CN109828385A - Personalized full-contact hard corneal contact lens production method - Google Patents
Personalized full-contact hard corneal contact lens production method Download PDFInfo
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- CN109828385A CN109828385A CN201811612644.0A CN201811612644A CN109828385A CN 109828385 A CN109828385 A CN 109828385A CN 201811612644 A CN201811612644 A CN 201811612644A CN 109828385 A CN109828385 A CN 109828385A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 230000004075 alteration Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 26
- 210000004087 cornea Anatomy 0.000 claims abstract description 23
- 238000013461 design Methods 0.000 claims abstract description 22
- 238000012937 correction Methods 0.000 claims abstract description 21
- 238000012876 topography Methods 0.000 claims abstract description 17
- 230000003044 adaptive effect Effects 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 claims abstract 2
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000005457 optimization Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 abstract description 11
- 238000003754 machining Methods 0.000 abstract description 7
- 230000004423 myopia development Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000004438 eyesight Effects 0.000 abstract description 3
- 241000209094 Oryza Species 0.000 description 7
- 235000007164 Oryza sativa Nutrition 0.000 description 7
- 208000001491 myopia Diseases 0.000 description 7
- 235000009566 rice Nutrition 0.000 description 7
- 230000004379 myopia Effects 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000036040 emmetropia Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 201000009487 Amblyopia Diseases 0.000 description 1
- 206010020675 Hypermetropia Diseases 0.000 description 1
- 201000002287 Keratoconus Diseases 0.000 description 1
- 208000029091 Refraction disease Diseases 0.000 description 1
- 206010047571 Visual impairment Diseases 0.000 description 1
- 230000004430 ametropia Effects 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004305 hyperopia Effects 0.000 description 1
- 201000006318 hyperopia Diseases 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004515 progressive myopia Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 208000014733 refractive error Diseases 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004382 visual function Effects 0.000 description 1
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Abstract
The present invention relates to personalized full-contact hard corneal contact lens production method, including lens design and machining eyeglass, lens design: the curvature and height map of anterior surface of cornea are obtained using corneal topography, the lens posterior surface face type with cornea Full connected is designed with this；With the best Correction Strategies of adaptive optics higher order aberratons refraction system measurement personalized eye aberration, and the thickness and face type for meeting personalized eye aberration correction eyeglass are obtained by computer software joint lens posterior surface face type；Machining eyeglass: using front-back face type and thickness as input parameter when machining eyeglass, processing and fabricating eyeglass.The method of the present invention can get the personalized eye aberration correction eyeglass completely attached to cornea, eccentricity issues during assembling and wear so as to avoid eyeglass, contact lense can be effectively prevent to the twist distortion of cornea, it can be improved the effect that eyeglass is corrected defects of vision, preferably improve visual quality, visual performance is improved, the development of myopia is controlled.
Description
Technical field
The present invention relates to contact lense production method technical fields, more particularly to personalized full-contact hard corneal contact lens
Production method.
Background technique
In China, in development trend that is high-incidence and becoming younger, and at present, the rate of myopia in China is that the whole world is the first to myopia.Myopia
Bring visual problem directly affects daily life and quality of life.It may be said that myopia not only makes the health of citizen
At threat, immeasurable threat equally is also resulted in a country and national future.And myopia and other ametropia be
A kind of irreversible dysopia can not cure once after generation, can only be controlled or be intervened by certain means.
Current the most frequently used, most popular intervention means have optics intervention, including frame eyeglasses and contact lense etc..
