TWI779275B - Anti-blue light contact lens, composition and manufacturing method thereof - Google Patents

Abstract

An anti-blue light contact lens composition includes at least one hydrogel monomer, a yellow dye, a blue pigment, a cross-linking agent, and a photoinitiator. The invention also provides a manufacturing method of preparing an anti-blue light contact lens, which includes providing a mold comprising a male mold and a female mold; preparing an anti-blue light contact lens composition which comprises a yellow dye and a blue pigment; injecting the composition into the female mold, combining the male mold and the female mold and performing pressing; performing light curing and forming a lens body; and performing hydration and forming a contact lens. The invention also provides an anti-blue light contact lens comprising the composition mentioned above, which has a transmittance of more than 75% for light with a wavelength of 380 to 460 nm and a transmittance of more than 85% for light with a wavelength of 380 to 780 nm.

Description

Anti-blue light contact lens, its composition and preparation method

The present invention relates to an anti-blue light contact lens, its composition and preparation method, in particular to a contact lens with both anti-blue light function and aesthetic effect, its composition and preparation method.

With the rapid development of science and technology, 3C and electronic products have almost become indispensable necessities of modern life. However, blue light is emitted from LED lights and the screens of tablet computers, TVs, and smartphones. When using 3C products, it is inevitable that the eyes will look directly at the blue light emitted by the screen. Blue light is the most energy-intensive part of visible light that is closest to ultraviolet light waves, with a wavelength between 380nm and 530nm. Its wavelength is shorter, it will focus in front of the retina in advance, and it is easy to cause scattering. Therefore, the eyes need to focus harder and it is difficult to relax. After a long time, it will easily lead to a decrease in the image contrast and clarity of the eyes, and increase eye fatigue.

In recent years, a number of studies have shown that blue light can increase the sensitivity of visual cells to light and photooxidative reactions leading to cell death, which can affect vision in the slightest and cause damage to retinal cells in severe cases, especially the macula with high light sensitivity. damage.

After entering the eyes, blue light will not be absorbed by the cornea and lens, but can penetrate the cornea and lens directly into the macula. If too much blue light is absorbed, the eyes will have symptoms such as tingling and photophobia in the early stage, and in the long run, the macula will become inflamed and edematous, and a hidden knot may form in the center of the macula. once hidden Bleeding from ruptured knots can cause central vision loss, making it impossible to see clearly. In the past, macular degeneration was more likely to occur in the elderly. However, with the change of life and the increase of blue light stimulation, the age group of the disease has a downward trend. Anti-blue light has become an important issue.

For the various problems caused by the aforementioned blue light, in addition to minimizing blue light exposure, the current more active solution is to wear anti-blue light glasses. Existing commercially available anti-blue light glasses are glasses worn on the outside of the eyes, which are mainly made by coating a layer of anti-blue light coating on the glass or plastic lens, and then assembling the glass or plastic lens on the frame. However, in actual use, due to the distance between the glasses worn outside the eyes and the eyes, the blue light may not pass through the glasses and enter the wearer's eyes, so there is still a possibility of directly entering the wearer's eyes. Therefore, the existing commercially available anti-blue light glasses cannot completely block blue light, and cannot provide anti-blue light protection for groups who are accustomed to wearing contact lenses.

Therefore, if an anti-blue light effect can be added to contact lenses attached to the surface of the eyeball, it should be more helpful in blocking blue light and protecting the wearer's eyes. In this regard, as disclosed in the Republic of China Patent No. M487455, "colored contact lenses with blue light filtering and anti-UV functions", it is composed of upper, middle and lower lenses, and the blue light filtering coating agent in the upper lens is used to achieve reduction. Blue light enters the eyes, but this kind of contact lenses is not only time-consuming, labor-intensive and cost-consuming, but also has the risk of harming the eyes.

The invention provides an anti-blue light contact lens composition, which is suitable for preparing contact lenses with anti-blue light function, avoiding visual fatigue of wearers, avoiding visual chromatic aberration, and improving the aesthetic effect.

The present invention also provides a method for preparing an anti-blue light contact lens composition, which is suitable for preparing contact lenses with both anti-blue light function and aesthetics.

