Corneal contact lens

Abstract

A corneal contact lens comprises a body, marks and lines, the outline of the front face of the body is circular, the body is provided with a first area, a second area and a third area, the first area is an optical area, the second area surrounds the first area, the third area surrounds the second area, the marks are arranged in the third area, and the lines are arranged in the second area; the side face of the body is in an arc shape with curvature. According to the corneal contact lens, the front face, the back face and the axial direction of the corneal contact lens can be easily identified, and marks cannot be shielded by lines or the lines cannot be damaged.

Description

[0001] This application claims priority to a Taiwan patent filed on August 21, 2024, application number 113209040, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This utility model relates to a vision correction device, and more particularly to a corneal contact lens. Background Technology

[0003] In recent years, the development of contact lenses has been rapid, with a wide variety of contact lenses available on the market for users to choose from based on different uses. These include spherical contact lenses for vision correction, astigmatism correction, multifocal contact lenses, and cosmetic contact lenses. If the texture on the contact lens is removed, the lens itself is essentially transparent and colorless, making it difficult for users to clearly distinguish the front and back, and the axis of the lens. Therefore, adding markings to the surface of the contact lens helps users identify the front and back, and the axis. However, conventional contact lens markings often face the problem of being obscured by the texture or disrupting the design of the texture, which urgently needs to be addressed by the industry. Utility Model Content

[0004] This invention provides a corneal contact lens that allows for easy identification of the front and back sides and axis of the lens, and the markings are not obscured or damaged by the texture design.

[0005] To achieve one or more of the above-mentioned objectives or other objectives, an embodiment of the present invention provides a corneal contact lens, including a body, a marking, and a texture. The front of the body has a circular outline and has a first region, a second region, and a third region. The first region is an optical zone, the second region surrounds the first region, the third region surrounds the second region, the marking is disposed in the third region, and the texture is disposed in the second region. The side of the body is an arc with curvature.

[0006] In one embodiment of this utility model, the aforementioned body has a center, and the distance between any point in the third region and the center is more than 90% of the radius of the body.

[0007] In one embodiment of the present invention, the body has opposing inner and outer surfaces, and the marking is recessed from the outer or inner surface, with the marking having a depth between 0.01 mm and 0.05 mm.

[0008] In one embodiment of this utility model, the vertical projection of the above-mentioned mark on the inner or outer surface is a circle.

[0009] In one embodiment of the present invention, the above-mentioned mark includes two sub-markers arranged opposite each other, and the central angle between the two sub-markers is between 175 degrees and 185 degrees.

[0010] In one embodiment of this utility model, the above-mentioned mark includes three sub-marks. The sub-marks are provided within a central angle range of 6 to 10 degrees on the main body, and adjacent sub-marks have a central angle of 3 to 5 degrees.

[0011] In one embodiment of this utility model, the aforementioned texture is disposed between the inner surface and the outer surface.

[0012] Because this invention uses a mark set in the third area, the front and back sides and axis of the corneal contact lens can be easily identified, and the mark will not be obscured by the texture or the design of the texture will be destroyed.

[0013] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a top view schematic diagram of a corneal contact lens according to an embodiment of the present invention.

[0015] Figure 2 For along Figure 1 A cross-sectional diagram of the BB section line.

[0016] Figure 3 This is a top view schematic diagram of another embodiment of the corneal contact lens of this utility model. Detailed Implementation

[0017] Figure 1 This is a top view schematic diagram of a corneal contact lens according to an embodiment of the present invention. Figure 2 For along Figure 1 A cross-sectional diagram of the BB section line. Please refer to... Figure 1 and Figure 2 The corneal contact lens 100 of this embodiment includes a body 101, a mark 102, and a texture 103. The front outline of the body 101 is circular. The body 101 has a first region A1, a second region A2, and a third region A3. The first region A1 is the optical zone, the second region A2 surrounds the first region A1, and the third region A3 surrounds the second region A2. The mark 102 is disposed in the third region A3, and the texture 103 is disposed in the second region A2. The side of the body 101 is curved.

[0018] Specifically, in this embodiment, the body 101 of the corneal contact lens 100 has, for example, a center C and a radius R, wherein the center C is located, for example, in a first region A1, and the diameter of the body 101 is, for example, between 14.0 mm and 15.0 mm. The first region A1 in this embodiment is an optical region, that is, suitable for allowing light to pass through and enter the pupil. The size of the first region A1 is, for example, equal to or slightly larger than the pupil (not shown in the figure), and the diameter of the first region A1 is, for example, between 5.0 mm and 10.0 mm, but this invention does not impose specific limitations on this. In this embodiment, the first region A1 is, for example, circular, and the second region A2 and the third region A3 are, for example, annular, and the centers of the second region A2 and the third region A3 overlap with the center C, but this invention is not limited thereto. Furthermore, in this embodiment, the distance S from any point in the third region A3 to the center C is, for example, more than 90% of the radius R of the body 101, that is, the distance S is greater than or equal to 0.9 times the radius R. The third region A3 is located, for example, at the edge of the corneal contact lens 100, and the second region A2 is located between the first region A1 and the third region A3.