Although frame eyeglasses can myopia correction, but can not effectively control myopia development.With lens design
The development of technology, it is considered that peripheral hyperopia is the main reason for causing myopia progression.Frame eyeglasses have scaling in kind simultaneously
Untrue property；And it is difficult to ensure that the center of lens of assembly is exactly pupil center, to there is assembly position error.Cornea is hard
Property contact lense there are the advantages such as convenient beauty, and it is weak particularly suitable for near-sighted prevention and control, keratoconus, height ametropic
Depending on rescuing for, height anisometropic amblyopia etc.；But contact lense can cause anterior corneal surface not while promoting visual quality
Rule, actinomorphy reduce, and astigmatism is serious, stop wearing posterior corneal surface and are gradually recovered normally, and wherein chief reason is exactly to connect
Touching mirror has extrusion process to cornea, causes cornea tissue distortion movement, thus to suit or adapt to eyeglass face type.This extruding
As a result, increase the contact zone of cornea and eyeglass, but equally there is also Disengagement zone, the dynamic that will ultimately result in lens position becomes
Change, and is influenced by tear film and lid pressure.Meanwhile there is also position errors for contact lens.
In addition, no matter frame eyeglasses or contact lense, can all occur the movement of eccentricity of glasses lens during wearing, lead to pupil
Hole center-spot can not be consistent with center of lens, and then aggravate the development of myopia.Moreover correcting lens all at present are all
Low order aberration can only be corrected, personalized aberration correction can not be implemented；And these correcting lens all only axially meet it is complete rectify or
Correction is emmetropia, and cannot all be corrected in other regions as emmetropia.
And to solve the above problems, a kind of full-contact eyeglass for meeting personalized eye aberration correction must be just designed,
Anterior corneal surface can be suited completely, to avoid eccentricity of glasses lens, position error, the defects of distorting cornea, and correction is personalized
The influence of aberration especially higher order aberratons.
Firstly, it is necessary to anterior corneal surface curvature distribution be obtained by corneal topography, as morphological parameters.And corneal topography
With computer software (Sun Ran, the clinical application [J] of computer corneal topography for calculating contact mirror curvature and refractive power reading
Chinese Journal of Practical Ophthalmology, 1995,13 (12): 718.), but this calculating process by corneal topography is to improve and connect
The accuracy that mirror is worn is touched, is not the eyeglass face type that design suits completely with cornea.
Then, the best Correction Strategies that human eye aberration is obtained by adaptive optics higher order aberratons refraction system, for setting
The contact lense of aberration correction needed for counting.Currently, adaptive optical technique is mainly used for retina high-resolution imaging and visual function
In research.And in the personalized contact lense design aspect based on adaptive optical technique, it is mainly based upon adaptive optical technique
In Wavefront sensor obtain single frames or average aberration, to construct personalized eye model, design based on this meets
Aspherical face type (research [D] of customized human eye vision correcting of the Wang Nan based on phantom eye of property aberration corrective lens
Jilin University, 2011.) and free form surface (Wang Zhaoqi, Kong Qiang, Li Rui, He Yuanqing, Liu Yongji, Kong Xiangming are based on wave front technology
Free form surface glasses design method [P] Chinese patent: CN102914879A, 2013.).And this single frames or average eye
Aberration does not meet the dynamic change of aberration and the adaptability of visual system and insensitivity.The U.S. in 2013
The Yoon of Rochester university proposes a kind of system and method (Yoon G.System for designing Wavefront leading contact lense
and method for designing wavefront-guided ophthalmic lenses[P].PCT/US2013/
022507,2013-1-22.), the rear surface of contact lense is processed according to the topographic map of anterior surface of cornea in this method, and personalization is set
During meter with the offset of contact lense and rotate to be variable come seek higher order aberratons best Correction Strategies and eyeglass it is best
Position, evaluation index are influence of the higher order aberratons to retina image quality, do not account for visual system to visual quality
It influences.So there is presently no design to meet personalized eye aberration correction based on adaptive optics higher order aberratons refraction system
Contact lense.
Summary of the invention
The present invention is intended to provide personalized full-contact hard corneal contact lens production method, can get personalized eye aberration
The full-contact hard contact eyeglass of correction.
