CN113514961B - Continuous zoom contact lens with peripheral myopic defocus - Google Patents
Continuous zoom contact lens with peripheral myopic defocus Download PDFInfo
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- CN113514961B CN113514961B CN202110472429.0A CN202110472429A CN113514961B CN 113514961 B CN113514961 B CN 113514961B CN 202110472429 A CN202110472429 A CN 202110472429A CN 113514961 B CN113514961 B CN 113514961B
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- 230000002093 peripheral effect Effects 0.000 title claims description 19
- 230000003287 optical effect Effects 0.000 claims abstract description 82
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 6
- 230000000750 progressive effect Effects 0.000 claims description 4
- 208000001491 myopia Diseases 0.000 abstract description 32
- 230000004379 myopia Effects 0.000 abstract description 24
- 210000001525 retina Anatomy 0.000 description 16
- 210000001508 eye Anatomy 0.000 description 11
- 210000004556 brain Anatomy 0.000 description 6
- 210000005252 bulbus oculi Anatomy 0.000 description 5
- 210000004087 cornea Anatomy 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 208000002173 dizziness Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 208000006550 Mydriasis Diseases 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000004402 high myopia Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- 230000001886 ciliary effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004438 eyesight Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 201000002287 Keratoconus Diseases 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000000416 hydrocolloid Substances 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
- G02C7/044—Annular configuration, e.g. pupil tuned
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Abstract
A full-focus depth-of-field myopia control contact lens comprises an optical zone formed by taking a presumed central optical axis as a circle center, wherein the diopter of the optical zone is continuously changed from a circular area outside the presumed central optical axis, a first diopter of the optical zone forms a corresponding first focal length, a second diopter of the optical zone forms a corresponding second focal length, a depth-of-field range is a difference range between the first focal length and the second focal length, an image quality formed in the depth-of-field range is better than an image quality formed outside the depth-of-field range, a defocus zone is formed in another circular area extending outwards from the optical zone, and the diopter of the defocus zone is continuously changed from one side close to the optical zone to one side far away from the optical zone.
Description
Technical Field
The invention relates to a contact lens, in particular to a contact lens with continuous zooming function, which can prevent and control myopia by peripheral myopia defocus.
Background
In recent years, as 3C products are too popular, more and more students and even pre-school children have myopia problems, the global myopia proportion of the children also has a phenomenon of rapid rising in the home, and if the 3C products are not controlled and corrected, the mild myopia can be continuously deepened to be high myopia, a plurality of eye-related complications can appear in the high myopia, and the high myopia is more serious and even causes blindness.
The common myopia control and correction methods can be divided into an optical method and a non-optical method, the non-optical method is used for a long-acting mydriasis agent and a cornea modeling piece worn at night in Taiwan at present, the mydriasis agent is economical and effective, unfortunately, eyes are hard to photophobize after the mydriasis agent is used, eyes often have to be in close contact with the eyes in the open air, near objects are hard to see at the beginning, some students even have the defects of difficulty in focusing and writing, and the like, and the defects of wearing the cornea modeling piece are that the cost of lenses, disinfectant and examination is high, and because the cornea modeling piece is made of hard materials, the foreign body sensation is obviously difficult to adapt at the initial stage of wearing, besides the defects, if the wearer does not truly disinfect the cornea modeling piece, the risk of eyeball infection is greatly increased.
In view of this, how to solve the above-mentioned problems is a primary problem to be solved by the present invention.
Disclosure of Invention
The invention aims to provide a full-focus depth-of-field myopia control contact lens which has the effects of relieving eye pressure and controlling the increase of myopia degrees.
In order to achieve the above-mentioned objective, the present invention provides a full-focus depth-of-field myopia control contact lens, which comprises an optical zone, wherein the optical zone is a circular zone formed by taking a assumed central optical axis as a center, the diopter of the optical zone is continuously changed from the circular zone outside the assumed central optical axis, a first diopter of the optical zone forms a corresponding first focal length, and a second diopter of the optical zone forms a corresponding second focal length.
And a depth of field range, which is the difference range between the first focal length and the second focal length, wherein the quality of an image formed in the depth of field range is better than that of an image formed outside the depth of field range. And the defocus region is another circular region extending outwards from the optical region, the diameter of the defocus region is larger than that of the optical region, and the diopter of the defocus region continuously changes from one side close to the optical region to one side far away from the optical region.
Preferably, the ADD of the depth of field range is in the range between 0.25 and 4.0D.
Preferably, the focal length in the depth of field is continuously increasing or continuously decreasing from the first focal length to the second focal length.
