Sclera lens for myopia prevention and control

Abstract

The invention relates to the technical field of contact lenses, in particular to a sclera lens for myopia prevention and control, which comprises an optical area, a transition area and a landing area. And the optical area comprises a lens central area, a variable vision area and a point diffusion area. The lens central area is a smooth lens, the variable vision area is arranged on the periphery of the lens central area and is annular, and the point diffusion area is arranged on the periphery of the variable vision area and is annular. The variable vision area and the point diffusion area are both provided with light diffusion points, an atomization effect is presented, and the periphery of the retina is blurred and imaged. The vision changing area is arranged in the optical area, light diffusion points are formed in the vision changing area and the point diffusion area, light is diffused softly through the light diffusion points, the diffused light enables the signal difference of adjacent cone cells on the retina to be reduced, meanwhile, the atomization effect is presented, the periphery of the retina is blurred and imaged, and the effects of reducing the contrast ratio of the retina and improving the resolution of the retina are achieved. The purpose of slowing down myopia growth is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of contact lenses, and in particular to a scleral lens for myopia prevention and control. Background Art

[0002] In recent years, the development of myopia among Chinese teenagers has shown a trend of younger age, more severe and faster development. Therefore, the prevention and control task is very arduous. As one of the effective means of myopia prevention and control, prevention and control lenses for teenagers have developed rapidly in recent years. At present, there are nearly 60 types of youth prevention and control lenses in circulation on the market, mainly including three categories: microlens array lenses, ring-shaped structure lenses, and free-hole lenses. Point diffusion myopia control technology is considered to be a new solution for myopia management. Higher retinal contrast is considered to be a factor that causes myopia axial growth. Point diffusion myopia control technology is a technology that delays the development of myopia by adjusting the contrast signal received by the retina.

[0003] However, some teenagers suffer from eye diseases, such as high refractive error, keratoconus, large astigmatism, corneal trauma, etc. For these people, myopia prevention and control has almost no effect, and it will also cause the problem of rapid increase in myopia. Therefore, people with eye diseases cannot use frame glasses for myopia prevention and control, and thus cannot meet the needs of myopia prevention and control. Summary of the invention

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a scleral lens for myopia prevention and control, which solves the technical problem that people with eye diseases cannot use frame glasses for myopia prevention and control, and thus cannot meet the needs of myopia prevention and control.

[0005] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0006] An embodiment of the present invention provides a scleral lens for myopia prevention and control, comprising an optical zone, a transition zone and a landing zone;

[0007] The transition zone is arranged at the periphery of the central optical zone and is annular;

[0008] The landing zone is annularly arranged at the periphery of the transition zone and the inner surface is in contact with the sclera, and the optical zone includes a lens central zone, a variable vision zone and a point diffusion zone;

[0009] The central area of ​​the lens is a smooth lens, the variable vision area is arranged at the periphery of the central area of ​​the lens and is annular, and the point diffusion area is arranged at the periphery of the variable vision area and is annular;

[0010] The variable vision area and the point diffusion area are both provided with light diffusion points, presenting an atomization effect, so as to blur the imaging around the retina.

[0011] Optionally, the central area of ​​the lens is a circular area with a diameter of 1 mm to 4 mm, which is determined by the refractive power of both eyes of the optometry test.

[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 point diffusion zone has an inner diameter of 1.5 mm to 4.5 mm and an outer diameter of 9 mm to 10 mm.

[0014] Optionally, the point diffusion area and the variable vision area are both embedded with multiple light diffusion points by laser engraving or lens mold forming.

[0015] Optionally, the light diffusion points are hole-shaped structures formed in a lattice or grid shape, a plurality of concentric ring patterns, or a plurality of fan-shaped patterns.

[0016] Optionally, the hole-shaped structural members are arranged in an array that spreads outward along the axis of the central area of ​​the lens.

[0017] Optionally, the fogging effect reduces retinal contrast by at least 30%.

[0018] Optionally, the point diffusion zone is arranged on an outer surface of the optical zone.