The present invention also provides an anti-blue light contact lens, which has an anti-blue light function and is beautiful, and helps to improve the wearer's use experience.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

In order to achieve one or part or all of the above purposes or other purposes, the anti-blue light contact lens composition provided by the present invention includes at least one hydrocolloid monomer, a yellow dye, a blue pigment, a crosslinking agent and a photoinitiator, Wherein the content of the yellow dye and the blue pigment accounts for 0.01wt% to 1wt% of the composition.

In an embodiment of the present invention, the above-mentioned yellow dye includes a reactive yellow dye, the blue pigment includes phthalocyanine blue 15, and the content ratio of the yellow dye to the blue pigment is 11:1˜7:1.

In one embodiment of the present invention, the above-mentioned at least one hydrocolloid monomer contains a hydrophilic molecule of an unsaturated hydrocarbon group, and is acrylic acid, methacrylic acid, N-vinylpyrrolidone, hydroxyalkyl (meth)acrylate, di Hydroxyalkyl (meth)acrylate, 2-hydroxyethyl methacrylate or a combination thereof, and the content of at least one hydrocolloid monomer is 50wt% to 99wt%.

In one embodiment of the present invention, the above-mentioned crosslinking agent is ethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, diethylene glycol dimethacrylate, polyethylene glycol dimethacrylate methacrylate, trimethylolpropane trimethacrylate, pentaerythritol tetramethacrylate, bisphenol A dimethacrylate, vinyl methacrylate or a combination thereof, and the content of the crosslinking agent is 0.01wt% to 2.5wt%.

In one embodiment of the present invention, the above photoinitiator is bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, benzoin ethyl ether, phenyl dimethyl ketal, α, α-diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenyl-1-propanone or a combination thereof, and the content of the photoinitiator is 0.01wt% to 2.5wt%.

In one embodiment of the present invention, the above-mentioned composition further comprises an ultraviolet light absorber, and the ultraviolet light absorber is 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl 2-methacrylate, 2,2',4,4'-tetrahydroxybenzophenone or a combination thereof, and the content of the ultraviolet light absorber is 0.01wt% to 1.5wt%.

In order to achieve one or part or all of the above-mentioned purposes or other purposes, the preparation method of the anti-blue light contact lens provided by the present invention includes providing a mold, and the mold includes a male mold and a female mold; preparing an anti-blue light contact lens composition, And the composition includes yellow dye and blue pigment; the composition is injected into the master mold, and then the male mold and the master mold are pressed together; light-cured to form a lens body; and hydrated to form a contact lens.

In an embodiment of the present invention, the inner surface of the above-mentioned master mold is pad-printed with color patterns.

In an embodiment of the present invention, the above-mentioned step of preparing the anti-blue light contact lens composition further includes mixing at least one hydrocolloid monomer, a yellow dye, a blue pigment, a crosslinking agent, and a photoinitiator.

In an embodiment of the present invention, the step of preparing the anti-blue light contact lens composition further includes mixing at least one hydrocolloid monomer, a yellow dye, a blue pigment, a crosslinking agent, a photoinitiator, and an ultraviolet absorber.

In an embodiment of the present invention, the step of photocuring and forming the lens body further includes irradiating the composition in the master mold with ultraviolet light, so that the composition undergoes photopolymerization and forms the lens body.

In an embodiment of the present invention, the above-mentioned method further includes removing the male mold and leaving the lens body in the female mold for hydration and forming a contact lens.

In an embodiment of the present invention, the step of hydrating to form a contact lens further includes performing hydration at a temperature of 40-100° C. to form a contact lens.

In an embodiment of the present invention, the above method further includes sterilizing the contact lens.

In an embodiment of the present invention, the step of sterilizing includes soaking the contact lens in a buffer solution and sterilizing at high temperature.

In order to achieve one or part or all of the above purposes or other purposes, the anti-blue light contact lens provided by the present invention comprises the aforementioned composition, and has a transmittance greater than 75% for light with a wavelength of 380 to 460 nm, and has a transmittance of more than 75% for light with a wavelength of It has more than 85% transmittance to 780nm light.

In an embodiment of the present invention, the above-mentioned anti-blue contact lens has a green, blue-green or blue tint.

Because the present invention includes a yellow dye, it can absorb visible light with a wavelength in the blue light range, which helps reduce the amount of high-energy light transmitted to the eyes, and reduces the chance of eye fatigue, vision loss or visual cell damage. The present invention contributes to imparting an appropriate hue to the blue light blocking contact lens, the blue light blocking contact lens made with the composition, or the blue light blocking contact eye made with the method, by including a blue pigment , improve the appearance of the glasses and the wearer's experience.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

FIG. 1 is a flowchart of a method for preparing an anti-blue light contact lens according to an embodiment of the present invention.