Preferably, the focal length in the depth of field range is gradually decreased from the first focal length to the second focal length.
Preferably, the focal length in the depth of field is gradually increased and gradually decreased from the first focal length to the second focal length.
Preferably, the diopter of the defocus region is gradually increased from the inner side to the outer side of the other circular region and gradually decreased.
Preferably, the ADD of the defocus region ranges between 1.0 and 11.0D.
Preferably, the ADD of the defocus region is 4.0D at a range between 0.0D and-4.0D.
Preferably, the first diopter is in direct proportion to the ADD of the defocus region when the first diopter is in the range between-4.0D and-10.0D.
Preferably, the highest defocus amount of the defocus region is above +0.0D.
The foregoing objects and advantages of the invention will be readily apparent from the following detailed description of the selected embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic plan view of a full depth of field myopia control contact lens of the present invention;
FIG. 2 is a schematic plan view of the optical zone and depth of field range of the present invention;
FIG. 3 is a schematic view of an imaging modality for a myopic patient wearing a concave lens;
FIG. 4 is a schematic representation of an imaging modality of the present invention worn by a myopic patient;
FIG. 5 is a refractive power distribution diagram of a first embodiment of the present invention;
FIG. 6 is a refractive power distribution diagram of a second embodiment of the present invention;
fig. 7 is a graph showing the power distribution of the present invention.
Wherein, the full-focus depth of field myopia control contact lens 1; an optical zone 10; a first diopter 11; a first focal length 111; a second diopter 12; a second focal length 121; a depth of field range 20; a defocus region 30; a central optical axis L is assumed.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, a first embodiment of the present invention is shown, which is for illustrative purposes only and is not limited to the embodiment.
The present invention provides a full-focus depth-of-field myopia control contact lens 1 with peripheral myopia defocus, comprising an optical zone 10, a depth-of-field range 20 and a defocus zone 30, wherein:
the optical zone 10 is a circular area with a diameter of 0.5mm to 4mm, which is formed by taking the center of the full-focus depth of field myopia control contact lens 1 as an assumed central optical axis L as the center of the circle. The radius of curvature (Base Curve) of the inner surface of the optical zone 10 is between 8.0mm and 9.0mm, if the Base Curve of the lens is too large, the problem that the lens cannot be attached to the eyeball and is easy to shift may occur, and if the Base Curve of the lens is too small, the eye is easy to feel tight discomfort, the Base Curve of the lens is generally about 1.1 times that of the Base Curve of the eyeball, in addition, in the present embodiment, the lens 1 is an optical system composed of an aspheric front Curve and a single curvature rear Curve, in other embodiments, the lens 1 may be an optical system composed of an aspheric front Curve and a single curvature rear Curve, or an optical system composed of an aspheric composite of the front Curve and the rear Curve, which are all within the scope of the present invention.
The equation of the aspherical optical system of the present invention is as follows:
z = surface profile of a surface parallel to the optical axis,
s = radial distance from the optical axis,
c=the reciprocal of the curvature and radius,
k=the conic constant of the cone,
a4, A6, a … =4 th, 6 th, 8 th … th aspheric coefficients
When k=0, the conical surface is spherical; when k > -1, the conical surface is elliptical; when k= -1, the conical surface is parabolic; when k < -1, the conical surface is hyperboloid.
The full-focus depth-of-field myopia control contact lens 1 of the aspherical optical system provided by the invention can be manufactured by the existing manufacturing method, and the existing manufacturing method can be roughly divided into three types: including turning (the Cutting), die Casting (Cast Molding), spin Casting (Spin Casting), and the like.
The full-focus depth-of-field myopia control contact lens 1 of the present invention can be made of the following materials: hydroxyethyl methacrylate (HEMA), methyl Methacrylate (MMA) and glycerol acrylate copolymer, hydrophilic hydrocolloid, hydrophobic silicone gum, are just examples and are not limiting of the materials selected in the present invention.
The full-focus depth-of-field myopia control contact lens 1 of the present invention is suitable for use with a wide variety of soft contact lenses, such as: a silicone soft contact lens, a multifocal soft contact lens, a terraced soft contact lens, an astigmatic soft contact lens, a hydrogel soft contact lens, a blue-filter soft contact lens, a colored soft contact lens. The full-focus depth-of-field myopia control contact lens 1 of the present invention is suitable for use with a wide variety of hard contact lenses, such as: night wear type hard contact lens, astigmatic type hard contact lens, aspheric hard contact lens, and hard contact lens special for keratoconus.
