CN112494175A - Posterior chamber type aspheric intraocular lens with lens - Google Patents
Posterior chamber type aspheric intraocular lens with lens Download PDFInfo
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- CN112494175A CN112494175A CN202011333735.8A CN202011333735A CN112494175A CN 112494175 A CN112494175 A CN 112494175A CN 202011333735 A CN202011333735 A CN 202011333735A CN 112494175 A CN112494175 A CN 112494175A
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- 230000004075 alteration Effects 0.000 claims abstract description 84
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 230000004438 eyesight Effects 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 210000000695 crystalline len Anatomy 0.000 abstract description 77
- 206010020675 Hypermetropia Diseases 0.000 abstract description 5
- 230000004305 hyperopia Effects 0.000 abstract description 5
- 201000006318 hyperopia Diseases 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 description 17
- 210000001747 pupil Anatomy 0.000 description 15
- 210000004087 cornea Anatomy 0.000 description 7
- 208000002177 Cataract Diseases 0.000 description 6
- 208000001491 myopia Diseases 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 210000001742 aqueous humor Anatomy 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004310 photopic vision Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000001525 retina Anatomy 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000014733 refractive error Diseases 0.000 description 2
- 230000004296 scotopic vision Effects 0.000 description 2
- 208000029091 Refraction disease Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004430 ametropia Effects 0.000 description 1
- 210000002159 anterior chamber Anatomy 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1602—Corrective lenses for use in addition to the natural lenses of the eyes or for pseudo-phakic eyes
- A61F2/161—Posterior chamber lenses for use in addition to the natural lenses of the eyes
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
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- Oral & Maxillofacial Surgery (AREA)
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Abstract
The invention belongs to the technical field of intraocular lenses with lenses, and particularly relates to an artificial lens with posterior chamber type aspheric lenses with lenses. The invention aims to provide a posterior chamber type aspheric intraocular lens with a lens, which can keep the natural spherical aberration of the lens of a human eye when the diameter of an iris is smaller and carry out negative spherical aberration correction when the diameter of the iris is larger by arranging an aspheric surface with zero central spherical aberration and negative spherical aberration correction at the periphery in an optical area, thereby improving the vision effect in a dark environment. Compared with the existing aspheric surface design with fixed spherical aberration, the aspheric surface with fixed spherical aberration has the advantages that negative spherical aberration correction can be carried out on the crystalline lens of the human eye when the diameter of the iris is larger in a dark environment, and the vision in hypermetropia in the dark environment is improved.
Description
Technical Field
The invention belongs to the technical field of intraocular lenses with lenses, and particularly relates to an artificial lens with posterior chamber type aspheric lenses with lenses.
Background
Phakic intraocular lenses refer to supplemental lenses that are implanted into the eye with the natural lens of the eye still present, primarily for refractive correction in patients with myopia, hyperopia, and astigmatism. Depending on the implantation location in the eye, a distinction can be made between anterior chamber phakic intraocular lenses and posterior chamber phakic intraocular lenses, i.e. intraocular lenses which are implanted in the space behind the iris and in front of the natural lens. On the similar product, namely cataract artificial lens, the aspheric surface design adopted on the circular lens is that after the original lens with pathological changes is removed, the spherical aberration correction is carried out on the basis of the refractive correction.
The focal length of the natural crystalline lens of the human eye is continuously focused, the adjustment of far and near vision can be realized, the spherical aberration in the process is also continuously changed, the natural crystalline lens of the human eye is positive spherical aberration and negative spherical aberration which are completely opposite under the completely adjusting and completely relaxing states, the example is that the diameter of a pupil is 3-4mm, the spherical aberration is about +1D when the visual distance of the human eye is infinite, the spherical aberration is almost 0 at the position of about 700mm of the visual distance, the spherical aberration is reversely increased along with the further reduction of the visual distance to 300mm, the spherical aberration can reach about-1D, when the diameter of the pupil is maximum, the visual distance spherical aberration can reach +3D, the change characteristic of the spherical aberration of the human eye naturally evolved, and the human eye slowly adapts to the spherical aberration in the long-term life.
However, when the cataract intraocular lens is used, the natural lens which can focus is removed, so that the cornea and the cataract intraocular lens form an optical system alone, the optical system has no continuous focusing capacity, and the cataract intraocular lens only needs to correct fixed spherical aberration.
