Sclera lens with prevention and control functions

Abstract

The utility model relates to the technical field of contact lenses, in particular to a sclera lens with a prevention and control function, which comprises an optical prevention and control area, a middle transition area and an edge landing area. The optical prevention and control area comprises a central area, a vision changing area and a peripheral point diffusion area. The central area is a smooth lens, the variable vision area is arranged on the periphery of the central area and is annular, and the peripheral point diffusion area is arranged on the periphery of the variable vision area and is annular. The vision changing area and the peripheral point diffusion area are both provided with light diffusion points, the atomization effect is achieved, the periphery of the retina is subjected to fuzzy imaging, and the light diffusion points are hole-shaped structural parts. A vision changing area is arranged in an optical prevention and control area, light diffusion points are formed in the vision changing area and a peripheral point diffusion area, light rays are diffused softly through the light diffusion points, the diffused light rays enable the signal difference of adjacent cone cells on the retina to be reduced, meanwhile, an atomization effect is presented, the periphery of the retina is blurred to be imaged, and the retina imaging effect is improved. The purposes of reducing the retina contrast and slowing down myopia growth are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of contact lenses, in particular to a scleral lens with a prevention and control function. Background Art

[0002] At present, the myopia prevention and control lenses for teenagers mainly include three categories: microlens array lenses, annular structure lenses, and free aperture lenses. And most of the current prevention and control glasses are frame glasses and are only for teenagers without other eye diseases. However, there are some teenagers who have eye diseases, such as high refractive error, keratoconus, large astigmatism, corneal trauma, etc. For this part of people, the myopia prevention and control effect is almost non-existent, and it will also cause the problem of rapid increase in the degree. Therefore, people with eye diseases cannot use the myopia prevention and control frame glasses, and thus cannot meet the needs of myopia prevention and control. Content of the Utility Model

[0003] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a scleral lens with a prevention and control function, which solves the technical problem that people with eye diseases cannot use the myopia prevention and control frame glasses, and thus cannot meet the needs of myopia prevention and control.

[0004] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0005] The embodiment of the utility model provides a scleral lens with a prevention and control function, which includes an optical prevention and control area, an intermediate transition area, and an edge landing area;

[0006] The intermediate transition area is arranged on the outer periphery of the central optical prevention and control area and is annular;

[0007] The edge landing area is annular and arranged on the outer periphery of the intermediate transition area, and its inner surface contacts the sclera. The optical prevention and control area includes a central area, a metamorphopsia area, and a peripheral point spread area;

[0008] The central area is a smooth lens. The metamorphopsia area is arranged on the outer periphery of the central area and is annular. The peripheral point spread area is arranged on the outer periphery of the metamorphopsia area and is annular;

[0009] Both the metamorphopsia area and the peripheral point spread area are provided with light diffusion points, presenting a fogging effect to make the peripheral retina form a blurred image;

[0010] The light diffusion points are pore-like structural members, and the aperture size of the pore-like structural members is about 0.2 mm to 0.5 mm.

[0011] Optionally, the central area is a circular area with the refractive degrees of both eyes measured during optometry, and the diameter is 1 mm to 4 mm.

[0012] Optionally, the inner diameter of the variable viewing area is 1 mm to 4 mm, and the outer diameter is 1.5 mm to 4.5 mm.

[0013] Optionally, the inner diameter of the peripheral point diffusion area is 1.5 mm to 4.5 mm, and the outer diameter is 9 mm to 10 mm.

[0014] Optionally, the peripheral point diffusion area and the variable viewing area are both embedded with a plurality of light diffusion points by means of laser engraving or lens mold forming.

[0015] Optionally, the hole-shaped structural member is arranged in an outward-diffusing array along the axis of the central area.

[0016] Optionally, the atomization effect reduces the retinal contrast by at least 30%.

[0017] Optionally, the peripheral point diffusion area is arranged on the outer surface of the optical prevention and control area.

[0018] The beneficial effects of the present utility model are as follows: A scleral lens with a prevention and control function of the present utility model forms light diffusion points on both the variable viewing area and the peripheral point diffusion area by setting a variable viewing area in the optical prevention and control area. These light diffusion points gently diffuse light, reducing the signal difference between adjacent cone cells on the retina after diffusion. At the same time, an atomization effect is presented, blurring the imaging of the peripheral retina, achieving the purpose of reducing the retinal contrast of the fundus and slowing down the growth of myopia. This enables patients with eye diseases to use the scleral lens to improve the corrected vision of the eyes while meeting the need for myopia prevention and control. The applicable population is wider, and thus teenagers with eye diseases can effectively control their vision when wearing the scleral myopia prevention and control glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the scleral lens with a prevention and control function of the present utility model;

[0020] Figure 2 is a schematic cross-sectional structural diagram of the scleral lens with a prevention and control function of the utility model.