FIG. 2 is a graph showing the relationship between light wavelength and transmittance of an anti-blue light contact lens according to an embodiment of the present invention.

3 is a graph showing the relationship between light wavelength and transmittance of a control group of anti-blue light contact lenses according to an embodiment of the present invention.

4A-4B are schematic diagrams of the appearance of the anti-blue light contact lens and the control group according to an embodiment of the present invention.

The present invention provides a composition of an anti-blue light contact lens, which comprises at least one hydrogel monomer, a yellow dye, a blue pigment, a crosslinker and a photoinitiator.

Hydrocolloid monomers make up the lens body of the contact lens, which impart mechanical strength to the lens body, and can affect the water content of the formed contact lens. Lens bodies formed from different hydrocolloid monomers can have different moisturizing properties. The hydrocolloid monomer is polymerized to form the lens body. In the embodiment of the present invention, the hydrocolloid monomer can be any monomer capable of photopolymerization and used in the lens body of the contact lens. Preferably, the hydrogel monomer in the embodiment of the present invention contains a hydrophilic molecule with an unsaturated hydrocarbon group such as acrylic acid, methacrylic acid (methacrylic acid, MAA), N-vinyl pyrrolidone (N-vinyl pyrrolidone), hydroxyalkane Base (meth)acrylate, dihydroxyalkyl (meth)acrylate, 2-hydroxyethyl methacrylate (2-hydroxyethyl methacrylate, HEMA) or a combination thereof, but not limited thereto. In one embodiment, two or more hydrocolloid monomers such as 2-hydroxyethyl methacrylate (HEMA) and methacrylic acid (MAA) are used to form the lens body. The content of the hydrocolloid monomer accounts for 50wt% to 99wt% of the anti-blue light contact lens composition. In other embodiments, a hydrocolloid monomer capable of forming the lens body through thermal polymerization can be selected.

The hydrocolloid monomer can form the lens body through photopolymerization in the presence of the crosslinking agent and the photoinitiator. The cross-linking agent can use any cross-linking agent used in the preparation of contact lenses, and can be selected according to the hydrocolloid monomer used. The cross-linking agent of the embodiment of the present invention is for example ethylene glycol Dimethacrylate (ethylene glycol dimethacrylate, EGDMA), tetraethylene glycol dimethacrylate (tetraethylene glycol dimethacrylate), diethylene glycol dimethacrylate (diethylene glycol dimethacrylate), polyethylene glycol dimethyl Acrylate (polyethylene glycol dimethacrylate), trimethylolpropanetrimethacrylate (trimethylolpropanetrimethacrylate, TMPTMA), pentaerythritol tetramethacrylate (penterythritoltetramethacrylate), bisphenol A dimethacrylate (bisphenol A dimethacrylate), methyl Vinyl methacrylate or combinations thereof. The content of the crosslinking agent preferably accounts for 0.01wt% to 2.5wt% of the anti-blue light contact lens composition.

The photoinitiator can use any photoinitiator used in the preparation of contact lenses, and can be selected according to the hydrocolloid monomer used. The photoinitiator of the embodiment of the present invention is, for example, bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide (bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide), benzoin ether (benzoin ethyl ether), benzyl dimethyl ketal, α,α-diethoxyacetophenone (α,α-diethoxyacetophenone), 2-hydroxy-2-methyl-1-phenyl- 1-acetone (2-Hydroxy-2-methylpropiophenone) or a combination thereof. The content of the photoinitiator preferably accounts for 0.01wt% to 2.5wt% of the anti-blue light contact lens composition.

