Silicone hydrogel contact lens

Abstract

The utility model discloses a silicone hydrogel contact lens which comprises a lens body, a ring tangent plane is arranged on the outer end surface of the front face of the lens body, the outer surface of the front face of the lens body is coated with an anti-ultraviolet coating and an anti-blue light coating, and the outer surface of the front face of the lens body and the inner end surface of the lens body are both coated with antibacterial coatings. The protective coating is arranged on the surface to protect eyes, and the outer layer is of the annular section structure, so that the whole contact lens can be cut to be lighter and thinner, and the eyes are not easy to wear.

Description

Technical Field

[0001] This utility model relates to the field of silicone hydrogel contact lenses, and more specifically, to a silicone hydrogel contact lens. Background Technology

[0002] Contact lenses are special lenses that come into direct contact with the cornea of ​​the eye to correct vision or enhance eye appearance. With the increasing number of people with myopia, more and more people are choosing to wear contact lenses, a product that can correct vision without affecting normal activities. Contact lenses on the market are divided into ordinary hydrogel contact lenses and silicone hydrogel contact lenses. However, the oxygen permeability of ordinary hydrogel contact lenses depends on their water content; the higher the water content, the better the oxygen permeability, but this also means that the lens may absorb more tears, leading to dry eyes. Silicone hydrogel contact lenses, on the other hand, have far superior oxygen permeability than ordinary hydrogel lenses. Silicon, as the main component of the material, has a very high oxygen permeability, allowing oxygen to more easily penetrate the lens and reach the cornea. This high oxygen permeability helps reduce the risk of red eyes and corneal hypoxia, making them particularly suitable for long-term wear.

[0003] In existing contact lenses, such as the one disclosed in this utility model (CN204044450U), a solution is provided to address the problem of poor permeability leading to eye hypoxia, redness, and other ailments. This utility model's contact lens includes a lens body that adheres to the surface of the eyeball and conforms to its curvature. The lens body has several microchannels with a depth of 800μm to 1.5mm and a width of 1000μm to 1mm, closely adhering to the surface of the eyeball. The depth of the microchannels is less than the thickness of the lens body, and the microchannels are connected to the internal voids of the lens body material to facilitate the flow of various forms of substances on the lens body and to complete the transport, delivery, and exchange of substances. This utility model's contact lens has high permeability, enhances the flow of substances between the eyeball and the lens body, and is less likely to cause eye hypoxia, resulting in redness, swelling, and other ailments.

[0004] The aforementioned patent describes a groove structure on the inner end of the glasses, which requires an increase in the thickness of the edges of the glasses, affecting wearing comfort. Furthermore, the groove is close to the eyeball, making it prone to wear and tear, which can damage the eyes. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a silicone hydrogel contact lens. The silicone hydrogel contact lens is breathable, comfortable, and keeps the eyes moist. It also has a protective coating on the surface to protect the eyes. The outer layer has a circumferential structure, which allows the overall contact lens to be cut thinner and less likely to abrade the eyes.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A silicone hydrogel contact lens includes a lens with a circumferential cut surface on the outer surface of the front side. The outer surface of the front side of the lens is coated with an anti-ultraviolet coating and an anti-blue light coating. Both the outer and inner surfaces of the front side of the lens are coated with an antibacterial coating. The silicone hydrogel contact lens is breathable, comfortable, and keeps the eyes moist. The protective coating on the surface protects the eyes. The circumferential cut surface structure on the outer layer allows the entire contact lens to be cut thinner and lighter, making it less likely to abrade the eyes.

[0008] Furthermore, the circumferential surface is disposed on the outer peripheral surface of the front of the lens, and the junction between the circumferential surface and the lens is rounded.

[0009] Furthermore, the antibacterial coating is a CuII-PCBDA coating.

[0010] Furthermore, the lens is made of silicone hydrogel material.