In the present embodiment, the diameter of the optical area 10 is 0.5mm to 4mm, and the diameter of the optical area 10 is not limited to the range of 0.5mm to 4mm in practical structural design, and can be adjusted according to the imaging quality or manufacturing technology. The diopter of the optical zone 10 is continuously changed outwards along the radial direction from the assumed optical axis L, and further, the diopter of the optical zone 10 is continuously increased outwards along the radial direction from the assumed optical axis L, the diopter of the optical zone 10 can also continuously decrease outwards along the radial direction from the assumed optical axis L, the setting of the aforementioned trend can be adjusted according to the actual requirement of the wearer, and the setting of the trend also comprises the initial diopter of the optical zone 10, if the wearer is a hyperopic patient, the diopter suitable for the hyperopic patient should be used as the starting value.
Referring to fig. 2 again, the optical zone 10 has a first diopter 11 adjacent to the assumed central optical axis L, the first diopter 11 forms a corresponding first focal length 111, the optical zone 10 has a second diopter 12 distant from the assumed central optical axis L, the second diopter 12 forms a corresponding second focal length 121, the first diopter 11 is smaller than the second diopter 12, so that the corresponding first focal length 111 is larger than the second focal length 121, the difference between the first focal length 111 and the second focal length 121 forms the depth of field range 20, the quality of an image formed in the depth of field range 20 is better than the quality of an image formed outside the depth of field range 20, in other words, the depth of field range 20 has the effect of correcting vision, the ADD of the depth of field range 20 is between 0.25 and 4.0D, and it is worth noting that the corresponding first focal length 111 and the second focal length 121 form a progressive change in the depth of field range.
When the wearer views objects with different distances, the brain of the wearer can accurately image the objects on the retina of the wearer by judging the distance between the objects and the distance and selecting the most appropriate focal length from the depth of field range 20, more specifically, when the wearer views objects with a shorter distance, the brain of the wearer can select the focal length most suitable for viewing the objects from the depth of field range 20, so that the ciliary muscle of the wearer does not need excessive force, the situation that the ciliary muscle is stretched and contracted for a long time is reduced, and the aim of effectively relieving the eye pressure is achieved; when the wearer gazes at a far object, the brain of the wearer can select the focal length most suitable for watching the far object from the depth of field range 20, so that the wearer can clearly see the far object, in addition, as the focal length in the depth of field range 20 changes to be a continuous change trend, the wearer can not jump the image visually due to the sharp change of the focal length when the wearer changes from watching to watching, and the discomfort of dizzy of the wearer can be avoided.
The lens 1 is also suitable for the wearer with reduced lens adjusting function, when the wearer with reduced lens adjusting function needs to see the object at a close distance, the wearer can select the focal length of the object to be seen from the depth of field range 20 through the brain of the wearer, so that the object can be accurately imaged on the retina of the wearer even if the curvature of the lens is not obviously changed for focusing, and further a clear visual image is generated.
The defocus region 30 is another circular region extending outwards from the optical region 10, and is a circular region with a diameter of 4mm to 9mm around the assumed central optical axis L, and the diameter of the defocus region 30 is not limited to the range of 4mm to 9mm in practical structural design, and can be adjusted according to imaging quality or manufacturing technology; the diopter of the defocus region 30 continuously changes from the inner side to the outer side of the circular region, and the ADD of the defocus region 30 ranges between 1.0 and 11.0D, more specifically, the diopter of the defocus region 30 is gradually increased from the inner side to the outer side of the circular region, and the setting of the trend and the ADD value of the defocus region 30 can be adjusted according to practical requirements.
Referring to fig. 3 and 4, compared with normal vision, the near-sighted patient can image in front of the retina due to the excessive diopter of cornea or longer eye axis of the near-sighted patient, and the object can image on the retina by using the concave lens, namely the general near-sighted lens after correction, but because the shape of the retina is not plane, the central focus falls on the retina when the near-sighted lens is corrected, but the peripheral focus deviates to the rear of the retina (as shown in fig. 3), and because the human eyeball has the characteristic of physiological autonomous regulation, in order to catch up the peripheral focus falling to the rear of the retina, the eye axis is continuously lengthened to further deepen the near-sighted degree, and the invention can change the peripheral optical design of the near-sighted control contact lens 1 through the defocus region 30 to make the peripheral light of the near-sighted control contact lens 1 enter the front of the retina to form the peripheral near-sighted defocus state (as shown in fig. 4), so that the risk of the eye axis is reduced.