In order to achieve the above objectives, The technical solution adopted by the invention is as follows:
Personalized full-contact hard corneal contact lens production method, including Step 1: lens design；Including following step
Suddenly；
Step 1.1, the curvature and height map that anterior surface of cornea is obtained by corneal topography, are designed and cornea Full connected
Lens posterior surface face type S2；The best correction plan of personalized eye aberration is obtained by adaptive optics higher order aberratons refraction system
Slightly；
Step 1.2, according to the rear surface face type S of eyeglass2With the best Remedy strategy of personalized eye aberration, computer is utilized
Software simulation, optimization obtain the thickness d and front surface face type S of eyeglass1。
Further, in step 1.2, the best Remedy strategy of personalized eye aberration is A, the then wavefront slope for needing to correct
For G, G=DA, wherein D is Zernike multinomial corresponding with A.Computer software simulation, optimization process are exactly to pass through directional light
The wavefront slope of acquisition-G after designed eyeglass, so that optimization obtains thickness d and the front surface face of personalized full-contact eyeglass
Type S1。
Preferably, the corneal topography is area of computer aided type corneal topography.
Wherein, the adaptive optics higher order aberratons refraction system includes Shark-Hartman Wavefront sensor, distorting lens
With optical path return portion.
Further, in the step 1 by the way of the positioning of rice word, the anchor point is at the edge in vain of corneosclera
Place.
Further, personalized full-contact hard corneal contact lens production method further includes Step 2: machining eyeglass: will
The processing and fabricating of eyeglass, the design parameter are completed in the design parameter input 3D printer or excimer laser device of eyeglass
Including S1、S2And d.
Further, the angle in the step 2 by the way of the positioning of rice word, when the eyeglass of production is to measure in rice word
Distance for assembly and wears anchor point to corneoscleral limbus in vain.
Compared with prior art, the invention has the following advantages:
The method of the present invention can get the personalized eye aberration correction eyeglass completely attached to cornea, so as to avoid eyeglass dress
Eccentricity issues during matching and wearing can effectively prevent contact lense to the twist distortion of cornea, can be improved eyeglass correction view
The effect of power preferably improves visual quality, improves visual performance, controls the development of myopia.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
As shown in Figure 1, personalization full-contact hard corneal contact lens production method disclosed by the invention, including eyeglass are set
Meter and machining eyeglass.Wherein lens design is by computer software, corneal topography and adaptive optics higher order aberratons refraction system
It is responsible for completion.Corneal topography is area of computer aided type corneal topography, to design the rear surface face type of spectacle lens.It is described from
Adaptive optics higher order aberratons refraction system includes Shark-Hartman Wavefront sensor, distorting lens and optical path return portion, can be obtained
Wave front aberration distribution and wavefront best Correction Strategies of the human eye under 6mm pupil are obtained, the wavefront for needing to correct for designing eyeglass.
Machining eyeglass process contains material and technique.
In the ophthalmic lens design stage, and using rice word as position line, it is first determined angle is consolidated in rice word anchor point on cornea
Film edge distance in vain, and the curvature and height map of anterior surface of cornea are obtained by corneal topography, go out in this, as basic engineering
Lens posterior surface face type S2；
Then, on the basis of rice word anchor point, personalized eye picture is measured based on adaptive optics higher order aberratons refraction system
The best Correction Strategies of difference, the best Correction Strategies indicate that the wavefront slope for then needing to correct is G, G=with Zernike coefficient A
DA, wherein D is Zernike multinomial corresponding with A.
Finally, keeping the wavefront of directional light acquisition-G after designed eyeglass oblique by computer software simulation, optimization process
Rate, so that optimization obtains the thickness d and front surface face type S of personalized full-contact eyeglass1.The eyeglass and angle that this method is designed
Film front surface face type fits like a glove, to the distortionless deformation of cornea.
In the machining eyeglass stage, by the S of design phase acquisition1、S23D glass printer or excimer laser are inputted with d
The production of eyeglass is completed in cutter.Made eyeglass still to measure when rice word in corneosclera edge in vain distance for dress
Match and wear anchor point, guarantee that pupil center is optical center of lens, the eyeglass size of all directions be corneosclera edge it is white-light
The heart-white the distance in corneosclera edge.
