Prevention and control lens for delaying myopia degree development and ocular axis growth

Abstract

The utility model relates to a prevention and control lens for delaying myopia degree progress and eye axis growth. The prevention and control lens comprises a lens main body, an optical correction area, a high defocus area and a point diffusion area are arranged on the lens main body. And the adjacent areas are in arc transition. The optical correction area is located at the optical center of the lens body. And a plurality of micro lenses which are diffused outwards from the optical center are arranged between the optical correction area and the high defocus area. And a plurality of circles of micro lenses which are arranged in an annular manner are also arranged in the high defocus area. The point diffusion region is located on the outer ring of the high defocus region. According to the utility model, the optical correction area, the high defocus area and the point diffusion area are matched, so that when a user sees the lens, due to the interaction but non-overlapping arrangement of the three areas, fuzzy imaging cannot be generated, the contrast ratio of the user seeing black and white characters can be effectively reduced, the activity of bipolar cells is reduced, and the user experience is improved. Further, the eye axis increase is delayed.

Description

Technical Field

[0001] This utility model relates to the field of optical lens technology, and in particular to a control lens that slows down the progression of myopia and the elongation of the axial length of the eye. Background Technology

[0002] Traditional single-vision lenses can only correct central vision and cannot effectively control peripheral retinal defocus, leading to peripheral hyperopic defocus that stimulates axial elongation, thus limiting their effectiveness in preventing and controlling axial elongation. To address this issue, defocus lenses have been developed. These lenses create myopic defocus around the retina by incorporating microlenses or defocus structures in the peripheral area, thereby inhibiting axial elongation. However, existing defocus lenses have the following shortcomings:

[0003] Simple defocus area design: Most lenses use only a single defocus structure (such as a ring microlens), which can easily lead to the eyes adapting to defocus stimulation with long-term wear, weakening the control effect;

[0004] Insufficient visual comfort: The abrupt combination of traditional Dot Diffusion Technology (DOT) and multi-point defocus areas may lead to blurred images and visual fatigue;

[0005] Unoptimized accommodation for near-field use: When teenagers use their eyes at close range, the eye's accommodative muscles are under constant tension. Existing lenses lack a relaxation design for near vision, which fails to relieve accommodative fatigue and indirectly accelerates the progression of myopia.

[0006] Furthermore, existing lenses often employ uniform spacing or a fixed pattern for their microlens arrangement, making it difficult to achieve differentiated defocus stimulation of the eye. The transition design between the optical correction zone and the peripheral functional zone is also not refined enough, potentially leading to blurriness during visual transitions. Therefore, a new type of control lens is needed that combines efficient defocus control, visual comfort, and accommodative relaxation functions to more accurately slow the progression of myopia and axial elongation.

[0007] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this utility model, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that this utility model does not have the features of these prior art. On the contrary, this utility model has all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Utility Model Content

[0008] To address the shortcomings of existing technologies, this invention provides a control lens for slowing the progression of myopia and axial elongation, comprising a lens body. The lens body has an optical correction zone, a high defocus zone, and a dot diffusion zone. Adjacent zones are transitioned by an arc. The optical correction zone is located at the optical center of the lens body. Between the optical correction zone and the high defocus zone, several microlenses are arranged, diffusing outward from the optical center. Within the high defocus zone, several rings of microlenses are also arranged in a circular pattern. The dot diffusion zone is located on the outer ring of the high defocus zone.

[0009] According to a preferred embodiment, the lens body is further provided with a relaxation area, and the relaxation area is configured as a composite lens consisting of a prism and a convex lens.

[0010] According to a preferred embodiment, the high defocus area is formed outside the circular area with a diameter of 7mm-11mm that covers the optical correction area, with the center of the lens body as the center, and the high defocus area forms an annular area with the circular area as the boundary.

[0011] According to a preferred embodiment, the high defocus region is composed of a plurality of regularly arranged microlenses. The plurality of microlenses form a plurality of concentric rings in the high defocus region, and the spacing between adjacent rings increases sequentially from the inside to the outside.