Therefore, the design of the prior aspheric artificial lens for treating cataract removes a natural lens with focusing capacity, so that a system formed by the artificial lens and a cornea is a fixed focus system, and the focusing action of the natural lens is not required to be considered, so that the aspheric design is very simple.
In summary, there is a need in the market for a new aspheric phakic intraocular lens with a lens that can incorporate the variation of the natural spherical aberration adjustment of the human eye into the whole spherical aberration adjustment process, and that exhibits different aspheric designs according to actual requirements under different pupil size conditions.
The patent publication No. CN 108066046A, Chinese invention patent with publication No. 2018.05.25 discloses a trifocal intraocular lens and a manufacturing method thereof, wherein the front surface and/or the rear surface adopt aspheric surface design, the front surface and/or the rear surface of an optical part are/is provided with diffraction step structures, and the heights of adjacent diffraction steps are alternately changed, wherein in a standard human eye model, the longitudinal spherical aberration of the trifocal intraocular lens at the retina under the clear aperture of 0-6mm is a negative value, the absolute value of the longitudinal spherical aberration is increased along with the increase of the clear aperture, and the range of the longitudinal spherical aberration of the trifocal intraocular lens at the retina under the clear aperture of 6mm is-0.26 to-0.85 mm.
However, the artificial lens in the patent of the invention is still fixed in nature and has three fixed spherical aberrations, which are completely different from the continuously-changed focal length of the natural lens of the human eye.
Disclosure of Invention
The invention aims to provide a posterior chamber type aspheric intraocular lens with a crystal eye, which can keep the natural spherical aberration of a complete dioptric system of a human eye when the diameter of an iris is smaller and carry out negative spherical aberration correction when the diameter of the iris is larger by arranging an aspheric surface with zero central spherical aberration and negative spherical aberration correction at the periphery in an optical area, thereby improving the vision effect in a dark environment. Compared with the existing aspheric surface design without spherical aberration, the aspheric surface has the advantages that negative spherical aberration correction can be carried out on the crystalline lens of the human eye when the iris diameter is larger in a dark environment, so that the vision in hyperopia in the dark environment is improved.
An posterior chamber aspheric phakic intraocular lens having an aspheric central zero spherical aberration and a peripheral negative spherical aberration correction.
The human eye is an optical imaging system with the characteristic of changing spherical aberration in the process of pupil adjustment, and the spherical aberration of the human eye is continuously changed along with the visual accommodation of far vision and near vision brought by the zooming of the crystalline lens of the human eye.
Further, luminance is 100 nit (cd/m)2) The pupil diameter d is about 2.9mm, the pupil diameter d is not suitable for reading under 70 nits, the brightness is 20 nits when the pupil diameter is about 3.47mm, the environment is separated from the photopic vision state and enters the transition region environment between photopic vision and scotopic vision, the rod cells of human retina are gradually activated, the cone cells are close to the cutoff, and the detail resolution capability is almost absent, so the near quality requirement is reduced. In the present life, e.g. driving at night or watching electricityShadow and the like, the requirement on far vision is far higher than that on near vision, but as mentioned above, when the brightness is lower than 20 nit, the pupil of the natural human eye is enlarged, the far vision spherical aberration can reach +3D at most, and the vision quality in far vision is greatly influenced, so that negative spherical aberration correction is required to be introduced.
In the invention, the smaller iris diameter corresponds to the photopic vision state, the light is good at the moment, the situation of no need of correcting spherical aberration is corresponded, the iris diameter is larger than 3mm, namely the pupil diameter is larger than 3.47mm, the scotopic vision state is realized, and the negative spherical aberration correction is carried out at the moment, so that the vision quality during night activities can be ensured.
In the present invention, the iris diameter refers to an actual diameter of an iris opening, and the pupil diameter refers to a diameter of an image that can be measured outside through the cornea, and is enlarged, so that the iris diameter of 3mm corresponds to the pupil diameter of 3.47 mm.
In addition, the cataract intraocular lens in the prior art corrects the spherical aberration of the human eye after the natural lens is removed, and substantially corrects the corneal spherical aberration, which is completely different from the mode for correcting the spherical aberration of the complete eye in the application, the aspheric surface of the complete eye is designed to keep the change characteristic of the natural spherical aberration of the human eye within h being less than or equal to 1.5mm, and the hypermetropia spherical aberration is reduced to be beneficial to the requirement of hypermetropia eyes when h is more than 1.5 mm.