[0021] DESCRIPTION OF THE REFERENCE NUMERALS

[0022] 1: Optical prevention and control area; 11: Central area; 12: Variable viewing area; 13: Peripheral point diffusion area; 2: Intermediate transition area; 3: Edge abutting area; 4: Arc surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to better explain the present utility model for easy understanding, the present utility model will be described in detail below with reference to the accompanying drawings through specific embodiments.

[0024] Example 1:

[0025] SeeFigure 1 - Figure 2 As shown, a scleral lens with a prevention and control function includes an optical prevention and control area 1, an intermediate transition area 2, and an edge abutment area 3. The intermediate transition area 2 is arranged on the outer periphery of the central optical prevention and control area 1 and is annular. The edge abutment area 3 is annular and arranged on the outer periphery of the intermediate transition area 2, and its inner surface (the side close to the eyeball) contacts the sclera. The optical prevention and control area 1 includes a central area 11 and a metamorphopsia area 12. The central area 11 is a smooth lens, the metamorphopsia area 12 is arranged on the outer periphery of the central area 11 and is annular, and the peripheral point diffusion area 13 is arranged on the outer periphery of the metamorphopsia area 12 and is annular. Both the metamorphopsia area 12 and the peripheral point diffusion area 13 are provided with light diffusion points, presenting a fogging effect to make the peripheral retina form a blurred image.

[0026] In this embodiment, a scleral lens with a prevention and control function forms light diffusion points on both the metamorphopsia area 12 and the peripheral point diffusion area by setting the metamorphopsia area 12 in the optical prevention and control area 1. These light diffusion points gently diffuse light, reducing the signal difference between adjacent cone cells on the retina after diffusion. At the same time, it presents a fogging effect to make the peripheral retina form a blurred image, reducing the contrast of the fundus retina and achieving the purpose of slowing down myopia growth. It enables patients with eye diseases to use the scleral lens to improve the corrected vision of the eyes while meeting the need for myopia prevention and control. The applicable population is wider, and teenagers with eye diseases can effectively control their vision when wearing the scleral myopia prevention and control lens.

[0027] Furthermore, the central area 11 is a circular area with the refractive power of both eyes for optometry, and its diameter is 1 mm to 4 mm.

[0028] Furthermore, the inner diameter of the metamorphopsia area 12 is 1 mm to 4 mm, and the outer diameter is 1.5 mm to 4.5 mm.

[0029] Furthermore, the inner diameter of the peripheral point diffusion area 13 is 1.5 mm to 4.5 mm, and the outer diameter is 9 mm to 10 mm. Here, it should be noted that the diameter of the optical prevention and control area of the scleral lens is 10 mm.

[0030] Furthermore, both the peripheral point diffusion area 13 and the metamorphopsia area 12 are embedded with multiple light diffusion points by means of laser engraving or lens mold forming processes. In this embodiment, by using the laser engraving or lens mold forming process, the light diffusion points are more invisible, improving the aesthetics, making it easier for patients to accept, reducing the production cost at the same time, and allowing for personalized pattern customization.

[0031] Furthermore, the light diffusion points are hole-shaped structural parts formed by dot matrix or lattice, or hole-shaped structural parts formed by multiple concentric circular patterns or multiple fan-shaped patterns.

[0032] The central area coincides with the observation position on the visual axis of the wearer, while the peripheral point diffusion area 13 corresponds to the peripheral vision of the wearer.

[0033] In this embodiment, the light diffusion points reduce the contrast of the wearer's peripheral vision by scattering the light passing through those areas into the wearer's eyes. The shape of the light diffusion points is circular, and the size of the aperture is about 0.2 mm to 0.5 mm.

[0034] Furthermore, the hole-shaped structural member is arranged in an outward diffusion array along the axis of the central region 11.

[0035] Furthermore, the atomization effect reduces the retinal contrast by 30%. Specifically, the scleral lens with the prevention and control function in this embodiment can set the light diffusion point areas with different atomization degrees according to the visual sensitivity and myopic refractive power of the child, making the peripheral retina form blurred images to different degrees, more effectively reducing the retinal contrast of the human eye, and achieving the purpose of slowing down the growth of myopia. Considering the wearing comfort, preferably, a dot pattern with 30% atomization is generally selected for better adaptation.

[0036] Furthermore, the peripheral point diffusion area 13 is arranged on the outer surface of the optical prevention and control area 1. It is convenient for molding and operation, and at the same time plays a certain protective role for the cornea, and the visual effect is better.

