while lying down decreased from an average of 42 minutes to 13 minutes per day, and the pass rate for strabismus tendency screening increased from 62% to 89%.

[0053] Myopia progression control: The rate of increase in refractive error decreased from an average of -0.50D / 6 months to -0.22D / 6 months, which is better than the -0.35D / 6 months of ordinary defocus lenses for the same age group.

[0054] Example 3: For "high school students who need to balance looking at distant objects in class and looking at near objects after class" (averaging 6 hours of looking at distant objects in class and 3 hours of looking at near objects after class per day).

[0055] 1. Applicable Scenarios

[0056] For high school students aged 16-18, it is necessary to balance the "high-definition need for looking at the blackboard in class (10-15m away)" with the "relaxation need for doing practice problems after class (25-30cm away)," while also addressing the problem of "decreased accommodation function caused by prolonged high-intensity use of the eyes."

[0057] 2. Lens parameter design

[0058]

[0059]

[0060] 3. Actual usage performance data (tracked for 6 months)

[0061] Improved accommodation: The eye's accommodation range increased from the initial 6.5D to 8.2D, and the accommodative hysteresis decreased from 0.80D to 0.35D, which is better than the accommodation range of 7.1D of ordinary lenses;

[0062] Balanced vision for both near and far distances: The satisfaction rate with the clarity of the blackboard in the classroom reached 98%, and the visual fatigue score after 45 minutes of close-up viewing after class was only 3.5 / 10, which is significantly lower than that of ordinary lenses (6.2 / 10).

[0063] Axial length control effect: The average monthly growth rate of axial length decreased from 0.035 mm / month to 0.018 mm / month, and the risk rate of high myopia (≥-6.00D) decreased from 19% to 8%.

[0064] This document uses embodiments to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An ophthalmic lens, characterized in that: The lens body is radially concentrically provided with three functional areas, from inside to outside, a central refractive area, a second refractive area and a third refractive area; The central refractive area is provided at the optical center of the lens body, and the central refractive area is provided as an area with convex mirror diopter, and the convex mirror diopter ranges from +1.00D to +3.00D, which is used to relax the eyes when looking at the near; The second refractive area surrounds the periphery of the central refractive area, and the second refractive area is provided as an area with a micro-sand structure on the surface, which is used to guide the eyeball to avoid looking obliquely and always be in a non-deviated central state; The third refractive area surrounds the periphery of the second refractive area, and the third refractive area is provided as an area with a micro-sand structure on the surface, which is used to strengthen the central guidance of the eyeball and form a micro-fuzzy area to assist in inhibiting the development of low myopia and ensuring visibility.

2. The ophthalmic lens of claim 1, wherein: The diameter of the first refractive area ranges from 3.5mm to 45mm, and the light transmittance is not less than 90%.

3. The ophthalmic lens of claim 1, wherein: The radial width of the second refractive area is 10mm to 20mm, the sanding density is 100 to 200 meshes, and the light transmittance is 85% to 90%.

4. The ophthalmic lens of claim 1, wherein: The radial width of the third refractive area is 5mm to 15mm, the sanding density is 80 to 150 meshes, and the light transmittance is 80% to 85%.

5. The ophthalmic lens of claim 1, wherein: The junction of the second refractive area and the third refractive area adopts a gradually changing sanding density design, and the sanding density gradually transitions from 100 to 200 meshes to 80 to 150 meshes.

6. The ophthalmic lens of claim 1, wherein: The micro-sand structure of the second refractive area and the third refractive area is integrally formed with the lens body through physical etching or coating process.

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