[0019] The beneficial effects of the present invention are as follows: a scleral lens for myopia prevention and control of the present invention, by setting a variable vision zone in the optical zone, forms light diffusion points in the variable vision zone and the point diffusion zone, and utilizes these light diffusion points to diffuse light softly, and the diffused light reduces the signal gap between adjacent cone cells on the retina, while presenting an atomization effect, blurring the image around the retina, reducing the retinal contrast of the fundus, and achieving the purpose of slowing down the growth of myopia. It enables people with eye diseases to use scleral lenses to improve the corrected vision of the eyes while meeting the needs of myopia prevention and control. It is applicable to a wider range of people, so that teenagers with eye diseases can effectively control their vision when wearing scleral myopia prevention and control lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a scleral lens for myopia prevention and control of the present invention;

[0021] Figure 2 The present invention is a schematic diagram of the cross-sectional structure of a scleral lens for myopia prevention and control.

[0022] Description of Reference Numerals

[0023] 1: Optical zone; 11: Lens center zone; 12: Variable vision zone; 13: Point diffusion zone; 2: Transition zone; 3: Landing zone; 4: Curved surface. DETAILED DESCRIPTION

[0024] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0025] Embodiment 1:

[0026] See also Figure 1-Figure 2 As shown, a scleral lens for myopia prevention and control includes an optical zone 1, a transition zone 2 and a landing zone 3. The transition zone 2 is arranged at the periphery of the central optical zone 1 and is annular. The landing zone 3 is arranged at the periphery of the transition zone 2 in an annular shape and the inner surface (the side close to the eyeball) is in contact with the sclera, and the optical zone 1 includes a lens central zone 11 and a variable vision zone 12. The lens central zone 11 is a smooth lens, the variable vision zone 12 is arranged at the periphery of the lens central zone 11 and is annular, and the point diffusion zone 13 is arranged at the periphery of the variable vision zone 12 and is annular. Both the variable vision zone 12 and the point diffusion zone 13 are provided with light diffusion points, presenting a fogging effect, so that the peripheral retina is blurred and imaged.

[0027] In this embodiment, a scleral lens for myopia prevention and control is provided with a variable vision zone 12 in the optical zone 1, and light diffusion points are formed in both the variable vision zone 12 and the point diffusion zone 13. These light diffusion points are used to diffuse light softly, and the diffused light reduces the signal gap between adjacent cone cells on the retina, while presenting an atomization effect, blurring the image around the retina, thereby reducing the retinal contrast of the fundus, and achieving the purpose of slowing down the growth of myopia. It enables people with eye diseases to use scleral lenses to improve their corrected vision while meeting the needs of myopia prevention and control. It is applicable to a wider range of people, so that teenagers with eye diseases can effectively control their vision when wearing scleral myopia prevention and control lenses.

[0028] Furthermore, the central area 11 of the lens is a circular area with a diameter of 1 mm to 4 mm, which is used to test the diopter of both eyes.

[0029] Furthermore, the inner diameter of the variable viewing area 12 is 1 mm to 4 mm, and the outer diameter is 1.5 mm to 4.5 mm.

[0030] Further, the inner diameter of the 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 zone of the scleral lens is 10 mm.

[0031] Furthermore, the point diffusion area 13 and the variable vision area 12 are both embedded with multiple light diffusion points by laser engraving or lens mold forming. In this embodiment, by adopting laser engraving or lens mold forming, the light diffusion points are more invisible, the aesthetics are improved, and the patients are more likely to accept it, while reducing the production cost, and the pattern can be customized.

[0032] Furthermore, the light diffusion points are hole-shaped structural members formed in a lattice or grid shape, a hole-shaped structural member formed in a plurality of concentric ring patterns, or a plurality of fan-shaped patterns.

[0033] The central area of ​​the lens is aligned with the wearer's on-axis viewing position, while the peripheral point spread area 13 corresponds to the wearer's peripheral vision.

[0034] In this embodiment, the light diffusion dots reduce the contrast of the wearer's peripheral vision by scattering light passing through those areas toward the wearer's eyes. The light diffusion dots are circular in shape, and the size of the aperture is about 0.2 mm to 0.5 mm.

[0035] Furthermore, the hole-shaped structural members are arranged in an array that spreads outward along the axis of the central area 11 of the lens.

[0036] Furthermore, the atomization effect reduces the retinal contrast by 30%. Specifically, the scleral lens for myopia prevention and control in this embodiment can set light diffusion point areas with different atomization degrees according to the child's visual sensitivity and myopia diopter, so that the peripheral retina is blurred 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 a 30% atomization is generally selected for better adaptation.

[0037] Furthermore, the point diffusion area 13 is arranged on the outer surface of the optical zone 1, which is convenient for molding and operation, and at the same time plays a certain protective role on the cornea, and the visual effect is better.