[0012] According to a preferred embodiment, a plurality of microlenses form a first concentric circle, a second concentric circle, and a third concentric circle in a high defocus region. The inter-concentric circle spacing between the first and second concentric circles is set to a range of 0.5 mm to 1.5 mm, and the inter-concentric circle spacing between the second and third concentric circles is set to a range of 0.8 mm to 1.8 mm.

[0013] According to a preferred embodiment, a plurality of microlenses between the optical correction zone and the high defocus zone are arranged in a strip-shaped outward diffusion manner. The plurality of microlenses form at least eight groups of outwardly diffusion strip-shaped combinations. The length of each strip-shaped combination is set to range from 2 mm to 6 mm. The microlenses of the first concentric layer are tangentially arranged to the microlenses of the outermost layer of the strip-shaped combinations.

[0014] In a preferred embodiment, no microlenses are provided in the optical correction area. The diameter of the optical correction area is set to 5 mm.

[0015] According to a preferred embodiment, the dot diffusion region does not overlap with the optical correction region and the high defocus region, and is located in the annular region of the lens body after excluding the optical correction region and the high defocus region.

[0016] According to a preferred embodiment, the relaxation zone is located outside the optical correction zone and the high defocus zone, and is located on the lower vertical edge of the lens body.

[0017] According to a preferred embodiment, the relaxation zone is shaped like a fan or an ellipse. The distance between the nearest point of the relaxation zone and the optical center of the lens body is set to 9mm-15mm. Attached Figure Description

[0018] Figure 1 This is a simplified structural diagram of a control lens for delaying the progression of myopia and the elongation of the axial length, provided by a preferred embodiment of the present invention, without a relaxation zone.

[0019] Figure 2 This is a simplified structural diagram of the relaxation zone of a control lens for delaying the progression of myopia and axial elongation, provided by a preferred embodiment of this utility model.

[0020] List of reference numerals

[0021] 100: Lens body; 101: Microlens; 200: Optical correction zone; 300: High defocus zone; 301: First ring; 302: Second ring; 303: Third ring; 400: Dot diffusion zone; 500: Relaxation zone. Detailed Implementation

[0022] The following is a detailed explanation with reference to the accompanying drawings.

[0023] Example 1

[0024] This invention provides a lens for controlling the progression of myopia and the elongation of the eye axis, such as... Figure 1As shown, the lens includes a lens body 100. The lens body 100 has an optical correction area 200, a high defocus area 300, and a dot diffusion area 400. Adjacent areas are transitioned by an arc. This arc transition ensures visual comfort for the user and reduces blurriness when switching between near and far vision, achieving seamless visual transition. The optical correction area 200 is located at the optical center of the lens body 100. Between the optical correction area 200 and the high defocus area 300, several microlenses 101 are arranged, diffusing outward from the optical center. The high defocus area 300 also contains several rings of microlenses arranged in a circular pattern. The dot diffusion area 400 is located around the outer ring of the high defocus area 300. Traditional dot diffusion technology (DOT, Diffuse Optical Tomography or Optical Diffusion Tomography) on the inner surface of lenses can lead to decreased image clarity and eye fatigue when using the lens. However, traditional single-vision lenses, which do not cause the aforementioned blurring problem, cannot generate high defocus at the fovea of ​​the macula in the user's eye, leading to accelerated axial elongation. Therefore, this invention employs a combined design of an optical correction zone 200, a high defocus zone 300, and a dot diffusion zone 400. This design ensures that when the user looks at the lens, the interaction but non-overlapping arrangement of these elements prevents image blurring. It also effectively reduces the contrast when the user sees black and white text, decreases bipolar cell activity, and thus slows down axial elongation.

[0025] According to a preferred embodiment, a high defocus area 300 is formed outside a circular region with a diameter of 7mm-11mm covering the optical correction area 200, centered at the center of the lens body 100, and the high defocus area 300 forms an annular region bounded by the circular region. The high defocus area 300 can have a high defocus amount, generating a central defocus signal within 10 to 20 degrees of the periphery of the fovea of ​​the user's eye, thereby achieving high defocus filling of the user's eye. The high-density characteristics of this high defocus area 300 produce the best effect in delaying the increase in the user's axial length.