The yellow dye in the embodiment of the present invention is a reactive yellow dye (Reactive Yellow 15), but it is not limited thereto, and one or more other yellow dyes and yellow pigments can also be used. Reactive yellow dyes are ethylene-based reactive dyes with good water solubility, and have obvious absorption peaks in the visible light wavelength range of about 390-430nm, which can effectively block blue light. The blue pigment in the embodiment of the present invention is Phthalocyanine Blue 15 (Phthalocyanine Blue 15), but it is not limited thereto, and one or more other blue pigments and blue dyes can also be used. Blue pigments help to adjust the tint of formed contact lenses. Compared with the yellow tint of contact lenses formed by using only yellow dye, contact lenses containing yellow dye and blue pigment appear slightly green and blue Green or blue tint. The blue pigment does not affect the absorption of blue light wavelengths by the yellow dye, and the green, blue-green or blue tint of the contact lens can help the wearer avoid visual fatigue, avoid visual chromatic aberration, and help improve the aesthetic effect. The content of the yellow dye and the blue pigment preferably accounts for 0.01wt% to 1wt% of the anti-blue light contact lens composition. The ratio of the yellow dye to the blue pigment is optional, but the amount of the yellow dye is preferably more than that of the blue pigment. The ratio of the yellow dye to the blue pigment is, for example, 11:1 to 7:1. In one embodiment, for example, 0.14 g of yellow dye and 0.02 g of blue pigment are used.

The composition of the anti-blue light contact lens may further include an ultraviolet light absorber (UV blocker). The ultraviolet light absorber can use any ultraviolet light absorber used in the preparation of contact lenses, and can be selected according to the hydrocolloid monomer used. The ultraviolet absorber of the embodiment of the present invention is, for example, 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl 2-methacrylate (2-[3-( 2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate), 2,2',4,4'-tetrahydroxybenzophenone (2,2',4,4'-Tetrahydroxybenzophenone) or a combination thereof. The content of the ultraviolet light absorber preferably accounts for 0.01wt% to 1.5wt% of the anti-blue light contact lens composition.

The present invention also provides a method for preparing an anti-blue light contact lens, comprising steps S910-S950. Please refer to FIG. 1 , step S910 is to provide a mold, and the mold includes a male mold and a female mold. The mold can be an injection molded optical mold, wherein the inner surface of the master mold can be printed with patterns, and the patterns are preferably colored. Step S920 is preparing an anti-blue light contact lens composition (hereinafter referred to as composition). The composition includes the aforementioned components, namely at least one hydrocolloid monomer, yellow dye, blue pigment, crosslinking agent and photoinitiator, and preferably includes an ultraviolet absorber.

Implementation mode 1:

In embodiment 1, compositions 1-6 are prepared according to step S920, and a control group (control group 1) is prepared separately. The contents of each component of compositions 1-6 and control group 1 are shown in Table 1. The difference between control group 1 and compositions 1-6 lies in the content of yellow dye and blue pigment.

需注意的是，在表1中，黃色染料與藍色顏料的總量隨組合物1~6之順序遞增，且較佳黃色染料的量隨組合物1~6之順序遞增。藍色顏料的量亦可遞增，惟本發明實施例不對此作限制。組合物1~6可含相同量之藍色顏料。

It should be noted that in Table 1, the total amount of the yellow dye and the blue pigment increases in the order of compositions 1-6, and the amount of the preferred yellow dye increases in the order of compositions 1-6. The amount of the blue pigment can also be increased, but the embodiments of the present invention are not limited thereto. Compositions 1-6 can contain the same amount of blue pigment.

Next, step S930 will be introduced. Step S930 is to inject the composition into the female mold, and then press the male mold and the female mold together. The pressing conditions can be based on known methods, which are not limited in the embodiments of the present invention. Step S940 is to perform photocuring and form the lens body. In the embodiment of the present invention, step S940 may further irradiate the composition containing the hydrocolloid monomer with ultraviolet light to perform photopolymerization to form a dry lens body. Illumination conditions can be determined by, for example, the wavelength of the light source, for example, the illumination time can be determined by the ultraviolet light of 385 nm, but the embodiment of the present invention is not limited thereto. Step S950 is to hydrate and form a contact lens.

Before hydration, the male mold can be removed, leaving the lens body in the female mold. When step S950 is performed, the master mold and the lens body can be placed in a hydration tank for heating and hydration to form a wet lens body, that is, a contact lens. Contact lenses can then be sterilized. For example, the contact lens obtained in step S950 can then be put into a packaging cup, filled with a buffer solution, and then packaged for sterilization. The buffer may be PBS buffer, including Na ₂ HPO ₄ , KH ₂ PO ₄ , NaCl, KCl or a combination thereof, but not limited thereto. For example, a boric acid-based buffer may also be used. Since the inner surface of the master mold provided in step S910 can be printed with color patterns, in steps S930-S940, the color patterns are combined with the composition, and in step S950, the color patterns leave the master mold with the hydration of the lens body. The resulting contact lens can thus have a colored pattern on the surface.