The present invention designs lens posterior surface face type by corneal topography, and passes through the optometry of adaptive optics higher order aberratons
System obtains the best Remedy strategy of personalized eye aberration, obtains eyeglass by computer software simulation, optimization in this case
Thickness d and front surface face type S1, to design the personalized full-contact hard contact eyeglass to correct aberration；It connects
The production of input parameter completion eyeglass when making the face type of the eyeglass and thickness as 3D.
The present invention can design the personalized eye picture completely attached to cornea by corneal topography and eye Wavefront detecting
Poor corrective lens, the eccentricity issues during assembling and wear so as to avoid eyeglass, avoids eyeglass to the twisted shape of cornea
Become.In this case, it can be improved the effect that eyeglass is corrected defects of vision, preferably improve visual quality, improve visual performance, control
The development of myopia.
Certainly, the present invention can also have other numerous embodiments, without deviating from the spirit and substance of the present invention,
Those skilled in the art can make various corresponding changes and modifications, but these corresponding changes and change according to the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612644.0A CN109828385A (en) | 2018-12-27 | 2018-12-27 | Personalized full-contact hard corneal contact lens production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811612644.0A CN109828385A (en) | 2018-12-27 | 2018-12-27 | Personalized full-contact hard corneal contact lens production method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811612644.0A Pending CN109828385A (en) | 2018-12-27 | 2018-12-27 | Personalized full-contact hard corneal contact lens production method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111820862A (en) * | 2020-07-10 | 2020-10-27 | 温州医科大学 | A personalized evaluation method and design method of scleral lens fit based on OCT image modeling guidance |
| CN114047643A (en) * | 2021-11-26 | 2022-02-15 | 上海艾康特医疗科技有限公司 | Method for preparing hard contact lens |
| WO2022216505A1 (en) * | 2021-04-06 | 2022-10-13 | Innovega, Inc. | Automated contact lens through image capture of the eye |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4525044A (en) * | 1983-05-05 | 1985-06-25 | Bauman Robert C | Soft contact lens with surface identification and method of using same |
| US20060244903A1 (en) * | 2005-02-23 | 2006-11-02 | Ming Ye | Toric lens design |
| CN102171600A (en) * | 2008-09-30 | 2011-08-31 | 庄臣及庄臣视力保护公司 | Lens design simplification process |
| CN102508944A (en) * | 2011-10-10 | 2012-06-20 | 沈阳理工大学 | Corneal surface shape fitting method |
| CN102914879A (en) * | 2012-11-06 | 2013-02-06 | 天津宇光光学公司 | Design method of free-form surface glasses based on wave-front technology |
-
2018
- 2018-12-27 CN CN201811612644.0A patent/CN109828385A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4525044A (en) * | 1983-05-05 | 1985-06-25 | Bauman Robert C | Soft contact lens with surface identification and method of using same |
| US20060244903A1 (en) * | 2005-02-23 | 2006-11-02 | Ming Ye | Toric lens design |
| CN102171600A (en) * | 2008-09-30 | 2011-08-31 | 庄臣及庄臣视力保护公司 | Lens design simplification process |
| CN102508944A (en) * | 2011-10-10 | 2012-06-20 | 沈阳理工大学 | Corneal surface shape fitting method |
| CN102914879A (en) * | 2012-11-06 | 2013-02-06 | 天津宇光光学公司 | Design method of free-form surface glasses based on wave-front technology |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111820862A (en) * | 2020-07-10 | 2020-10-27 | 温州医科大学 | A personalized evaluation method and design method of scleral lens fit based on OCT image modeling guidance |
| CN111820862B (en) * | 2020-07-10 | 2023-07-21 | 温州医科大学 | A Personalized Scleroscope Adaptability Evaluation Method and Design Method Based on OCT Image Modeling Guidance |
| WO2022216505A1 (en) * | 2021-04-06 | 2022-10-13 | Innovega, Inc. | Automated contact lens through image capture of the eye |
| US12186017B2 (en) | 2021-04-06 | 2025-01-07 | Innovega, Inc. | Automated contact lens design through image capture of the eye |
| CN114047643A (en) * | 2021-11-26 | 2022-02-15 | 上海艾康特医疗科技有限公司 | Method for preparing hard contact lens |
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