Novel anti-blue-light soft hydrophilic contact lens

Abstract

The invention provides a novel anti-blue-light soft hydrophilic contact lens, and relates to the technical field of optical lenses, the contact lens comprises the following parts: a central vision correction area, a vision control area, a myopia prevention and control area, a wearing modification layer, a nanostructure coating, and a passive adaptive layer, the effect of myopia defocus is generated, myopia defocus is generated on the retina, the length of the eye axis can be effectively controlled, and the effect of controlling myopia deepening is achieved. Two shortsightedness prevention and control designs simultaneously appear in a subsequent shortsightedness prevention and control area, a larger defocusing amount can be provided under the condition that the two shortsightedness prevention and control designs are overlapped, different defocusing stimulation effects are given to a wearer, and the shortsightedness control effect of the product is prolonged. In addition, as the subsequently superposed part is relatively far away from the vision correction area, the condition of uncomfortable wearing can be reduced to a certain extent.

Description

Technical Field

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

[0002] In 2020, the overall myopia rate among children and adolescents in my country was as high as 53%, including 36% for primary school students, 71% for junior high school students, and 80% for high school students. Long-term use of the eyes usually causes visual fatigue, and the self-regulation ability of the eyeball decreases, leading to ciliary muscle spasm. The sclera is compressed by the ciliary muscle, resulting in extension of the eye wall, elongation of the eye axis, and ultimately the occurrence of myopia. Experimental and clinical findings show that the retinal peripheral defocus theory is of great significance for the prevention and control of myopia. When the imaging plane is artificially moved to the front of the retina by a positive lens (i.e., myopic defocus), the growth of the eye axis is inhibited, which may inhibit the development of myopia.

[0003] Currently, the main products for controlling myopia on the market include peripheral defocus frame glasses, progressive multifocal glasses, orthokeratology lenses and multifocal soft lenses. The principles of controlling myopia all come from peripheral retinal myopic defocus technology.

[0004] In clinical practice, it is found that the myopia prevention and control solutions currently available on the market are mostly single-face designs, and their myopia prevention and control effects will continue to decline as the user wears them for a longer time. In order to maintain the effect, it is necessary to replace the myopia control product or use multiple myopia control products in combination. Therefore, it is necessary to provide a new solution to extend the myopia control effect of the product during the myopia prevention and control process. The myopia prevention and control effect of products with a single defocus design continues to decline as the user wears them for a longer time, especially for adolescent patients who are in their developmental stage and are more likely to experience the above situation. Summary of the invention

[0005] Technical issues solved In view of the deficiencies of the prior art, the present invention provides a novel blue light blocking soft hydrophilic contact lens, which solves the problems of the prior art.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a new type of blue light blocking soft hydrophilic contact lens, the contact lens comprises the following parts: The central vision correction area is located at the center of the lens and extends outward by a radius of 1.7 mm; A vision control area, which surrounds the central vision correction area in the form of concentric circles, wherein the refractive power of the vision control area is a multi-layered adjustment optical structure, including a superposition of a linear structure and a periodic sinusoidal structure; A myopia prevention and control area, the range of which is 4.5 mm, and the outer surface of the myopia prevention and control area is aspherical; A wearable modification layer, wherein the wearable modification layer has high oxygen conductivity and wettability; Nanostructured coatings that have antibacterial, antifouling and anti-reflective properties, improving lens durability and cleanliness; The passive adaptive layer uses temperature control materials and photochromic materials to automatically adjust the softness and transmittance of the lens according to the ambient temperature and light intensity.

[0008] Preferably, the multi-layered regulating optical structure of the vision control area further comprises: The linear refractive power gradient layer has a radially decreasing refractive power, gradually transitioning from the central vision correction zone to the outside, which is used to reduce the risk of worsening myopia; The periodic sinusoidal refractive power variation layer has a refractive power that changes periodically in a sinusoidal waveform along the radial direction, with a period length of 1.2 mm and a variation range of ±1.50D. The superposition layer superimposes the linear refractive power gradient layer of the contact lens with the periodic sinusoidal refractive power change layer, so that the refractive power distribution of the entire vision control area presents a comprehensive multi-level adjustment effect, thereby optimizing the clarity of the central visual field and the defocus control of the peripheral visual field.

[0009] Preferably, the passive adaptive layer further comprises: A temperature control material, wherein the temperature control material has enhanced softness in a high temperature environment to improve wearing comfort, and restores higher rigidity in a low temperature environment to maintain the shape stability of the lens; Photochromic material, which is used to automatically adjust the light transmittance of the lens according to the ambient light intensity, providing optimal visual comfort and protection; The multi-layer composite structure arranges the temperature control material and the photochromic material in a multi-layer composite structure to ensure that the functions of the two materials do not interfere with each other, while achieving a synergistic adjustment effect and improving the adaptive performance of the lens in various environments.