Referring to fig. 5, in the present embodiment of the full-focus depth-of-field myopia control contact lens 1 provided by the first embodiment of the present invention, the optical zone 10 is a circular area with a diameter of 0.5mm to 4mm surrounded by the assumed central optical axis L, and the defocus region 30 is a circular area with a diameter of 4mm to 9mm, wherein the circular area with a diameter of 6mm to 7mm in the defocus region 30 has the maximum defocus amount.
In the optical zone 10, the first diopter is-6.00D away from the assumed central optical axis L, the second diopter is-5.00D away from the assumed central optical axis L, the ADD of the depth of field range 20 is 1.0, and the diopters in the depth of field range 20 continuously increase from the first diopter 11 to the second diopter 12. When the wearer views objects at different distances, the brain of the wearer can select the most appropriate diopter from the depth of field range 20 (-5.00D to-6.00D), so that the objects can be accurately imaged on the retina to generate clear visual images, and the wearer can not generate dizzy discomfort caused by sharp change of diopter when viewing near-far objects due to continuous increasing trend of diopter in the depth of field range 20.
It should be noted that, the optical zone 10 extends to the defocus zone 30 outwards by adopting a progressive defocus design, that is, the diopter from the optical zone 10 to the defocus zone 30 is continuously increasing, and the defocus zone 30 has the maximum defocus amount, in this embodiment, the ADD of the defocus zone 30 is 5.0D, the average diopter passing through the defocus zone 30 is greater than the average diopter of the optical zone 10, so as to generate myopic defocus, and the object can be imaged in front of the peripheral range of retina instead of behind retina, thus effectively solving the problem of continuously deepening the diopter caused by conventional focus tracking, and achieving the purpose of controlling myopic power.
Referring to fig. 6, in the present embodiment of the full-focus depth-of-field myopia control contact lens 1 provided by the second embodiment of the present invention, the optical zone 10 is a circular area with a diameter of 0.5mm to 4mm surrounded by the assumed central optical axis L, and the defocus region 30 is a circular area with a diameter of 4mm to 9mm, wherein the circular area with a diameter of 7mm to 8mm in the defocus region 30 has the maximum defocus amount.
In the optical zone 10, the first diopter is-6.00D away from the assumed central optical axis L, the second diopter is-5.00D away from the assumed central optical axis L, the ADD of the depth of field range 20 is 1.0, and the diopters in the depth of field range 20 continuously increase from the first diopter 11 to the second diopter 12. When the wearer views objects at different distances, the brain of the wearer can select the most appropriate diopter from the depth of field range 20 (-5.00D to-6.00D), so that the objects can be accurately imaged on the retina to generate clear visual images, and the wearer can not generate dizzy discomfort caused by sharp change of diopter when viewing near-far objects due to continuous increasing trend of diopter in the depth of field range 20.
It should be noted that, the optical zone 10 extends to the defocus zone 30 outwards by adopting a progressive defocus design, that is, the diopters from the optical zone 10 to the defocus zone 30 tend to decrease and then increase, and the defocus zone 30 has the largest defocus amount, in this embodiment, the ADD of the defocus zone 30 is 5.0D, and the average diopter of the defocus zone 30 is larger than the average diopter of the optical zone 10, so as to generate myopic defocus, and image the object in front of the peripheral range of retina, but not behind retina, so as to effectively solve the problem of continuously deepening the diopter caused by conventional eye tracking, and achieve the purpose of controlling myopic degree.
Referring to fig. 7, which shows the distribution diagram of the full-focus depth of field myopia control contact lens 1 at each diopter, it can be seen that the optical zone 10 is a circular area with a diameter of 0.5mm to 4mm surrounded by the assumed central optical axis L, and the defocus zone 30 is a circular area with a diameter of 4mm to 9mm, wherein the circular area with a diameter of 6mm to 7mm in the defocus zone 30 has the maximum defocus amount, and it is worth specifically stated that the maximum defocus positions (such as the vertical axis coordinate in fig. 7) of the defocus zones 11 are 4.5D, 3.5D, 2.5D, 1.5D and 0.5D when the first diopter 11 is 0.0D, -1.0D, -2.0D, -3.0D and-4.0D are respectively, and the ADD of the defocus zone 30 is 4.0D. When the first diopter 11 is-5.0D, -6.0D, -7.0D, -8.0D, -9.0D, and-10.0D, the position of the highest defocus amount of the defocus region 30 (as in the vertical axis coordinate of fig. 7) is 0.5D, in other words, when the first diopter 11 is within the range between-4.0D and-10.0D, the larger the first diopter 11, the larger the ADD of the defocus region 30, and when the actual structure design is performed, the ADD value of the defocus region 30 is not limited to the above range, and can be adjusted according to the myopia prevention and control effect or the manufacturing technique.