The further preferred technical scheme is as follows: the area with the central diameter of 3mm of the artificial lens has zero spherical aberration and is used for keeping the natural spherical aberration of human eyes, and the area with the diameter of 3mm has a negative spherical aberration correction effect and is used for correcting the natural spherical aberration of the human eyes so as to improve the vision in a dark environment.
The further preferred technical scheme is as follows: when the diameter of the iris is larger than 3mm, the spherical aberration is corrected to be within +1D through the area outside the diameter of the artificial lens by 3mm, and the maximum value of the correction amount is-3D.
The further preferred technical scheme is as follows: the aspheric cross-sectional function of the intraocular lens is expressed as:
wherein z represents the optical axis direction face height; c represents the reciprocal of the radius of curvature; h represents a corresponding radius; k represents the aspheric parameter(s),
for h less than or equal to 1.5mm, adjusting k and/or a4The value mode enables the artificial lens within 3mm to have the design of zero spherical aberration, and the effect of the natural spherical aberration of human eyes is kept when the corresponding iris diameter is within 3mm,
for the range of h > 1.5mm, the adjustment a is adopted6And/or a8The values are such that the intraocular lens has a spherical aberration of-2D outside 3mm, corresponding to the effect of compensating for 2D spherical aberration in the human eye when the iris diameter is outside 3 mm.
The further preferred technical scheme is as follows: the center thickness of the optical area of the artificial lens is 0.05-0.25 mm.
The further preferred technical scheme is as follows: the optical area of the artificial lens is a convex-concave type round lens, and the front surface or the rear surface of the convex-concave type round lens is an aspheric surface.
Unlike the aspherical spherical aberration correction design in the fixed focus system of cataractous intraocular lenses, which corrects only for the fixed spherical aberration of the cornea, the present invention adjusts for continuous spherical aberration changes in the natural lens of the eye with continuous focusing capabilities, which is completely different and more difficult.
Drawings
Fig. 1 is a diagram of a model eye optical path in embodiment 1 of the present invention.
Fig. 2 is an image distance distribution diagram in embodiment 1 of the present invention.
FIG. 3 is a graph of the image distance distribution of a model eye after implantation of a spherical diopter crystal according to the invention in example 1, wherein a deviation between the two distribution curves can be seen, the spherical diopter crystal changing the spherical aberration distribution of the human eye.
FIG. 4 is a graph of image distance distribution in a model eye after implantation of an aspheric refractive crystal in example 1 of the present invention.
Fig. 5 is a graph showing the power distribution in simulated room water in example 1 of the present invention.
FIG. 6 is a graph showing the power distribution of a design crystal in simulated room water in example 2 of the present invention.
FIG. 7 is a power profile simulating zero spherical aberration for a-15D crystal in room water within 3mm diameter in example 2 of the invention.
FIG. 8 is a power profile simulating 2D spherical aberration compensation of a-15D crystal in room water at a pupil diameter of 8mm in example 2 of the present invention.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example 1
Near vision eye at 6D, described by the Golsland model eye, the optical structure parameters of the model eye are as follows.
Radius of curvature: 7.8mm of the anterior surface of the cornea, 6.8mm of the posterior surface of the cornea, 10.0mm of the anterior surface of the lens, 6.0mm of the posterior surface of the lens, 7.911mm of the anterior surface of the crystalline nucleus and 5.75mm of the posterior surface of the crystalline nucleus; the position of the refraction surface: anterior corneal surface 0mm, posterior corneal surface 0.5mm, anterior lens surface 3.6mm, posterior lens surface 7.2mm, anterior lens nucleus surface 4.146mm, posterior lens nucleus surface 4.565 mm; refractive index: cornea 1.376, aqueous humor 1.336, crystalline lens 1.386, crystalline nucleus 1.406, vitreous body 1.336.
The distance between the far point of the myopic eye is L =166.667mm, the corresponding optical path of the model eye is shown in figure 1, the axial image distance is L' =19.5616mm, the image distance distribution is shown in figure 2, and the axial length of the eye is 26.762 mm.
If a spherical refractive lens is implanted in the manner of the prior art, the optical parameters of the spherical refractive lens are: radius of curvature r of front surface1=22.763mm, radius of curvature r of rear surface2=9.6mm, refractive index n =1.461, and center thickness t =0.05 mm. The axial length of the eye in the eye state of the model was 26.762mm, the axial image distance L' =19.5616mm, the distance L to the distant point was ∞, and the image distance distribution is shown in fig. 3.