[0010] Preferably, the contact lens further comprises a drug sustained-release system, wherein a nanoscale drug carrier is integrated on a side of the contact lens close to the eyeball to slowly release anti-myopia drugs to further control the progression of myopia.

[0011] Preferably, the wearing modification layer is made of silicone hydrogel, fluorosilicone hydrogel or other high oxygen permeability polymer materials to ensure that the lens has high oxygen conductivity, reduces the risk of eye hypoxia, and has excellent moisture retention performance to improve the comfort of long-term wearing.

[0012] Preferably, the nanostructured coating is composed of nanosilver, nanotitanium dioxide, nanozinc oxide or other antibacterial nanomaterials, which can effectively inhibit the growth of bacteria and microorganisms, reduce the risk of eye infection, and at the same time have anti-fouling and anti-reflection functions, thereby improving the durability and visual clarity of the lens.

[0013] Preferably, the temperature control material in the passive adaptive layer is a shape memory polymer or a phase change material, and the photochromic material is a silver halide, titanium oxide nanoparticles or an organic photosensitizing dye, which can effectively adjust the softness and transmittance of the lens under different ambient temperatures and light intensities.

[0014] Preferably, the refractive power of the linear refractive power gradient layer of the contact lens decreases linearly along the radial direction, and the refractive power decreasing rate is 0.5D / mm per millimeter, gradually transitioning from the central vision correction area to the outside to reduce the risk of worsening myopia.

[0015] Preferably, the period length of the periodic sinusoidal refractive power variation layer is 1.2 mm, the variation amplitude is ±1.50D, and the sinusoidal waveform of the periodic sinusoidal refractive power variation layer of the contact lens is symmetrically distributed along the radial direction, ensuring the uniformity and consistency of the refractive power distribution in the vision control area.

[0016] Beneficial Effects

[0017] The present invention provides a novel blue light blocking soft hydrophilic contact lens. It has the following beneficial effects: The present invention provides a larger diopter of lower light addition in the myopia prevention and control area, produces the effect of "myopia defocus", creates myopia defocus on the retina, can effectively control the length of the eye axis, and achieve the effect of controlling the deepening of myopia. In the subsequent myopia prevention and control area, two myopia prevention and control designs appear at the same time. When the two myopia air defense designs are superimposed, a larger defocus amount can be provided, giving the wearer different defocus stimulation effects, thereby extending the myopia control effect of the product. In addition, since the subsequent superimposed part is relatively far away from the vision correction area, the discomfort of wearing can be reduced to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the lens surface design of the present invention; Figure 2 This is a schematic diagram of the design of the myopia control area of ​​the present invention, in which a single linear change and a periodic sinusoidal change are superimposed; Figure 3 This is a schematic diagram of the design of the myopia control area of ​​the present invention in which nonlinear changes and periodic sinusoidal changes are superimposed; Figure 4 It is a microstructure diagram of the present invention.

[0019] Among them: 1. Central vision correction area; 2. Myopia prevention and control area; 3. Vision control area. DETAILED DESCRIPTION

[0020] 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 described embodiments 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 creative work are within the scope of protection of the present invention. Specific embodiment 1

