CN103926710B - A contact lens that uses chromatic aberration to control myopia and achieve beauty - Google Patents

Abstract

A contact lens for controlling myopia and cosmetic use of chromatic aberration is adapted to be placed in front of a patient's eye to correct ametropia of the patient's eye. The contact lens is provided with a central area with a focus on the fovea of the macula lutea and a peripheral area which extends outwards from the central area and is dyed and can transmit light, wherein when an incident light penetrates through the peripheral area with the dyed color, the peripheral area only allows the light with the same wavelength band as the dyed color to pass through, and the transmitted light with different wavelengths has different refractive indexes, so that the incident light is regulated and focused on the retina or in front of the retina, the axis of the eye of the patient can be gradually controlled to adapt to the imaging of the peripheral area on the retina or in front of the retina, the growth of the axis of the eye can be reduced, and the ametropia of the patient can be reduced.

Description

A contact lens that uses chromatic aberration to control myopia and achieve beauty

technical field

The invention relates to an optical lens, in particular to a contact lens.

Background technique

Colored contact lenses can make the wearer's appearance highlight a specific sense of shape, so it has been deeply loved by the public. Common colored contact lenses mimic the natural appearance of the iris, with colorful shapes and lines radiating from the area to help the eye look more natural A reinforcement method that can make the appearance of the eyes different from the normal state. However, these colored contact lenses have so far focused on aesthetics, allowing wearers to have different iris edges to produce special effects on facial features.

As shown in Figure 1, when the eye 4 of a myopia patient is not wearing a myopia lens, the distant scene is imaged in front of the retina 41, and Figure 2 is when the eye 4 of the myopia patient wears a myopia lens 5, the distant scene passes through the myopia The lens 5 is adjusted to form an image on the retina 41 . Wherein, the existing myopia lens 5 is a spherical concave lens, the distant scene is imaged on the retina 41 through the central area of the myopia lens 5 close to the optical axis, and the distant scene is imaged on the retina 41 through the peripheral area farther from the optical axis due to spherical aberration. The image is formed behind the retina 41, so the eye 4 will make adjustments to clearly image the distant scene on the retina 41, that is, contract the ciliary muscle 42 to make the lens 43 more convex, thereby forming stronger refraction. The imaging of distant objects can fall on the retina 41 through the peripheral area of the myopia lens 5 . But at this time, the imaging through the central area of the myopia lens 5 will move to the front of the retina 41 to form a blurred visual image. If the eyes 4 are in this adjustment state for a long time, the spasm of the ciliary muscle 42 may also stimulate the elongation of the eye axis, thereby causing the deepening of myopia.

Contents of the invention

The object of the present invention is to provide a contact lens that utilizes chromatic aberration to control myopia and has both cosmetic effects.

The present invention utilizes chromatic aberration to control myopia and has cosmetic contact lenses, comprising a central area with a fixed focus and a peripheral area extending outward from the central area and being dyed and transparent, wherein, when an incident The light penetrates the peripheral region dyed with color, and the peripheral region only allows light of the same wavelength band as the dyed color to pass through, and the penetrating light of different wavelengths has different refractive indices, so by using the peripheral region with dyed color area to adjust the focus position of the incident light.

The beneficial effect of the present invention is that: when a myopic patient wears the contact lens, the distant scene is imaged on the retina through the central area of the contact lens, and the distant scene is imaged on the retina through the peripheral area farther from the optical axis, and because the peripheral area The chromatic aberration formed by the dyed color is imaged on the retina or in front of it. Therefore, in order to clearly image the distant scene on the retina, the eye will make adjustments, that is, relax the ciliary muscle and make the curvature of the lens smaller, so that The imaging of the distant scene through the peripheral area of the optical lens can fall on the retina. The above eye adjustment methods can prevent the ciliary muscle from being in a tense and spasm state to stimulate the elongation of the eye axis, thereby causing the deepening of myopia.

