CN101229052A - Amendment of wave aberration data in individual visualness-rectifying - Google Patents
Amendment of wave aberration data in individual visualness-rectifying Download PDFInfo
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- CN101229052A CN101229052A CNA2007100565011A CN200710056501A CN101229052A CN 101229052 A CN101229052 A CN 101229052A CN A2007100565011 A CNA2007100565011 A CN A2007100565011A CN 200710056501 A CN200710056501 A CN 200710056501A CN 101229052 A CN101229052 A CN 101229052A
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Abstract
Based on a personalized human eye model, the invention carries out correction on the wave aberration data acquired through measurement to guide a visual rectification under natural light, belonging to a technical field of visual rectification. The invention uses the data of the wavefront aberration for human eyes, the cornea characteristic parameter and the radial distance between each part in the eyes to construct the personalized human eye model, then changes the working wavelength as well as the refractive index and dispersion coefficients for each medium in the eyes in the personalized human eye model to acquire the data for the defocus, astigmatism and high-order aberration under monochromatic light of any wavelength and the natural light, and carries out correction on the wave aberration data according to the difference. The personalized correction on the wave aberration data can guide the visual rectification under the natural light more accurately, and fully considers the actual optical characteristics of personal human eyes.
Description
Technical field
The invention belongs to the vision correcting technical field.
Background technology
In recent years, along with the continuous development of aberration of human eye measuring technique, wave aberration is more and more paid close attention to by people as a kind of important evidence of correcting human eye out of focus, astigmatism and senior aberration.
At present, the Hartmann-Shack Wavefront sensor is widely used for measuring the wave aberration of human eye.Wave aberration is to measure under specific monochromatic light, is the natural light world and human eye is seen usually, and wave aberration can not fully be described the reflection characteristic of human eye to the natural light world, also just can not be directly used in the vision correcting under the natural light.In order to obtain gratifying visual effect under natural light, when the wave aberration data of measuring were used for vision correcting, people added an adjustment amount empirically on the data of out of focus.
Yet, when the monochromatic wavelength of measuring wave aberration not simultaneously, the adjustment amount of out of focus is also inequality.And under identical measurement wavelength, for different individual human eyes, the adjustment amount of out of focus is also incomplete same.Therefore, very inaccurate for the correction of out of focus.In addition, the correction to wave aberration at present is only limited to one of out of focus, and the correction of astigmatism and senior aberration yet there are no report.
Summary of the invention
The purpose of this patent is that human eyes wave-front optical aberration, cornea characteristic parameter and the ophthalmic each several part axial spacing data with actual measurement are the fundamental construction lens structure, thereby further make up personalized human-eye model, in this human-eye model, change the refractive index of operation wavelength and each medium of ophthalmic, ray tracing function by optical design software Zemax, obtain monochromatic light and out of focus natural light under, astigmatism and the senior aberration of human eye, thereby realize the correction of these aberrations at different wave length.
This invention has following function and advantage:
Function one, the wavefront aberration data of known actual human eye, cornea characteristic parameter and ophthalmic each several part axial spacing data, utilization optical design software Zemax makes up personalized human-eye model.
Function two, the refractive index of change operation wavelength and each medium of ophthalmic in the personalized human-eye model that makes up obtains out of focus, astigmatism and the senior aberration of human eye under the monochromatic light of different wave length.
Function three based on personalized human-eye model, is set at natural light with the operation wavelength of eye model, and sets the refractive index and the abbe number of each medium of ophthalmic according to natural light, obtains out of focus, astigmatism and the senior aberration of human eye under natural light.
Concrete technical scheme
The technical scheme of this invention comprises following main aspect:
One is accurately measured the cornea front and rear surfaces shape of individual human eye by the medical cornea activity mapping instrument, carries out the shape match with the high order aspheric surface function and is placed in the eye model; Measure the axial width of each several parts such as human eye's anterior chamber, crystalline lens, vitreous body with medical A-mode ultrasonic wave technology, these thickness are imported in the eye model as optical interval; Lenticular surface configuration is optimized, makes the wave aberration of full eye equate with the actual wave aberration that personnel selection glances wavefront aberrometer measures.
Its two, in the personalized human-eye model that makes up, change the refractive index of operation wavelength and each medium of ophthalmic, obtain out of focus, astigmatism and the senior aberration of human eye under the monochromatic light of different wave length.
Its three, the operation wavelength of eye model is set at natural light, and sets the refractive index and the abbe number of each medium of ophthalmic according to natural light, obtain out of focus, astigmatism and the senior aberration of human eye under natural light.
Description of drawings
Accompanying drawing 1 is the correction flow chart of customized vision correcting medium wave aberration data of the present invention.