[0011] Compared with existing technologies, the advantages of this utility model are:

[0012] (1) Silicone hydrogel contact lenses are breathable, comfortable and keep moist. The surface is coated with a protective coating to protect the eyes. The outer layer has a ring-shaped structure, which can make the overall contact lens thinner and less likely to abrade the eyes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0015] Figure 3 This is an enlarged view of section A of this utility model.

[0016] Explanation of the labels in the diagram:

[0017] 1. Lens, 2. Circular cut, 3. Anti-UV coating, 4. Anti-blue light coating, 5. Antibacterial coating. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1

[0020] Please see Figure 1-3A silicone hydrogel contact lens includes a lens 1. The outer surface of the front of the lens 1 has a circumferential cut surface 2. The outer surface of the front of the lens 1 is covered with an anti-ultraviolet coating 3 and an anti-blue light coating 4 (which can block blue light and ultraviolet rays). The outer surface and inner surface of the front of the lens 1 are both covered with an antibacterial coating 5. The silicone hydrogel contact lens is breathable, comfortable and keeps the eyes moist. The protective coating on the surface protects the eyes. The circumferential cut surface structure on the outer layer allows the overall contact lens to be cut thinner and lighter, making it less likely to abrade the eyes.

[0021] The annular surface 2 is set on the outer periphery of the front surface of the lens 1, and the junction of the annular surface 2 and the lens 1 is rounded. The annular surface 2 structure on the periphery does not affect the viewing performance of the eye, and can reduce the overall thickness of the glasses, which reduces weight, makes them more comfortable to wear, less prone to wear and tear, and more comfortable when blinking.

[0022] The antibacterial coating 5 uses a CuII-PCBDA coating (the CuII-PCBDA coating exhibits highly effective and broad-spectrum antibacterial activity against pathogenic bacteria (Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus) and fungi (Candida albicans) associated with microbial keratitis, thereby effectively preventing microbial keratitis. In addition, the coating developed in this study is not only biocompatible, but also maintains the original optical clarity of the CL).

[0023] Lens 1 is made of silicone hydrogel material (silicone hydrogel contact lenses are soft contact lenses made of silicone hydrogel material. Silicone hydrogel is based on hydrogel with the addition of siloxane components, forming a more advanced material. Siloxane gives the lens good oxygen permeability and makes it more durable than hydrogel lenses).

[0024] High oxygen permeability: Silicone hydrogel contact lenses have a high oxygen permeability, allowing more oxygen to pass through the lens to reach the cornea, reducing eye discomfort and complications caused by hypoxia. Long-lasting hydration: Silicone hydrogel material maintains the lens's hydration, reducing dryness, making it particularly suitable for use in dry environments or during prolonged use of electronic devices. Good stability: Silicone hydrogel contact lenses are not easily deformed, maintaining lens fit and visual clarity. Reduced protein deposits: The smooth surface of silicone hydrogel material does not easily attract protein deposits, helping to maintain lens cleanliness and oxygen permeability. Suitable for extended wear: Due to its high oxygen permeability and comfortable hydration, silicone hydrogel contact lenses are suitable for extended wear, reducing eye fatigue.

[0025] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A silicone hydrogel contact lens, comprising a lens (1), characterized in that: The outer end surface of the front of the lens (1) is provided with a circumferential cut surface (2), the outer surface of the front of the lens (1) is covered with an anti-ultraviolet coating (3) and an anti-blue light coating (4), and the outer and inner end surfaces of the front of the lens (1) are covered with an antibacterial coating (5).

2. A silicone hydrogel contact lens according to claim 1, wherein: The circumferential surface (2) is disposed on the outer peripheral surface of the front of the lens (1), and the junction of the circumferential surface (2) and the lens (1) is rounded.

3. The silicone hydrogel contact lens of claim 1, wherein: The antibacterial coating (5) is a CuII-PCBDA coating.

4. The silicone hydrogel contact lens of claim 1, wherein: The lens (1) is made of silicone hydrogel material.

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