Description of drawings

Fig. 1 is the schematic diagram illustrating the ametropia of eyes of a myopic patient;

Fig. 2 is the schematic diagram illustrating that the eyes of the myopia patient correct their ametropia via a myopia lens;

Fig. 3 is the front view of a first embodiment of the contact lens which utilizes chromatic aberration to control myopia and has beauty treatment concurrently;

Fig. 4 is a schematic diagram illustrating the first preferred embodiment in which the eyes of the myopia patient correct their ametropia through the first embodiment;

Fig. 5 is the front view of a second embodiment of the contact lens which utilizes chromatic aberration to control myopia and has beauty treatment concurrently;

FIG. 6 is a schematic diagram illustrating the second embodiment in which the ametropia of the myopic patient's eyes is corrected by the second embodiment.

Detailed ways

Below in conjunction with accompanying drawing and two embodiments the present invention is described in detail:

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Fig. 3, the first embodiment of the present invention utilizes chromatic aberration to control myopia and has the contact lens of beauty concurrently, comprises a central zone 1 with fixed focal point, and one extends outwards from this central zone 1 and is dyed and can A transparent peripheral area 2, and a color printing area 3 extending outward from the peripheral area 2.

The contact lens is made of a copolymer (copolymer) material formed by the reaction of 2-hydroxyethyl methacrylate (HydroxyEthylMethAcrylate, HEMA) and methacrylic acid (MethAcrylic Acid, MAA). The contact lens has a diopter of -3.00D, a diameter of 14.2mm, a base curve of 8.6mm and a center thickness of 0.08mm.

The central area 1 is a circular area with a diameter of 3.5±1.5 mm with the visual center of the contact lens as the origin. This embodiment is a circular area with a diameter of 3.5 mm, and the light transmittance is greater than 80%. Preferably, the light transmittance of the central area 1 is greater than 90%.

The outer edge of the peripheral area 2 is a concentric circle and the distance from the visual center of the contact lens is 6.0mm, and the light transmittance of the peripheral area 2 is greater than 30%.

The dyed color of the peripheral region 2 is purple or blue, and the dyes used for dyeing the peripheral region 2 can be selected from direct dyes, reactive dyes, and vat dyes. , azoic dyes (azoic dyes), basic dyes (basic dyes), acid dyes (acid dyes), disperse dyes (disperse dyes) and any combination of the above-mentioned several dyes. Preferably, the dye is purple and blue dyes approved by the Food and Drug Administration of the United States, which can be selected from D&C violet NO.2 (D&C violet NO.2), C.I. Reactive Blue 21 (C.I.Reacitve Blue 21 (CAS Reg.NO.73049-92-0)), C.I. Reacitve Blue 19 (CAS Reg.NO.2580-78-1)), C.I. Reacitve Blue 4 (CAS Reg.NO. 4499-01-8)), C.I. Reacitve Blue 163 (C.I. ReacitveBlue 163 (CAS Reg.NO.72847-56-4)), C.I. Reactive Blue 69 (C.I.Reacitve Blue69 (CAS Reg.NO.70209-99-3) ) and CI Reactive dye Blue 246 (CI Reactive dye Blue246).

The outer edge of the color printing area 3 is a concentric circle and is 13.5 mm away from the visual center of the contact lens, and the light transmittance of the color printing area 3 is less than 50%. Preferably, the light transmittance of the color printing area 3 is less than 30%.