From the above embodiments, it can be seen that the advantages of the present invention are summarized as follows: 1. by selecting the most appropriate focal length from this depth of field range 20, the target object is accurately imaged onto the wearer's retina to produce a clear visual image. 2. Through the continuous change of diopter in the optical zone 10, the wearer will not feel dizzy and uncomfortable due to the abrupt change of diopter when switching between far and near. 3. The design of the defocus region 30 not only has the advantage of relieving eyeball pressure, but also has the effect of relieving the increase of myopia degree.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A continuous-zoom contact lens having peripheral myopic defocus comprising:
the optical zone is a circular area formed by taking an assumed central optical axis as a circle center, the diopter of the optical zone is continuously changed from the circular area outside the assumed central optical axis, a first diopter of the optical zone forms a corresponding first focal length, and a second diopter of the optical zone forms a corresponding second focal length;
a depth of field range, which is a difference range between the first focal length and the second focal length, wherein imaging definition formed in the depth of field range is better than imaging definition formed outside the depth of field range;
and the defocus region is another circular region extending outwards from the optical region, the diameter of the defocus region is larger than that of the optical region, and the diopter of the defocus region continuously changes from one side close to the optical region to one side far away from the optical region.
2. The continuous-zoom contact lens with peripheral myopic defocus of claim 1, wherein the depth-of-field range of ADD is in the range between 0.25 and 4.0D.
3. The continuous-zoom lens with peripheral myopic defocus of claim 1, wherein the focal length in the depth of field is continuously increasing or continuously decreasing from the first focal length to the second focal length.
4. The continuous-zoom lens of claim 1, wherein the focal length in the depth of field ranges from the first focal length to the second focal length in a decreasing-then-increasing trend.
5. The continuous-zoom lens of claim 1, wherein the focal length in the depth of field is in a decreasing progression from the first focal length to the second focal length.
6. The continuous-zoom lens with peripheral myopic defocus of claim 1, wherein the diopter of the defocus region is in a progressive progression from the inside to the outside of the other circular region.
7. The continuous-zoom contact lens with peripheral myopic defocus of claim 6, wherein the ADD of the defocus region is in the range between 1.0 and 11.0D.
8. The continuous-zoom lens with peripheral myopic defocus of claim 7, wherein the ADD of the defocus region is 4.0D at a range of the first diopter between 0.0D and-4.0D.
9. The continuous-zoom lens with peripheral myopic defocus of claim 7, wherein the first diopter is in direct proportion to the ADD of the defocus region at a range between-4.0D and-10.0D.
10. The continuous-zoom contact lens with peripheral myopic defocus of claim 8 or 9, wherein the highest defocus position of the defocus region is above +0.0d.
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| CN202110472429.0A CN113514961B (en) | 2021-04-29 | 2021-04-29 | Continuous zoom contact lens with peripheral myopic defocus |
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| CN202110472429.0A CN113514961B (en) | 2021-04-29 | 2021-04-29 | Continuous zoom contact lens with peripheral myopic defocus |
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| CN113514961B true CN113514961B (en) | 2023-07-21 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012037154A2 (en) * | 2010-09-13 | 2012-03-22 | The Regents Of The University Of Colorado, A Body Corporate | Extended depth of field optics with variable pupil diameter |
| CN111665633A (en) * | 2020-06-17 | 2020-09-15 | 歌尔科技有限公司 | Collapsible mirror leg subassembly and head-mounted apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9638936B2 (en) * | 2014-08-20 | 2017-05-02 | Johnson & Johnson Vision Care, Inc. | High plus treatment zone lens design for preventing and/or slowing myopia progression |
| US10901237B2 (en) * | 2018-01-22 | 2021-01-26 | Johnson & Johnson Vision Care, Inc. | Ophthalmic lens with an optically non-coaxial zone for myopia control |
| CN212112032U (en) * | 2020-05-26 | 2020-12-08 | 江苏明世光学科技有限公司 | Presbyopic reading spectacle lens with depth of field and preparation mold thereof |
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2021
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012037154A2 (en) * | 2010-09-13 | 2012-03-22 | The Regents Of The University Of Colorado, A Body Corporate | Extended depth of field optics with variable pupil diameter |
| CN111665633A (en) * | 2020-06-17 | 2020-09-15 | 歌尔科技有限公司 | Collapsible mirror leg subassembly and head-mounted apparatus |
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| CN113514961A (en) | 2021-10-19 |
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