[0022] like Figure 1-Figure 4As shown, a new type of blue light blocking soft hydrophilic contact lens includes the following parts: a central vision correction zone 1, which is located at the center point of the lens and extends outward with a radius of 1.7 mm; a vision control zone 3, which surrounds the central vision correction zone 1 in the form of concentric circles, and the refractive power of the vision control zone 3 is a multi-layer adjustment optical structure, including the superposition of a linear structure and a periodic sinusoidal structure; a myopia prevention and control zone 2, whose range is 4.5 mm, and the outer surface of the myopia prevention and control zone 2 is aspherical; a wearing modification layer, which has high oxygen conductivity and moisture retention; a nanostructured coating, which has antibacterial, anti-fouling and anti-reflective properties, and improves the durability and cleanliness of the lens; a passive adaptive layer, which uses temperature control materials and photochromic materials, and is used to automatically adjust the softness and transmittance of the lens according to ambient temperature and light intensity. The multi-layer adjustment optical structure of the vision control zone 3 further includes: a linear refractive power gradient layer, whose refractive power decreases linearly in the radial direction, gradually transitioning from the central vision correction zone 1 to the outside, so as to reduce the risk of worsening myopia; a periodic sinusoidal refractive power change layer, whose refractive power changes periodically in a sinusoidal waveform along the radial direction, with a period length of 1.2 mm and a variation range of ±1.50D; and a superposition layer, which superimposes the linear refractive power gradient layer and the periodic sinusoidal refractive power change layer, so that the refractive power distribution of the entire vision control zone 3 presents a comprehensive multi-level adjustment effect, thereby optimizing the clarity of the central field of vision and the defocus control of the peripheral field of vision. The passive adaptive layer further includes: temperature control materials, which are more flexible in high temperature environments to improve wearing comfort, and restore higher rigidity in low temperature environments to maintain the shape stability of the lens; photochromic materials, which are used to automatically adjust the transmittance of the lens according to the ambient light intensity to provide the best visual comfort and protection effect; multi-layer composite structure, which arranges the temperature control material and the photochromic material in a multi-layer composite structure to ensure that the functions of the two materials do not interfere with each other, and at the same time achieve a synergistic adjustment effect to improve the adaptive performance of the lens in various environments. The contact lens further includes a drug sustained release system, in which a nano-scale drug carrier is integrated on the side of the contact lens close to the eyeball to slowly release anti-myopia drugs to further control the progression of myopia. The wearing modification layer uses silicone hydrogel, fluorosilicone hydrogel or other highly oxygen permeable polymer materials to ensure that the lens has high oxygen conductivity, reduce the risk of eye hypoxia, and has excellent moisture retention performance to improve the comfort of long-term wear. The nanostructured coating is made of nanosilver, nanotitanium dioxide, nanozinc oxide or other antibacterial nanomaterials, which can effectively inhibit the growth of bacteria and microorganisms, reduce the risk of eye infection, and have anti-fouling and anti-reflective functions, improving the durability and visual clarity of the lens. The temperature control material in the passive adaptive layer is made of shape memory polymer or phase change material, and the photochromic material is made of silver halide, titanium oxide nanoparticles or organic photosensitizers, which can effectively adjust the softness and light transmittance of the lens under different ambient temperatures and light intensities.The refractive power of the linear refractive power gradient layer decreases linearly along the radial direction, and its refractive power decrease rate is 0.5D / mm per millimeter, gradually transitioning from the central vision correction zone 1 to the outside to reduce the risk of worsening myopia. The periodic length of the periodic sinusoidal refractive power change layer is 1.2 mm, the change range is ±1.50D, and the sinusoidal waveform is symmetrically distributed along the radial direction to ensure the uniformity and consistency of the refractive power distribution in the vision control zone 3.

[0023] Contact lenses with peripheral defocus function achieve precise correction of the central visual field and defocus control of the peripheral visual field through a multi-level optical adjustment structure, effectively slowing down the progression of myopia. The superimposed design of the linear refractive power gradient layer and the periodic sinusoidal refractive power change layer ensures the accuracy and uniformity of the refractive power distribution, optimizes the user's visual quality, reduces the eye's adjustment pressure at different viewing distances, and thus significantly reduces the risk of myopia progression. The high oxygen conductivity and moisture retention performance of the wearing modified layer ensure comfort for long-term wearing, reduce eye dryness and fatigue, and improve the wearing experience.

[0024] The antibacterial, antifouling and anti-reflective functions of the nanostructured coating greatly improve the durability and hygiene of the lens. The antibacterial function effectively inhibits the growth of bacteria and microorganisms, reducing the risk of eye infection; the antifouling function reduces the adhesion of dirt and protein, keeps the lens clean and extends the service life; the anti-reflective function improves visual clarity by reducing reflections on the lens surface, especially in low-light environments, improving the user's visual comfort and safety.

[0025] The passive adaptive layer combines temperature control materials and photochromic materials to achieve automatic adjustment of the lens under different ambient temperatures and light intensities. The temperature control material enhances the softness of the lens in high temperature environments, improving wearing comfort; it restores high rigidity in low temperature environments to ensure the stability of the lens shape. The photochromic material automatically adjusts the light transmittance according to the ambient light intensity, providing optimal visual comfort and UV protection. This passive adaptive adjustment mechanism does not require electronic components, improves product reliability and user convenience, and ensures visual adaptability and protection in various environments.

[0026] The drug sustained-release system continuously provides anti-myopia drugs through the slow release of nano-scale drug carriers, effectively controlling the progression of myopia. The regulating layer that controls the release rate ensures the stable release of drugs under different environmental conditions, maintains the drug concentration within a safe and effective range, and avoids the risk of overdose or underdose. This system not only enhances the effect of myopia prevention and control, but also improves the convenience and safety of users, reduces the frequency of drug use, and improves user compliance.