The pigment used in the color printing area 3 can be allocated according to the color of the iris of the eyes. The pigment can be selected from [phthalocyanine (2-)] copper ([phthalocyaninato (2-)] copper (CAS Reg.NO.147-14-8)), carbazole violet (pigment purple 23) (carbazole violet ( Pigment violet 23) (CASReg.NO.6358-30-1, colour index NO.51319)), chromium oxide green (chromium oxide) (CAS Reg.NO.1308-38- 9, color index NO.77288)), chromium-cobalt-aluminum oxide (pigment blue 36) (CAS Reg.NO.68187-11-1, color index NO.77343) ), phthalocyanine green (CAS Reg.NO.1328-53-6, color indexNO.74260)), iron oxides (CAS Reg.NO.1332-37-2, color indexNO.77491) ), titanium dioxide (titanium dioxide (CAS Reg.NO.13463-67-7, colourindex NO.77891)), mica-based pearlescent pigment (mica-based pearlescent pigment), and any combination of the above.

The color printing area 3 has a plurality of void areas 31 surrounding the peripheral area 2 . Each void area 31 has an irregular shape and an area smaller than 1.0 mm ² . The void regions 31 are arranged in a plurality of ring-shaped zones in a direction away from the peripheral region 2 , and the ring-shaped zones closer to the peripheral region 2 have more void regions 31 . The ratio of the total area of the void area 31 to the area of the color printing area 3 is less than 0.5. Preferably, the area of each void area 31 is less than 0.1 mm ² , and the ratio of the total area of the void area 31 to the area of the color printing area 3 is less than 0.2.

Wherein, when an incident light penetrates the peripheral region 2, the peripheral region 2 only allows light of the same wavelength band as the blue or violet dye to pass through, and the transmitted light of this wavelength band has a relatively high refractive index, so that The equivalent diopter of the peripheral zone 2 combined with chromatic aberration is greater than the diopter of the central zone 1 .

Referring to Fig. 4, when a myopic patient's eye 4 wears this contact lens and is watching the distance, the distant scene is imaged on the macular fovea (fovea) of the retina 41 through the central area 1 of the contact lens, and the distant scene passes through the distance. The peripheral area 2 with the far optical axis is imaged in front of the retina 41 because the equivalent diopter of the peripheral area 2 is greater than the diopter of the central area 1, so the eye 4 is to clearly image the distant scene on the retina 41, then Adjustment will be made, that is, to relax the ciliary muscle 42, so that the curvature of the lens 43 becomes smaller, thereby forming weaker refraction, so that the imaging of distant scenery through the peripheral area 2 of the contact lens can fall on the retina 41 . In addition, the color printing area 3 is used to block light due to its low light transmittance to prevent distant objects from being imaged behind the retina 41 due to spherical aberration, and the color printing area 3 can also change the eyes 4 due to light reflection. iridescent colors. The above adjustment method of the eyes 4 can prevent the ciliary muscle 42 from being in a tense spasm state and stimulate the elongation of the eye axis, thereby causing the deepening of myopia, and achieving the effect of beauty treatment.

Referring to FIG. 5, the second embodiment of the present invention uses chromatic aberration to control myopia and has both cosmetic contact lenses, comprising a central area 1 with a fixed focus, and a dyed depth Different and transparent peripheral zone 2 .

The contact lens is made of a copolymer (copolymer) material formed by the reaction of 2-hydroxyethyl methacrylate (HydroxyEthylMethAcrylate, HEMA) and methacrylic acid (MethAcrylic Acid, MAA). The contact lens has a diopter of -3.00D, a diameter of 14.2mm, a base curve of 8.6mm and a center thickness of 0.08mm.

The central area 1 is a circular area with a diameter of 3.5 mm and a diameter of 3.5 mm with the optical center of the contact lens as the origin, and its light transmittance is greater than 80%. Preferably, the light transmittance of the central area 1 is greater than 90%.

The outer edge of the peripheral area 2 is a concentric circle and is 13.5mm away from the visual center of the contact lens. Using spin-casting (spin-casting) method, the centrifugal force will gradually throw the dye to the edge of the lens, so that the peripheral area can achieve the appearance and cosmetic effect of gradient dyeing (as shown in Figure 5). As the distance from the visual center of the contact lens becomes farther away, the light transmittance gradually becomes smaller, and the light transmittance changes from 80% light transmittance near the center zone 1 to 10% light transmittance at the edge of the lens.