[0026] According to a preferred embodiment, the high defocus zone 300 is composed of a plurality of regularly arranged microlenses 101. The microlenses 101 form a plurality of concentric rings within the high defocus zone 300, and the spacing between adjacent rings increases sequentially from the inside out. This increasing spacing provides differentiated defocus stimulation to the user's eye, improving the sustainability of myopia management.

[0027] According to a preferred embodiment, a plurality of microlenses 101 form a first concentric layer 301, a second concentric layer 302, and a third concentric layer 303 in a high defocus region 300. The inter-concentric spacing between the first concentric layer 301 and the second concentric layer 302 is set to a range of 0.5mm-1.5mm, and the inter-concentric spacing between the second concentric layer 302 and the third concentric layer 303 is set to a range of 0.8-1.8mm. The inter-concentric spacing between the first concentric layer 301, the second concentric layer 302, and the third concentric layer 303 allows the lens to present a symmetrical but asymmetrical shape, thereby creating multiple defocus stimulations with depth and space for the user's eyes, continuously enhancing the myopia delay effect while reducing defocus adaptation.

[0028] According to a preferred embodiment, a plurality of microlenses 101 between the optical correction zone 200 and the high defocus zone 300 are arranged in a strip-like outward diffusion pattern. The plurality of microlenses 101 form at least eight groups of outwardly diffusion strip-like combinations. The length of each strip-like combination is set to a range of 2mm-6mm. The microlenses 101 of the first ring layer 301 are tangentially disposed to the microlenses 101 of the outer layer of the strip-like combinations. This tangential arrangement allows the plurality of microlenses 101 to be closely arranged to continuously enhance the myopia delay effect. This strip-like arrangement can also be radial.

[0029] According to a preferred embodiment, the optical correction zone 200 does not contain a microlens 101. The diameter of the optical correction zone 200 is set to 5 mm. The optical correction zone 200 provided in this invention conforms to the size of the human pupil (between 5 mm and 7 mm), thereby serving as a transition zone with the high defocus zone 300 and increasing the adaptability of the user's eyes.

[0030] According to a preferred embodiment, the dot diffusion region 400 does not overlap with the optical correction region 200 and the high defocus region 300, and is located in the annular region of the lens body 100 after excluding the optical correction region 200 and the high defocus region 300. The dot diffusion region 400 is disposed along the edge of the microlens 101 of the third concentric layer 303. The non-overlapping arrangement of the dot diffusion region 400 with the optical correction region 200 and the high defocus region 300 can prevent blurred imaging of the user's eyes. When the user's eyes are looking at near objects, the dot diffusion region 400 acts on the eyes, thereby reducing contrast through softly scattered light, reducing the high contrast signal detected by the retinal photoreceptor cells and the elongation signal emitted to the eyes, thereby slowing down the elongation of the eye axis and slowing down the progression of myopia. When the user's eyes are looking at distant objects, the high defocus region 300 can generate defocus signals at all times, achieving the effect of delaying and preventing myopia.

[0031] Example 2

[0032] This embodiment is a further supplement to the above embodiments and does not mean that it does not contain the content of the above embodiments.

[0033] According to a preferred embodiment, such as Figure 2 As shown, the lens body 100 also includes a relaxation area 500, which is configured as a composite lens consisting of a prism and a convex lens. Preferably, the prism is configured with the base facing inward. Preferably, the convex lens is configured as a low-power convex lens. Thus, the combination of the base-inward prism and the low-power convex lens can convert the light rays from the user's near-field vision into parallel light, thereby improving the near-field vision environment and achieving a good telescopic effect.

[0034] It should be noted that the composite mirror, which combines a prism and a convex lens, is not visible on the lens surface. Its prism power is relatively small, therefore it does not affect the setting of the dot diffusion region 400, and the two can coexist. This composite mirror, combining a prism and a convex lens, is directly mounted on the lens body 100. It can be directly formed by a mold or achieved through machine grinding to combine the prism and the convex lens.