It is now apparent that the implanted lens corrects refractive errors of the eye while altering the spherical aberration profile of the eye.
Therefore, in this embodiment, the spherical crystal is modified by adopting an aspheric design of a quadric surface, and the cross-sectional function of the quadric surface can be expressed as:
wherein z represents: the surface height in the optical axis direction; c represents: the inverse curvature radius; h represents: a corresponding radius; k represents: and (4) the aspheric surface parameters are k =12.5, and the image distance distribution is shown in figure 4.
At this time, the implanted aspheric lens corrects the ametropia of the human eye without changing the spherical aberration distribution of the human eye, namely, the spherical aberration of the area corresponding to the intraocular lens diameter within 3mm is designed for keeping the natural spherical aberration of the human eye lens.
In addition, the power profile of the aspheric diopter crystal at infinity incident in simulated intraocular chamber water (n = 1.336) is shown in fig. 5.
FIG. 5 shows the power distribution of a zero spherical aberration design crystal, which shows that the aspheric crystal designed according to zero spherical aberration can realize the purpose of not changing the spherical aberration distribution of human eyes after being implanted into human eyes under the condition of infinite far incidence in simulated aqueous humor of the eyes.
In this embodiment, the intraocular lens has an optic zone center thickness of 0.05-0.25 mm. The optical area of the artificial lens is a convex-concave type round lens, and the front surface or the rear surface of the convex-concave type round lens is an aspheric surface.
Example 2
Under the condition of insufficient light, the diameter of the pupil of the human eye can reach 8mm, the diameter of the corresponding iris is about 6.8-7mm, the 2D-3D spherical aberration compensation design is provided, and the high-order term a in the high-order surface function is used6And a8And adjusting the coefficient.
The higher order curved surface cross-sectional function is:
wherein z represents: the surface height in the optical axis direction; c represents: the inverse curvature radius; h represents: a corresponding radius; k represents: and (4) aspheric surface parameters.
In this example, a is used6Coefficient of-0.00001, a8The coefficient is adjusted to be-6E-7, so that under the condition that the diameter of the pupil of the human eye is 8mm, the dioptric crystal has 2D spherical aberration compensation, the spherical aberration of the human eye is reduced, and the adjusted optical power distribution in the simulated eye aqueous humor is shown in figure 6.
As for the adjustment parameters of the zero spherical aberration design within 3mm of the diameter of the dioptric crystal, the higher-order term a in the higher-order surface function can be adopted according to the applicability4Coefficient, outer spherical aberration compensation of 3mm diameter, or a can be adopted independently according to applicability6Or a8And adjusting the coefficient. Taking the example of a-15D dioptric crystal, the optical parameter of the crystal is the front surface r1= 63.174mm, rear surface r2=9.6mm, refractive index n =1.461, and center thickness t =0.05 mm. With a4The index is 0.00018, achieving zero spherical aberration within 3mm of the ametropic crystal diameter, see figure 7.
With a6The coefficient is-1.9E-5, and 2D spherical aberration supplement of the dioptric crystal at the pupil diameter of 8mm is achieved, see figure 8.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.
Claims (6)
1. An posterior chamber aspheric phakic intraocular lens comprising: the aspheric surface of the artificial lens has the effects of correcting the central zero spherical aberration and the peripheral negative spherical aberration.
2. The posterior chamber aspheric phakic intraocular lens of claim 1, wherein: the area with the central diameter of 3mm of the artificial lens has zero spherical aberration and is used for keeping the natural spherical aberration of human eyes, and the area with the diameter of 3mm has a negative spherical aberration correction effect and is used for correcting the natural spherical aberration of the human eyes so as to improve the vision in a dark environment.
3. The posterior chamber aspheric phakic intraocular lens of claim 1, wherein: when the diameter of the iris is larger than 3mm, the spherical aberration is corrected to be within +1D through the area outside the diameter of the artificial lens by 3mm, and the maximum value of the correction amount is-3D.