[0038] Furthermore, the edge of the landing area 3 is protruded outward to form an arc surface 4. The outermost arc surface design improves the wearing comfort when blinking, reduces the foreign body sensation, and makes the overall scleral lens have good stability, thereby making the supporting effect of the landing area good and improving the stability of the overall scleral lens structure. In addition, it can ensure that the position of the central optical zone relative to the cornea is more stable, thereby preventing the scleral lens from moving.

[0039] Embodiment 2:

[0040] Unlike Example 1, the light diffusion points in this embodiment reduce the contrast of the wearer's peripheral vision by scattering the light passing through those areas to the wearer's eyes. The shape of the light diffusion points is circular, and the aperture size is 1.5 mm.

[0041] Embodiment 3:

[0042] Different from Example 1, the light diffusion points in this embodiment reduce the contrast of the wearer's peripheral vision by scattering the light passing through those areas to the wearer's eyes. The shape of the light diffusion points is circular, and the aperture size is 0.7 mm.

[0043] Embodiment 4:

[0044] Different from Example 1, the peripheral dot diffusion zone 13 has 35%, 40%, 45%, 50%, 55%, and 60% dot coverage, and the dot pattern selects the degree of fogging based on the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0045] Embodiment 5:

[0046] Different from the embodiment 1, the peripheral dot diffusion area 13 has 35% dot coverage, the dot pattern has a fogging degree selected according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0047] Embodiment 6:

[0048] Different from the embodiment 1, the peripheral dot diffusion area 13 has 40% dot coverage, the dot pattern is selected to have a fogging 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.

[0049] Embodiment 7:

[0050] Different from the embodiment 1, the peripheral dot diffusion area 13 has 45% dot coverage, the dot pattern is selected to have a fogging 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.

[0051] Embodiment 8:

[0052] Different from the first embodiment, the peripheral dot diffusion area 13 has 50% dot coverage, the dot pattern is selected to have a fogging 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.

[0053] Embodiment 9:

[0054] Different from the first embodiment, the peripheral dot diffusion area 13 has 55% dot coverage, the dot pattern has a fogging degree selected according to the measured contrast sensitivity data and refractive power of the child, and provides reduced image contrast on other parts of the retina.

[0055] Embodiment 10:

[0056] Different from the embodiment 1, the peripheral dot diffusion area 13 has 60% dot coverage, the dot pattern is selected to have a fogging 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.

[0057] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0060] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations 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 any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0061] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A scleral lens for myopia prevention and control, comprising an optical zone (1), a transition zone (2) and a landing zone (3); The transition zone (2) is arranged at the periphery of the central optical zone (1) and is annular; The landing zone (3) is arranged in an annular shape on the periphery of the transition zone (2) and the inner surface of the landing zone (3) is in contact with the sclera, and is characterized in that: The optical zone (1) comprises a lens central zone (11), a variable vision zone (12) and a point diffusion zone (13); The central area (11) of the lens is a smooth lens, the variable vision area (12) is arranged at the periphery of the central area (11) of the lens and is in a ring shape, and the point diffusion area (13) is arranged at the periphery of the variable vision area (12) and is in a ring shape; The variable vision area (12) and the point diffusion area (13) are both provided with light diffusion points, presenting an atomization effect, thereby blurring the imaging of the periphery of the retina.

2. The scleral lens for myopia prevention and control according to claim 1, characterized in that: The central area (11) of the lens is a circular area with a diameter of 1 mm to 4 mm and is used for testing the diopter of both eyes.

3. The scleral lens for myopia prevention and control 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 for myopia prevention and control according to claim 3, characterized in that: The point diffusion zone (13) has an inner diameter of 1.5 mm to 4.5 mm and an outer diameter of 9 mm to 10 mm.

5. The scleral lens for myopia prevention and control according to claim 1, characterized in that: The point diffusion area (13) and the variable vision area (12) are both embedded with a plurality of light diffusion points by laser engraving or lens mold forming.

6. The scleral lens for myopia prevention and control according to claim 5, characterized in that: The light diffusion points are hole-shaped structural members formed in a dot matrix or lattice shape, a hole-shaped structural member formed in a plurality of concentric ring patterns, or a plurality of fan-shaped patterns.

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

8. The scleral lens for myopia prevention and control according to claim 5, characterized in that: The fogging effect reduces retinal contrast by at least 30%.

9. The scleral lens for myopia prevention and control according to claim 5, characterized in that: The point diffusion zone (13) is arranged on the outer surface of the optical zone (1).

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