Implementation mode 2:

In Embodiment 2, the compositions 1-6 of Embodiment 1 are respectively used in steps S930-S950 and sterilized to form anti-blue light contact lens samples 1-6. The control group (control group 1) was also treated under the same conditions to make contact lenses for the control group (control group 1). The parameters used in Embodiment 2 are shown in Table 2.

It should be noted that in Embodiment 2, the compositions 1-6 are made into contact lenses under the same conditions. However, it is known that in steps S930~S950 and sterilization, other steps can also be used Conditions such as photocuring time, hydration temperature or buffer solution treatment compositions 1-6 are different from those in Table 2. In addition, the parameters listed in Table 2 can also be used for compositions other than compositions 1-6.

For the samples 1-6 obtained in Embodiment 2 and the control group (control group 1), the light transmittance can be further tested, and the results are shown in Figures 2-3 and Table 3.

As shown in Figures 2-3, both the anti-blue light contact lens and the contact lens of the control group (control group 1) can resist ultraviolet light. The transmittance (T%) of the wavelength below 380nm approaches zero. However, blue light blocking contact lenses were also blue light resistant compared to the control group (control group 1). As shown in FIG. 2 , the anti-blue light contact lens allows visible light to pass through, and can reduce the transmittance of visible light in the blue light wavelength range. In the embodiment of the present invention, the anti-blue light contact lens allows the transmittance of light with a wavelength of 380 to 780nm to be greater than 88%, and the transmittance of light with a wavelength of 380 to 460nm to be greater than 75%. The blue light transmittance or anti-blue light rate is roughly affected by the yellow dye contained in the composition. In one embodiment of the present invention, 0.14wt% yellow dye can achieve the effect of making the transmittance of light with a wavelength of 380-780nm greater than 88%, and the transmittance of light with a wavelength of 380-460nm greater than 75%. In contrast, the Control 1 contact lenses passed most of the light energy at blue wavelengths, blocking only about 3% of blue light.

As shown in Tables 2-3, the greater the proportion of yellow dye and blue pigment, the higher the anti-blue light rate of the sample. Anti-blue light containing 0.07~0.20wt% yellow dye and blue pigment The contact lens allows the transmittance of light with a wavelength of 380 to 780nm to be greater than 85%, and allows the transmittance of light with a wavelength of 380 to 460nm to be greater than 70%.

Implementation mode 3:

In embodiment 3, the composition 7 is prepared according to step S920, and a control group (control group 2) is also prepared. The yellow dye contained in composition 7 accounts for 0.13wt% of its total weight, and the blue pigment is added according to the ratio of yellow dye to blue pigment of 7:1. Control 2 also contained 0.13 wt% yellow dye, but no blue pigment. Then according to steps S930-S950, the composition 7 and the control group 2 were made into anti-blue light contact lens sample 7 and the control group (control group 2) contact lenses respectively, and their appearances were observed. The results are shown in FIGS. 4A-4B .

The left side of Figure 4A is a commercially available anti-UV water blue contact lens (control group 3), and the right side is an anti-blue light contact lens (sample 7). The left side of Fig. 4B is the contact lens of the control group (control group 2), and the right side is sample 7. The components of the contact lenses of sample 7 and the control group (control group 2) were as described above. Control group 3 contains anti-ultraviolet light components, but does not have dye components for anti-blue light wavelengths, so it is bluish, bluish-purple or slightly purple in color without yellowish tint. As shown in FIGS. 4A-4B , the contact lens of the control group (control group 2) had a yellow tint obviously, while the sample 7 was slightly greenish under the same yellow dye content.

To sum up, the embodiments of the present invention not only have the effect of preventing blue light, but also in appearance, the anti-blue light contact lens presents a green, blue-green or blue tone, which is close to the natural color of the white of human eyes. The tint of the anti-blue light contact lens makes it more "invisible" when worn, and also helps to avoid visual fatigue and chromatic aberration of the wearer, and helps to improve the aesthetic effect.

The present invention also provides an anti-blue contact lens, which contains a yellow dye and a blue pigment, or comprises the aforementioned compositions such as compositions 1-7 and/or is prepared from compositions 1-7. The yellow dye and the blue pigment are as described above. Alternatively, the anti-blue light contact lens is prepared by the aforementioned method. By containing a yellow dye, anti-blue contact lenses reduce the transmission of visible light in the blue wavelength range.