[0035] According to a preferred embodiment, the relaxation zone 500 is located outside the optical correction zone 200 and the high defocus zone 300, and is positioned near the lower vertical edge of the lens body 100. Preferably, the relaxation zone 500 is fan-shaped or elliptical. The distance between the closest point of the relaxation zone 500 and the optical center of the lens body 100 is set to 9mm-15mm. The composite lens combining a prism and a convex lens of this invention is superimposed on the dot diffusion zone 400, thereby enabling the user to achieve a clear image at the fovea of ​​the retina when looking at near objects. A clear image at the fovea of ​​the user's retina is necessary; otherwise, myopia control cannot be achieved. Therefore, this invention achieves a clear image at the fovea, and when the user looks at near objects, the user's eyes rotate inward and downward, causing the user's visual axis to follow the rotation. The user's visual axis is oriented towards the lower half of the lens body 100. The compound lens, consisting of a prism and a convex lens located in the lower half of the lens body 100, allows the user's eyes to be in a constant state of distance vision, thereby activating and adjusting the user's eyes and optimizing foveal imaging. Therefore, this invention can effectively improve the prevention and control of myopia.

[0036] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection scope. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. This utility model specification contains multiple inventive concepts; phrases such as "preferred" or "according to a preferred embodiment" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept. Throughout the text, the feature introduced by "preferred" is only an optional mode and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A control lens for delaying progression of myopia and ocular axial length growth, comprising a lens body (100), characterized in that, The lens body (100) is provided with an optical correction area (200), a high defocus area (300), and a dot diffusion area (400), with adjacent areas transitioning by an arc. The optical correction area (200) is located at the optical center of the lens body (100). Between the optical correction area (200) and the high defocus area (300), a plurality of microlenses (101) are arranged to diffuse outward from the optical center. The high defocus area (300) is also provided with a plurality of microlenses arranged in a ring. The dot diffusion area (400) is located on the outer ring of the high defocus area (300).

2. The control lens for delaying the progression of myopia and axial elongation according to claim 1, characterized in that, The lens body (100) is also provided with a relaxation area (500), which is configured as a composite lens consisting of a prism and a convex lens.

3. The control lens for delaying progression of myopia and axial elongation according to claim 2, wherein, The high defocus area (300) is formed outside the circular area with a diameter of 7mm-11mm that covers the optical correction area (200) with the center of the lens body (100) as the center, and the high defocus area (300) forms an annular area with the circular area as the boundary.

4. The myopia progression and axial length growth prevention control lens of claim 3, wherein, The high defocus region (300) is composed of a plurality of regularly arranged microlenses (101), wherein, The microlenses (101) form several concentric rings in the high defocus region (300), and the spacing between adjacent concentric rings increases sequentially from the inside to the outside.

5. The myopia progression and axial length growth prevention control lens of claim 4, wherein, A plurality of said microlenses (101) form a first concentric layer (301), a second concentric layer (302), and a third concentric layer (303) in the high defocus region (300), wherein, The spacing between the first ring (301) and the second ring (302) is set to a range of 0.5mm-1.5mm, and the spacing between the second ring (302) and the third ring (303) is set to a range of 0.8-1.8mm.

6. The myopia progression and axial length growth prevention control lens of claim 5, wherein, The microlenses (101) between the optical correction area (200) and the high defocus area (300) are arranged in a strip-shaped outward diffusion pattern, wherein, A plurality of the microlenses (101) form at least eight outwardly diffused strip combinations, the length of the strip combinations being set to a range of 2mm-6mm, and the microlenses (101) of the first ring layer (301) being tangential to the microlenses (101) of the outer layer of the strip combinations.

7. The myopia progression and axial length growth prevention control lens of claim 6, wherein, The microlens (101) is not disposed in the optical correction area (200), wherein, The diameter of the optical correction area (200) is set to 5 mm.

8. The myopia progression and axial length growth prevention control lens of claim 7, wherein, The dot diffusion region (400) does not overlap with the optical correction region (200) and the high defocus region (300), and is located in the annular region of the lens body (100) excluding the optical correction region (200) and the high defocus region (300).

9. The control lens for delaying the progression of myopia and axial elongation according to claim 2, characterized in that, The relaxation zone (500) is located outside the optical correction zone (200) and the high defocus zone (300), and is located on the lower vertical edge of the lens body (100).

10. The myopia progression and axial length growth prevention control lens of claim 9, wherein, The relaxation area (500) is configured to be fan-shaped or elliptical in shape, wherein, The distance range of the closest point of the relaxation zone (500) to the optical center of the lens body (100) is set to 9mm-15mm.

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