[0037] Furthermore, the edge of the edge abutting area 3 protrudes outwardly in a circular arc shape 4 around the entire circumference. The outermost ring arc-shaped surface design improves the wearing comfort when blinking, reduces the foreign body sensation, and at the same time makes the overall scleral lens have good stability, thereby making the supporting effect of the edge abutting area good and improving the stability of the overall scleral lens structure. Furthermore, it can ensure that the position of the central optical prevention and control area relative to the cornea is more stable, and thus prevent the scleral lens from moving.

[0038] Embodiment 2:

[0039] Different from Embodiment 1, in this embodiment, the light diffusion points reduce the contrast of the wearer's peripheral vision by scattering the light passing through those areas into the wearer's eyes. The shape of the light diffusion points is circular, and the size of the aperture is 1.5 mm.

[0040] Embodiment 3:

[0041] Different from Embodiment 1, in this embodiment, the light diffusion points reduce the contrast of the wearer's peripheral vision by scattering the light passing through those areas into the wearer's eyes. The shape of the light diffusion points is circular, and the size of the aperture is 0.7 mm.

[0042] Embodiment 4:

[0043] Differing from Example 1, the peripheral point spread area 13 of the periphery has 35%, 40%, 45%, 50%, 55%, 60% dot coverage. The dot pattern selects the atomization degree according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0044] Example 5:

[0045] Differing from Example 1, the peripheral point spread area 13 of the periphery has 35% dot coverage. The dot pattern selects the atomization degree according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0046] Example 6:

[0047] Differing from Example 1, the peripheral point spread area 13 of the periphery has 40% dot coverage. The dot pattern selects the atomization degree according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0048] Example 7:

[0049] Differing from Example 1, the peripheral point spread area 13 of the periphery has 45% dot coverage. The dot pattern selects the atomization degree according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0050] Example 8:

[0051] Differing from Example 1, the peripheral point spread area 13 of the periphery has 50% dot coverage. The dot pattern selects the atomization degree according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0052] Example 9:

[0053] Differing from Example 1, the peripheral point spread area 13 of the periphery has 55% dot coverage. The dot pattern selects the atomization degree according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0054] Example 10:

[0055] Differing from Example 1, the peripheral point spread area 13 of the periphery has 60% dot coverage. The dot pattern selects the atomization degree according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0056] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0057] In the present utility model, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly defined and limited, when the first feature is "on" or "under" the second feature, it may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, when the first feature is "above", "over" and "on top of" the second feature, it may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. When the first feature is "under", "beneath" and "underneath" the second feature, it may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0059] In the description of this specification, the descriptions of the terms "an embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0060] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A scleral lens with a prevention and control function, characterized in that: It includes an optical prevention and control area (1), an intermediate transition area (2), and an edge landing area (3); The intermediate transition area (2) is arranged on the outer periphery of the central optical prevention and control area (1) and is annular; The edge landing area (3) is annular and arranged on the outer periphery of the intermediate transition area (2), and its inner surface is in contact with the sclera. The optical prevention and control area (1) includes a central area (11), a variable vision area (12), and a peripheral point spread area (13); The central area (11) is a smooth lens. The variable vision area (12) is arranged on the outer periphery of the central area (11) and is annular. The peripheral point spread area (13) is arranged on the outer periphery of the variable vision area (12) and is annular; Both the variable vision area (12) and the peripheral point spread area (13) are provided with light diffusion points, presenting a fogging effect to make the peripheral retina form a blurred image; The light diffusion point is a hole-shaped structural member, and the size of the aperture of the hole-shaped structural member is about 0.2 mm to 0.5 mm.

2. The scleral lens with a prevention and control function according to claim 1, characterized in that: The central area (11) is for the binocular refractive power of optometry, and it is a circular area with a diameter of 1 mm to 4 mm.

3. The scleral lens with a prevention and control function according to claim 1, characterized in that: The inner diameter of the variable vision area (12) is 1 mm to 4 mm, and the outer diameter is 1.5 mm to 4.5 mm.

4. The scleral lens with a prevention and control function according to claim 3, characterized in that: The inner diameter of the peripheral point spread area (13) is 1.5 mm to 4.5 mm, and the outer diameter is 9 mm to 10 mm.

5. The scleral lens with a prevention and control function according to claim 1, wherein: Both the peripheral point spread area (13) and the variable vision area (12) are embedded with a plurality of light diffusion points by means of laser engraving or lens mold forming process.

6. The scleral lens with the prevention and control function according to claim 5, characterized in that: The hole-shaped structural members are arranged in an array that spreads out along the axis of the central area (11).

7. The scleral lens with a prevention and control function according to claim 1, characterized in that: The fogging effect reduces the retinal contrast by at least 30%.

8. The scleral lens with a prevention and control function according to claim 5, characterized in that: The peripheral point spread area (13) is arranged on the outer surface of the optical prevention and control area (1).

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