[0019] Please refer to Figure 2 In this embodiment, the body 101 has, for example, an inner surface 111 and an outer surface 112, and a mark 102 is provided on either the inner surface 111 or the outer surface 112. The inner surface 111 is, for example, the surface of the contact lens 100 facing the eyeball when worn on the eye. In this embodiment, the mark 102 is provided on the outer surface 112.

[0020] In one embodiment of this invention, the texture 103 is disposed, for example, between the inner surface 111 and the outer surface 112, that is, the texture 103 is disposed, for example, inside the corneal contact lens 100, so that the texture 103 does not come into direct contact with the eye. The texture 103 is, for example, a radial pattern and may have multiple colors, which can be used to beautify the iris. This invention does not impose specific limitations on the pattern and color of the texture 103.

[0021] In one embodiment of the present invention, the marking 102 and the texture 103 of the corneal contact lens 100 are respectively set in the third region A3 and the second region A2. That is, the marking 102 and the texture 103 will not overlap, so that the marking 102 will not be covered by the texture 103, and the marking 102 will not destroy the design of the texture 103.

[0022] On the other hand, in one embodiment of the present invention, the mark 102 may be recessed from the inner surface 111 or from the outer surface 112. Figure 2In the illustrated embodiment, the mark 102 is, for example, provided on and recessed from the outer surface 112, but the present invention is not limited thereto. In another embodiment, the mark 102 may be provided on and recessed from the inner surface 111 (not shown). Because the mark 102 of one embodiment of the present invention is recessed from the inner surface 111 or the outer surface 112, it helps to easily identify the front and back sides and axis of the corneal contact lens 100.

[0023] The marking 102 in this embodiment has a depth D between 0.01 mm and 0.05 mm, for example, 0.03 mm, but the present invention does not specifically limit this. In another embodiment, the marking 102 may be raised above the outer surface 112 (not shown). It should be noted that in the embodiment where the marking 102 is raised above the outer surface 112, the marking 102 also makes the front and back sides and axis of the corneal contact lens 100 easily identifiable.

[0024] In this embodiment, the vertical projection of the mark 102 onto the inner surface 111 or the outer surface 112 is, for example, a circle, but this invention does not impose a specific limitation on this. In other embodiments of this invention, the vertical projection of the mark 102 onto the inner surface 111 or the outer surface 112 may also be other shapes, such as square, ellipse, etc. (not shown in the figure).

[0025] In one embodiment of this utility model, the mark 102 includes, for example, two sub-markers 1021 arranged opposite to each other, such as... Figure 1 As shown, the central angle θ1 between the two sub-markers 1021 is, for example, between 175 degrees and 185 degrees, or for example, 180 degrees. However, this invention does not impose specific limitations on the number or location of the sub-markers. Please refer to... Figure 3 The corneal contact lens 100a is similar to the corneal contact lens 100, the main difference being that the marking 102a is different from the marking 102. Specifically, in this embodiment, the marking 102a of the corneal contact lens 100a includes, for example, three sub-markers 1022. The central angle θ2 of the body 101 is provided with sub-markers 1022 in the range of 6 to 10 degrees, for example, and adjacent sub-markers 1022 have a central angle θ3 of 3 to 5 degrees, for example, as shown. Figure 3 As shown, but this utility model does not impose any specific limitations on this.

[0026] In summary, the corneal contact lens of this invention uses a mark set in the third region, which makes it easy to identify the front and back of the corneal contact lens and its axis, and the mark will not be obscured by the texture or the design of the texture will be destroyed.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the methods and techniques disclosed above without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A contact lens, characterized by, The body has a circular contour on the front surface, and the body has a first area, a second area and a third area, wherein the first area is an optical area, the second area surrounds the first area, and the third area surrounds the second area; the mark is arranged on the third area, and the texture is arranged on the second area; the side surface of the body is an arc with a curvature.

2. The contact lens of claim 1, wherein, The body has a center, and the distance between any point of the third area and the center is more than 90% of the radius of the body.

3. The contact lens of claim 1, wherein, The body has an inner surface and an outer surface, the mark is recessed from the outer surface or the inner surface, and the mark has a depth of 0.01 mm to 0.05 mm.

4. The contact lens of claim 3, wherein, The vertical projection of the mark on the inner surface or the outer surface is circular.

5. The contact lens of claim 1, wherein, The mark includes two oppositely arranged sub-marks, and the central angle between the two sub-marks is 175 degrees to 185 degrees.

6. The contact lens of claim 1, wherein, The mark includes three sub-marks, the two sub-marks are arranged within a central angle of 6 degrees to 10 degrees of the body, and the two adjacent sub-marks have a central angle of 3 degrees to 5 degrees.

7. The contact lens of claim 1, wherein, The body has an inner surface and an outer surface, and the texture is arranged between the inner surface and the outer surface.

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