4. The posterior chamber aspheric phakic intraocular lens of claim 1, wherein: the aspheric cross-sectional function of the intraocular lens is expressed as:
wherein z represents the optical axis direction face height; c represents the reciprocal of the radius of curvature; h represents a corresponding radius; k represents the aspheric parameter(s),
for h less than or equal to 1.5mm, adjusting k and/or a4The value mode enables the artificial lens within 3mm to have the design of zero spherical aberration, and the effect of the natural spherical aberration of human eyes is kept when the corresponding iris diameter is within 3mm,
for the range of h > 1.5mm, the adjustment a is adopted6And/or a8The values are such that the intraocular lens has a spherical aberration of-2D outside 3mm, corresponding to the effect of compensating for 2D spherical aberration in the human eye when the iris diameter is outside 3 mm.
5. The posterior chamber aspheric phakic intraocular lens of claim 1, wherein: the center thickness of the optical area of the artificial lens is 0.05-0.25 mm.
6. The posterior chamber aspheric phakic intraocular lens of claim 1, wherein: the optical area of the artificial lens is a convex-concave type round lens, and the front surface or the rear surface of the convex-concave type round lens is an aspheric surface.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367840A (en) * | 2021-08-12 | 2021-09-10 | 微创视神医疗科技(上海)有限公司 | Intraocular lens and method of making same |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060030938A1 (en) * | 2003-03-31 | 2006-02-09 | Altmann Griffith E | Aspheric lenses and lens family |
| CN203208162U (en) * | 2013-04-22 | 2013-09-25 | 爱博诺德（北京）医疗科技有限公司 | Aspherical intraocular lens |
| CN106388974A (en) * | 2016-12-09 | 2017-02-15 | 天津世纪康泰生物医学工程有限公司 | Aspherical artificial lens capable of completely correcting mesopic vision |
| CN206102780U (en) * | 2016-06-01 | 2017-04-19 | 西安浦勒生物科技有限公司 | Aspherical intraocular lens |
| CN108078652A (en) * | 2017-01-06 | 2018-05-29 | 爱博诺德（北京）医疗科技有限公司 | Posterior chamber type has crystal eye intraocular lens |
| CN108078654A (en) * | 2017-07-28 | 2018-05-29 | 爱博诺德（北京）医疗科技有限公司 | The manufacturing method of intraocular lens and the intraocular lens using this method manufacture |
| CN208096842U (en) * | 2017-10-13 | 2018-11-16 | 天津世纪康泰生物医学工程有限公司 | Region spherical aberration profile astigmatism correction intraocular lens |
| CN109363802A (en) * | 2018-11-02 | 2019-02-22 | 无锡蕾明视康科技有限公司 | A kind of progressive modulation type aspheric intraocular lens of axial spherical aberration |
| CN111658232A (en) * | 2020-06-24 | 2020-09-15 | 西安眼得乐医疗科技有限公司 | Clinical decentration and tilt resistant intraocular lens |
-
2020
- 2020-11-25 CN CN202011333735.8A patent/CN112494175B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060030938A1 (en) * | 2003-03-31 | 2006-02-09 | Altmann Griffith E | Aspheric lenses and lens family |
| CN203208162U (en) * | 2013-04-22 | 2013-09-25 | 爱博诺德（北京）医疗科技有限公司 | Aspherical intraocular lens |
| CN206102780U (en) * | 2016-06-01 | 2017-04-19 | 西安浦勒生物科技有限公司 | Aspherical intraocular lens |
| CN106388974A (en) * | 2016-12-09 | 2017-02-15 | 天津世纪康泰生物医学工程有限公司 | Aspherical artificial lens capable of completely correcting mesopic vision |
| CN108078652A (en) * | 2017-01-06 | 2018-05-29 | 爱博诺德（北京）医疗科技有限公司 | Posterior chamber type has crystal eye intraocular lens |
| CN108078654A (en) * | 2017-07-28 | 2018-05-29 | 爱博诺德（北京）医疗科技有限公司 | The manufacturing method of intraocular lens and the intraocular lens using this method manufacture |
| CN208096842U (en) * | 2017-10-13 | 2018-11-16 | 天津世纪康泰生物医学工程有限公司 | Region spherical aberration profile astigmatism correction intraocular lens |
| CN109363802A (en) * | 2018-11-02 | 2019-02-22 | 无锡蕾明视康科技有限公司 | A kind of progressive modulation type aspheric intraocular lens of axial spherical aberration |
| CN111658232A (en) * | 2020-06-24 | 2020-09-15 | 西安眼得乐医疗科技有限公司 | Clinical decentration and tilt resistant intraocular lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367840A (en) * | 2021-08-12 | 2021-09-10 | 微创视神医疗科技(上海)有限公司 | Intraocular lens and method of making same |
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