The dyed color of the peripheral region 2 is purple or blue, and the dyes used for dyeing the peripheral region 2 can be selected from direct dyes, reactive dyes, and vat dyes. , azoic dyes (azoic dyes), basic dyes (basic dyes), acid dyes (acid dyes), disperse dyes (disperse dyes) and any combination of the above-mentioned several dyes. Preferably, the dye is selected from purple and blue dyes approved by the U.S. Food and Drug Administration, and these dyes can be selected from D&C violet NO.2 (D&C violetNO.2), C.I. Reactive Blue 21 (C.I.Reacitve Blue 21(CAS Reg.NO.73049-92-0)), C.I. Reacitve Blue 19(C.I.Reacitve Blue 19(CAS Reg.NO.2580-78-1)), C.I.Reactive Blue 4(C.I.Reacitve Blue 4(CAS Reg .NO.4499-01-8)), C.I. Reacitve Blue 163 (C.I.Reacitve Blue 163 (CAS Reg.NO.72847-56-4)), C.I. Reactive Blue 69 (C.I.ReacitveBlue 69 (CAS Reg.NO.70209- 99-3)) and CI Reactive dye Blue 246 (CI Reactive dyeBlue 246).

Referring to Fig. 6, when a myopia patient's eye 4 wears this contact lens and is looking at the distance, the distant scene is imaged on the macular fovea of the retina 41 through the central area 1 of the contact lens, and the distant scene is imaged on the fovea of the retina 41 through the distance from the optical axis. The far peripheral area 2 is imaged in front of the retina 41 because the equivalent diopter of the peripheral area 2 is greater than the diopter of the central area 1, so the eye 4 will make a clear image of the distant scene on the retina 41. To adjust means to relax the ciliary muscle 42, so that the curvature of the lens 43 becomes smaller, thereby forming weaker refraction, so that the imaging of distant objects through the peripheral area 2 of the contact lens can fall on the retina 41. In addition, the light transmittance at the periphery of the peripheral area 2 is low to prevent distant objects from being imaged behind the retina 42 due to spherical aberration. The above adjustment method of the eye 4 can prevent the ciliary muscle 42 from being in a tight spasm state and stimulating the elongation of the eye axis, thereby causing the deepening of myopia.

To sum up, the contact lens of the present invention uses chromatic aberration to control myopia and has both cosmetic features, because the peripheral zone 2 of the contact lens has a higher refractive index than the central zone 1 because of its blue or purple penetrating light The average refractive index of the penetrating light has a larger deflection angle. Therefore, the central area 1 and the peripheral area 2 of the contact lens have different diopters due to chromatic aberration, so that the distant scene is imaged on the fovea of the retina 41 through the central area 1 of the contact lens, and the distant scene is imaged on the fovea of the retina 41 through the distance from the optical axis. The farther peripheral area 2 is imaged in front of the retina 41 because the equivalent diopter of the peripheral area 2 is greater than that of the central area 1 . Therefore, in order to clearly image the distant scene on the retina 41, the eye 4 will make adjustments, that is, relax the ciliary muscle 42, and make the curvature of the lens 43 smaller, thereby forming a weaker refraction, allowing the distant scene to pass through the invisible. The image of the peripheral zone 2 of the glasses can fall on the retina 41 . The above eye 4 adjustment method can prevent the ciliary muscle 42 from being in a tight spasm state and stimulate the elongation of the eye axis, thereby causing the deepening of myopia. In addition, using the spin-casting method, the centrifugal force gradually throws the dye to The edge of the lens enables the peripheral area to achieve the effect of gradient dyeing and cosmetic appearance, so the purpose of the present invention can indeed be achieved.