In one embodiment, the anti-blue light contact lens has a transmittance greater than 75% for blue light with a wavelength of 380 to 460nm, and has a transmittance greater than 85% for light with a wavelength of 380 to 780nm, thus allowing visible light to pass through without prevents the wearer from seeing while helping to reduce the amount of high-energy light transmitted to the eyes. Because of the blue pigment, the anti-blue light contact lenses have a green, blue-green or blue tint, which is close to the natural color of the white of the human eye, which is more beautiful and helps to improve the wearer's experience.

Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field of the present invention can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (14)

An anti-blue light contact lens composition, comprising at least one hydrocolloid monomer, a yellow dye, a blue pigment, a crosslinking agent and a photoinitiator, wherein: the at least one hydrocolloid monomer contains an unsaturated hydrocarbon group Hydrophilic molecules, and the content is 50wt% to 99wt%; the yellow dye contains vinyl phosphine-type reactive dyes, the blue pigment contains phthalocyanine blue 15, and the content ratio of the yellow dye to the blue pigment is 11:1~ 7:1, and the content of the yellow dye and the blue pigment accounts for 0.01wt% to 1wt% of the composition; the content of the crosslinking agent is 0.01wt% to 2.5wt%; and the content of the photoinitiator is 0.01wt% to 2.5wt%. The anti-blue light contact lens composition as described in claim 1, wherein the at least one hydrocolloid monomer contains a hydrophilic molecule of an unsaturated hydrocarbon group, and is acrylic acid, methacrylic acid, N-vinylpyrrolidone, hydroxyalkyl (methyl ) acrylates, dihydroxyalkyl (meth)acrylates, 2-hydroxyethyl methacrylates, or combinations thereof. The anti-blue light contact lens composition as described in claim item 1, wherein the crosslinking agent is ethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, diethylene glycol dimethacrylate, poly Ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, pentaerythritol tetramethacrylate, bisphenol A dimethacrylate, vinyl methacrylate, or combinations thereof. The anti-blue light contact lens composition as described in Claim 1, wherein the photoinitiator is bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, benzoin ethyl ether, phenyldimethyl Ketal, α,α-diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenyl-1-propanone or combinations thereof. The anti-blue light contact lens composition as described in Claim 1 further comprises a UV absorber, and the UV absorber is 2-[3-(2H-benzotriazol-2-yl)-4-hydroxybenzene base] ethyl 2-methacrylate, 2,2',4,4'-tetrahydroxybenzophenone or a combination thereof, and the content of the ultraviolet light absorber is 0.01wt% to 1.5wt%. A method for preparing an anti-blue light contact lens, comprising: providing a mold, the mold including a male mold and a female mold; preparing the anti-blue light contact lens composition as described in any one of claims 1 to 5; Injecting the female mold, then pressing the male mold with the female mold; performing photocuring to form a lens body; and performing hydration to form a contact lens. The method for preparing anti-blue light contact lenses according to claim 6, wherein the internal surface of the master mold is printed with color patterns. The method for preparing anti-blue light contact lenses as described in Claim 6, wherein the step of photocuring and forming the lens body further includes irradiating the composition in the master mold with ultraviolet light, so that the composition undergoes photopolymerization And form the lens body. The method for preparing anti-blue light contact lenses as described in claim 6 further includes removing the male mold and leaving the lens body in the master mold for hydration and forming the contact lens. The method for preparing an anti-blue light contact lens according to Claim 6, wherein the step of hydrating and forming the contact lens further comprises hydrating at a temperature of 40-100° C. to form the contact lens. The preparation method of the anti-blue light contact lens as described in Claim 6 further includes sterilizing the contact lens. The method for preparing anti-blue light contact lenses according to claim 11, wherein the step of sterilizing comprises soaking the contact lenses in a buffer solution and sterilizing at high temperature. An anti-blue light contact lens, comprising the composition described in any one of Claims 1 to 5, and having a transmittance greater than 75% and less than 90% for blue light with a wavelength of 380 to 460nm, and for light with a wavelength of 380 to 780nm It has a penetration rate greater than 85%. The anti-blue light contact lens as described in Claim 13 has green, blue-green or blue tint.

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