Novel anti-blue-light soft hydrophilic contact lens

Abstract

The utility model relates to a novel anti-blue light soft hydrophilic contact lens, which comprises a lens body, a seat support and a forming seat, the lens body comprises an optical area, a base arc area and a side arc area, the thickness of the optical area is smaller than that of the base arc area, and the thickness of the side arc area is smaller than that of the optical area. According to the novel anti-blue-light soft hydrophilic contact lens, the thickness of the optical area is smaller than that of the base arc area, the optical area is a direct vision area of eyes of a user, the thickness of the optical area is small, the influence of the lens body on original display colors and display effects is reduced, the color rendition degree is improved, and the base arc area is located outside the direct vision area of the eyes, so that the color rendition degree is improved. The influence on the display effect of watching an object by a user is small, the thickness of the base arc area is large, the harmful blue light absorption capacity is higher, and the harmful blue light scattered outside the direct vision area of eyes is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of soft hydrophilic contact lenses, in particular to a novel blue light-proof soft hydrophilic contact lens. Background Art

[0002] Soft hydrophilic contact lenses are a type of medical device made of etaflicon A polymer, used for daily correction of refractive errors. The replacement cycle is divided into years, six months, months, days, etc.

[0003] Existing research indicates that blue light poses harmful effects on the human eye, primarily through ocular pathological damage such as myopia, cataracts, and macular degeneration, as well as circadian rhythmic damage. As early as 1966, Nell et al. discovered that exposure to blue light can damage retinal cells, leading to decreased or even complete vision loss. At the 2010 International Association of Optics (IOP) Annual Meeting, leading optical experts worldwide unanimously stated that shortwave blue light, with its extremely high energy, can penetrate the lens and reach the retina. Blue light exposure to the retina generates free radicals, which can cause the cell death of the retinal pigment epithelium. This cell death leads to a lack of nutrients for photosensitive cells, causing irreversible vision loss. Common commercially available soft hydrophilic contact lenses generally lack blue light protection. Those that do offer blue light protection typically have a uniform thickness throughout the lens, significantly affecting the color displayed in the direct viewing area of the eye. This can significantly deviate from the actual color seen by the user, hindering the user's visual experience. Therefore, a new blue light-blocking soft hydrophilic contact lens has been proposed to address these issues. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the present invention provides a new blue light blocking soft hydrophilic contact lens, which improves the color reproduction of the direct viewing area of the eye, reduces the blue light scattered outside the direct viewing area of the eye, and solves the above-mentioned problems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a new type of blue light blocking soft hydrophilic contact lens, comprising a lens body, a seat and a molding seat, wherein the lens body comprises an optical zone, a base curve zone and an edge curve zone, the thickness of the optical zone is less than the thickness of the base curve zone, and the thickness of the edge curve zone is less than the thickness of the optical zone.

[0006] Furthermore, a molding groove is provided inside the molding seat, the volume of the seat support is smaller than the volume of the molding groove, and the lens body can be attached to the seat support.

[0007] Furthermore, the interior of the molding groove is filled with a lens solution, and the lens solution becomes a lens to be turned after solidification, and the lens to be turned becomes a lens body after turning.

[0008] Furthermore, the lens solution is composed of a mixture of hydroxyethyl methacrylate, methacrylic acid, ethylene glycol dimethacrylate, reactive brilliant blue X-BR, reactive bright yellow X-7G and azobisisobutyronitrile, wherein the content of hydroxyethyl methacrylate is 98.55%, the content of methacrylic acid is 0.59%, the content of ethylene glycol dimethacrylate is 0.49%, the content of reactive brilliant blue X-BR is 0.1%, the content of reactive bright yellow X-7G is 0.15%, and the content of azobisisobutyronitrile is 0.12%.