It is worth mentioning that light of different wavelength bands, that is, light of different colors, has different phase velocities in a medium, resulting in a change in the refractive index of the medium. Therefore, when light of seven different colors passes through a lens, they are respectively focused on different places, resulting in chromatic aberration. However, among the seven different colors of light, blue light and violet light with shorter wavelengths have a higher refractive index than red light with longer wavelengths, and their refractive index is also higher than the average refractive index of white light, that is, after passing through the lens, they have a higher refractive index. Larger deflection angle. Therefore, the present invention applies this chromatic aberration to a contact lens for controlling myopia, which allows the transmitted light to be focused in front of the retina, thereby effectively preventing the progression of myopia.

The above is only an explanation of the specific structural embodiments of the present invention. Without violating the structure and spirit of the present invention, all those skilled in the art can still make various changes and modifications. In order to be covered in the scope of the following patent applications in this case.

Claims (7)

1. A kind of contact lens that utilizes chromatic aberration to control myopia and has beauty treatment concurrently, it is characterized in that: comprise a central zone with fixed focal point and one that extends outwards from this central zone and is purple and blue after being dyed wherein A peripheral area that can transmit light, wherein, the central area is a circular area with a diameter of 4.0±2.0 mm and the center of vision of the contact lens as the origin, and the light transmittance of the central area is greater than 80%, And both the central area and the peripheral area correspond to the pupil of the eye. When an incident light passes through the peripheral area, the peripheral area only allows the light of the same wavelength band as the blue or purple dye to pass through, and the wavelength band of this wavelength band passes through The transmitted light has a relatively high refractive index, so that the equivalent diopter of the peripheral area combined with chromatic aberration is greater than the diopter of the central area. 2. The contact lens for controlling myopia with chromatic aberration as claimed in claim 1, further comprising a color printing area extending outward from the peripheral area, wherein the color printing area The outer edge is concentric and the distance from the visual center of the contact lens is 10.0±5.0mm, and the light transmittance of the color printing area is less than 50%. 3. The contact lens for controlling myopia with chromatic aberration as claimed in claim 1, further comprising a color printing area extending outward from the peripheral area, wherein the color printing area The outer edge is concentric and the distance from the visual center of the contact lens is 9.0±4.5mm, and the light transmittance of the color printing area is less than 20%. 4. The contact lens for controlling myopia and cosmetology by using chromatic aberration as claimed in claim 2 or 3, characterized in that: the color printing area has a plurality of void areas surrounding the peripheral area, and the void areas are in accordance with A plurality of ring-shaped belts are arranged in the direction away from the peripheral area, and the ring-shaped belts closer to the peripheral area have more void areas, wherein each void area is in any shape and the area is less than 1.0 mm ² , and the void area The ratio of the total area to the area of the color printing area is less than 0.5. 5. The contact lens that utilizes chromatic aberration to control myopia as claimed in claim 1 and has both cosmetic features, is characterized in that: the outer edge of the peripheral area is a concentric circle and the distance from the visual center of the contact lens is 9.0±4.5mm , the light transmittance of the peripheral area is greater than 10%, the peripheral area is gradually dyed, and the light transmittance of the peripheral area becomes smaller gradually as the distance from the visual center of the contact lens is farther away. 6. The contact lens that uses chromatic aberration to control myopia and has beauty treatment as claimed in claim 1, characterized in that: a dye for dyeing the peripheral region can be selected from direct dyes, reactive dyes, vat dyes, Azo dyes, basic dyes, acid dyes, disperse dyes and any combination of the above mentioned dyes. 7. The contact lens for controlling myopia and beauty by using chromatic aberration as claimed in claim 2 or 3, characterized in that: the pigment used in the color printing area can be formulated according to the iridescent color of the eyes, The pigment may be selected from [phthalocyanine (2-)] copper, carbazole violet, chromium oxide green, chromium-cobalt-aluminum oxide, phthalocyanine green, iron oxide, titanium dioxide, mica-based pearlescent pigments and all of the above Any combination of the above mentioned pigments.