[0027] Overall, the contact lens of the present invention achieves efficient myopia prevention and control, excellent wearing comfort and comprehensive eye health protection through precise multi-layer optical adjustment, advanced material application and integrated drug sustained release system. Its multifunctional design not only optimizes the visual experience, but also provides multiple myopia prevention and control and user protection functions through automatic adjustment mechanism and continuous drug release, significantly improving the functionality and market competitiveness of the product.

[0028] Efficient myopia prevention and control: Through the superposition of a linear refractive power gradient layer and a periodic sinusoidal refractive power change layer, clear correction of the central field of vision and defocus control of the peripheral field of vision are achieved, effectively slowing down the progression of myopia and meeting the myopia prevention and control needs of users of different age groups.

[0029] Excellent wearing comfort: The high oxygen permeability and moisture retention performance of the wearing modified layer ensures comfort for long-term wearing and reduces eye dryness and fatigue. The temperature control and photochromic materials of the passive adaptive layer automatically adjust the lens performance according to environmental changes to provide the best wearing experience.

[0030] Lens durability and hygiene: The antibacterial, anti-fouling and anti-reflective functions of the nanostructured coating significantly improve the durability and cleanliness of the lenses, reduce the risk of eye infections, keep the lenses clean and the visual clarity, and extend the service life of the lenses.

[0031] Intelligent adaptive function: The passive adaptive layer uses temperature control materials and photochromic materials to achieve automatic adjustment of the lens under different ambient temperatures and light intensities without the need for electronic components, thereby improving the adaptive performance of the lens and the convenience of user experience.

[0032] Comprehensive eye protection: Combining high oxygen permeability, moisture retention, antibacterial and antifouling, anti-reflection and UV protection functions, it provides comprehensive eye protection, improves users' eye health, and enhances product market competitiveness and user satisfaction.

[0033] Drug sustained-release function: The integrated drug sustained-release system continuously controls the progression of myopia through the slow release of nanoscale drug carriers, provides additional means of myopia prevention and control, and enhances the functionality of the product and user compliance.

[0034] Advanced manufacturing technology: using advanced manufacturing technologies such as precision mold forming, nanostructured coating deposition and multi-layer composite structure assembly to ensure the high quality and consistency of contact lenses, with the feasibility of large-scale production and flexible personalized customization capabilities to meet the personalized needs of different users. Specific embodiment 2

[0036] Based on the technical solution of the specific embodiment 1, the following practical cases are further provided: Case 1: Prevention and control of myopia among adolescents: Case description: Li, 15 years old, middle school student, has myopia of -3.50D in both eyes. With the increase of study pressure, Li's myopia has rapidly deepened in the past year. Li began to wear the contact lens with peripheral defocus function of the present invention. The contact lens provides a clear central field of vision through the central vision correction area 1, while the multi-layer adjustment optical structure of the vision control area 3 realizes peripheral defocus control and slows down the progression of myopia.

[0037] Conclusion: Precise myopia prevention and control: The multi-layer optical structure of vision control zone 3 effectively reduces the need for eye adjustment for distant objects and reduces the risk of myopia progression. After using contact lenses for six months, Li's myopia degree increased by only -0.25D, and his myopia progression was significantly slowed down compared with his peers who did not use prevention and control lenses.

[0038] Drug sustained-release system: The drug sustained-release system integrated into the contact lens slowly releases low-concentration atropine, further inhibiting the growth of the eye axis and effectively controlling the progression of myopia.

[0039] Wearing comfort: The high oxygen permeability and moisture retention performance of the modified layer ensure that Li's eyes are comfortable when wearing it for a long time, reducing dryness and fatigue.

[0040] Lens Durability and Hygiene: Nanostructured coatings provide antibacterial, anti-fouling and anti-reflective properties, reducing bacterial growth and dirt accumulation on the lens surface, extending lens life and maintaining visual clarity.

[0041] By using the contact lenses of the present invention, Mr. Li has effectively slowed down the progression of his myopia, with the rate of increase of his myopia being reduced from the previous rate of 15-20 degrees per month to 0-5 degrees per month, thereby improving his overall visual health and learning efficiency.

[0042] Case 2 Description: Wang, 35 years old, a software engineer, needs to work in front of a computer for a long time every day, which makes him prone to visual fatigue and dry eye symptoms. In order to alleviate these problems and prevent myopia from getting worse due to long-term close-up use of the eyes, Wang chose to use the contact lens with peripheral defocus function of the present invention.