[0009] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0010] The thickness of the optical zone of this new blue light-proof soft hydrophilic contact lens is smaller than that of the base curve zone. The optical zone is the direct view area of the user's eyes. The thickness of the optical zone is thinner, which reduces the influence of the lens body on the original display color and display effect, and improves color reproduction. The base curve zone is located outside the direct view area of the eyes, and has less impact on the display effect of the user's viewing of objects. The thickness of the base curve zone is thicker, and the harmful blue light absorption ability is stronger, reducing the harmful blue light scattered outside the direct view area of the eyes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a partial front view of the exploded structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the front cross-sectional structure of the lens body of the present invention;

[0013] Figure 3 This is a schematic diagram of the top view of the lens body of the utility model;

[0014] Figure 4 This is a schematic diagram of the three-dimensional front view structure of the utility model;

[0015] Figure 5 This is a partial front cross-sectional structural diagram of the utility model in the state where the seat holder and the molding seat are squeezing the lens solution;

[0016] Figure 6 It is a partial front cross-sectional structural diagram of the utility model.

[0017] In the figure: 1. lens body; 101. optical zone; 102. base curve zone; 103. side curve zone; 2. seat; 3. molding seat; 301. molding groove; 4. lens solution; 5. lens to be turned. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-6 , an embodiment provided by the utility model:

[0020] A novel blue light-blocking soft hydrophilic contact lens comprises a lens body 1, a base 2 and a molding base 3. The lens body 1 comprises an optical zone 101, a base curve zone 102 and an edge curve zone 103. The thickness of the optical zone 101 is less than that of the base curve zone 102. The optical zone 101 is the direct viewing area of the user's eyes. The thickness of the optical zone 101 is relatively thin, which reduces the influence of the lens body 1 on the original display color and display effect, and improves color reproduction. The base curve zone 102 is located outside the direct viewing area of the eye and has little influence on the display effect of the user viewing objects. The thickness of the base curve zone 102 is relatively thick, and has a stronger ability to absorb harmful blue light, thereby reducing the harmful blue light scattered outside the direct viewing area of the eye. The thickness of the edge curve zone 103 is less than that of the optical zone 101, thereby improving the wearing comfort of the user.

[0021] Furthermore, the transmittance of the lens body 1 for light (380nm to 780nm) is not less than 97%, which has little effect on the user's ability to see objects.

[0022] Furthermore, the color rendering index of the illumination light after passing through the lens body 1 is not less than 96, which has little effect on the color of objects seen by the user's eyes.

[0023] Furthermore, the relative reduction rate of retinal blue light radiation damage in the 305nm to 780nm spectrum range of the lens body 1 is not less than 10%, and has a good blue light protection effect.

[0024] Furthermore, the nominal refractive index of the lens body 1 is 1.428±0.005, and the water content of the lens body 1 during use is 42%±2%.

[0025] Follow the steps below during use:

[0026] Step 1: drop the lens solution 4 into the molding groove 301 of the molding seat 3, put the seat 2 into the molding groove 301 and squeeze the lens solution 4 (as shown in FIG. Figure 5 As shown), wait for the lens solution 4 to solidify and form and fit on the base 2 (as shown Figure 6 shown);

[0027] Step 2: lathe the lens 5 to be turned to be cut into lens bodies 1 (such as Figure 2 shown).

[0028] In summary, the new blue light blocking soft hydrophilic contact lens improves the color reproduction of the direct viewing area of the eye, reduces the blue light scattered outside the direct viewing area of the eye, and solves the problems raised in the background technology.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel blue light blocking soft hydrophilic contact lens, comprising a lens body (1), a base (2) and a molding base (3), characterized in that: The lens body (1) comprises an optical zone (101), a base curve zone (102) and a side curve zone (103); the thickness of the optical zone (101) is smaller than the thickness of the base curve zone (102); and the thickness of the side curve zone (103) is smaller than the thickness of the optical zone (101).

2. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: A molding groove (301) is provided inside the molding seat (3), the volume of the seat support (2) is smaller than the volume of the molding groove (301), and the lens body (1) can be attached to the seat support (2).

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