[0043] Use of contact lenses: Wang began to wear the contact lenses of the present invention, which effectively relieved visual fatigue and protected vision through the multi-layered adjustable optical structure and passive adaptive layer of the vision control area 3.

[0044] Conclusion: Reduce visual fatigue: The multi-layer adjustment optical structure of vision control area 3 reduces the adjustment burden of Wang's eyes when he stares at the computer screen for a long time through central clear vision and peripheral defocus control, and significantly reduces visual fatigue.

[0045] Keep eyes moist: The high oxygen permeability and moisture retention of the wearing modified layer ensure that the eyes remain moist during long-term wear, reduce dry eye symptoms, and improve work efficiency and comfort.

[0046] Anti-reflection and anti-fouling functions: The anti-reflection function of the nanostructured coating reduces the reflection of screen light and improves the clarity and contrast of the screen display; the anti-fouling function reduces the accumulation of grease and dirt on the lens surface, keeps the lens clean, and reduces the frequency of cleaning.

[0047] Temperature control and photochromic adjustment: The passive adaptive layer automatically adjusts the softness and rigidity of the lens through temperature control materials to adapt to temperature changes in different indoor and outdoor environments; the photochromic material automatically adjusts the transmittance according to the light intensity to ensure optimal visual comfort and protection under different light conditions.

[0048] Drug sustained-release system: The integrated drug sustained-release system continuously controls the progression of myopia by slowly releasing anti-myopia drugs, further protecting Wang’s vision health and reducing the risk of worsening myopia due to long-term close-up eye use.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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, characterized in that: The contact lens comprises the following parts: The central vision correction zone (1) is located at the center of the lens and extends outwards with a radius of 1.7 mm; A vision control area (3) surrounds the central vision correction area (1) in the form of concentric circles, and the refractive power of the vision control area (3) is a multi-layered adjustment optical structure, including a superposition of a linear structure and a periodic sinusoidal structure; A myopia prevention and control area (2) having a range of 4.5 mm, wherein the outer surface of the myopia prevention and control area (2) is a non-spherical surface; A wearable modification layer, wherein the wearable modification layer has high oxygen conductivity and wettability; Nanostructured coatings, said nanostructured coatings having antibacterial, antifouling and antireflective properties; Passive adaptive layer, using temperature control materials and photochromic materials.

2. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: The multi-layered regulating optical structure of the vision control area (3) further comprises: A linear refractive power gradient layer, whose refractive power decreases linearly along the radial direction, gradually transitioning from the central vision correction zone (1) to the outside, is used to reduce the risk of myopia progression; The periodic sinusoidal refractive power variation layer has a refractive power that changes periodically in a sinusoidal waveform along the radial direction, with a period length of 1.2 mm and a variation range of ±1.50D. The stacking layer stacks the linear refractive power gradient layer and the periodic sinusoidal refractive power variation layer.

3. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: The passive adaptive layer further comprises: A temperature control material, wherein the temperature control material increases in softness in a high temperature environment to improve wearing comfort, and restores a higher rigidity in a low temperature environment to maintain the shape stability of the lens; Photochromic material, which is used to automatically adjust the light transmittance of the lens according to the intensity of ambient light; The multi-layer composite structure arranges the temperature control material and the photochromic material in a multi-layer composite structure.

4. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: The contact lens further comprises a drug sustained-release system, wherein a nanometer-scale drug carrier is integrated on a side of the contact lens close to the eyeball for slowly releasing the anti-myopia drug.

5. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: The wearing modification layer is made of either silicone hydrogel or fluorosilicone hydrogel.

6. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: The nanostructured coating is selected from one of nano silver, nano titanium dioxide and nano zinc oxide.

7. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: The temperature control material in the passive adaptive layer is selected from shape memory polymer or phase change material, and the photochromic material is selected from one of silver halide and titanium oxide nanoparticles.

8. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: The refractive power of the linear refractive power gradient layer of the contact lens decreases linearly along the radial direction, and the refractive power decreasing rate is 0.5D / mm per millimeter, gradually transitioning from the central vision correction area (1) to the outside.

9. The novel blue light blocking soft hydrophilic contact lens according to claim 1, characterized in that: The period length of the periodic sinusoidal refractive power variation layer of the contact lens is 1.2 mm, the variation amplitude is ±1.50D, and the sinusoidal waveform of the periodic sinusoidal refractive power variation layer of the contact lens is symmetrically distributed along the radial direction.

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