Specify embodiments of the present invention below in conjunction with accompanying drawing.
Concrete embodiment
As shown in Figure 1, Hartmann-Shack Wavefront sensor [1] is used for measuring the wave aberration of human eye, and the wave aberration data of individual human eye are joined in the majorized function of optical design software Zemax, defines the actual wave aberration of human eye with this.
Corneal topographer Orbscan II[2] be used for measuring corneal curvature and cornea front and rear surfaces height value with respect to the reference sphere.Anterior corneal surface is converted into vertically difference in height along the difference in height of radius vector direction, simulates the non-spherical surface of cornea with the high order aspheric surface function.
A-mode ultrasonic calibrator [3] is used for measuring the each several part spacing of axis oculi, comprises cornea front and rear surfaces spacing, the camera oculi anterior degree of depth, lens thickness and Vitrea thickness.
The ophthalmic optical system comprises that cornea, aqueous humor, crystalline lens and Vitrea refractive index are provided by the Cauchy formula with the rule [4] of wavelength change.
The face type of crystalline lens [5] is set to Ze Nike rise face, optimizes lenticular front and rear surfaces, makes the wave aberration of full eye equate with the actual wave aberration that personnel selection glances wavefront aberrometer measures.Personalized human-eye model [6] made up and finished this moment.
Change the operation wavelength of eye model, the refractive index and the abbe number of each medium of ophthalmic, utilize the ray tracing function of Zemax, obtain out of focus, astigmatism and the senior aberration [8] of human eye under any monochromatic wave long [7] and natural light, thereby realize the correction [9] of wave aberration data.
Claims (3)
1. the correction based on wave aberration data under the natural light of personalized human-eye model comprises cornea, crystalline lens and amphiblestroid structure.It is characterized in that: the wave front aberration by personalized human-eye model full glances aberration that gets and the actual human eye that measures with wavefront analyzer equates.
2. require described correction based on wave aberration data under the natural light of personalized human-eye model according to right 1, it is characterized in that: the ray tracing function by Zemax software can obtain out of focus, astigmatism and the senior aberration of human eye under any wavelength monochromatic light.
3. require described correction according to right 1 based on wave aberration data under the natural light of personalized human-eye model, it is characterized in that: the ray tracing function by Zemax software can obtain out of focus, astigmatism and the senior aberration of human eye under natural light, thereby realizes the correction of wave aberration data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100565011A CN101229052A (en) | 2007-01-23 | 2007-01-23 | Amendment of wave aberration data in individual visualness-rectifying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100565011A CN101229052A (en) | 2007-01-23 | 2007-01-23 | Amendment of wave aberration data in individual visualness-rectifying |
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| CN101229052A true CN101229052A (en) | 2008-07-30 |
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| CNA2007100565011A Pending CN101229052A (en) | 2007-01-23 | 2007-01-23 | Amendment of wave aberration data in individual visualness-rectifying |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957502A (en) * | 2010-08-31 | 2011-01-26 | 吉林大学 | Design method of individualized cornea contact lens |
| CN103142210A (en) * | 2013-02-26 | 2013-06-12 | 温州医学院 | Peripheral refraction measuring method based on OCT technology |
| CN112493983A (en) * | 2020-12-02 | 2021-03-16 | 上海美沃精密仪器股份有限公司 | Method for indirectly analyzing wavefront aberrations of inside and outside human eyes and whole eyes |
| CN114305858A (en) * | 2020-09-30 | 2022-04-12 | 施温德眼科技术解决方式有限公司 | Method for providing control data for an ophthalmic surgical laser of a treatment device |
| CN115336967A (en) * | 2022-09-19 | 2022-11-15 | 南开大学 | Method for obtaining retinal morphology |
-
2007
- 2007-01-23 CN CNA2007100565011A patent/CN101229052A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957502A (en) * | 2010-08-31 | 2011-01-26 | 吉林大学 | Design method of individualized cornea contact lens |
| CN103142210A (en) * | 2013-02-26 | 2013-06-12 | 温州医学院 | Peripheral refraction measuring method based on OCT technology |
| CN103142210B (en) * | 2013-02-26 | 2015-03-18 | 温州医学院 | Peripheral refraction measuring method based on OCT technology |
| CN114305858A (en) * | 2020-09-30 | 2022-04-12 | 施温德眼科技术解决方式有限公司 | Method for providing control data for an ophthalmic surgical laser of a treatment device |
| CN112493983A (en) * | 2020-12-02 | 2021-03-16 | 上海美沃精密仪器股份有限公司 | Method for indirectly analyzing wavefront aberrations of inside and outside human eyes and whole eyes |
| CN112493983B (en) * | 2020-12-02 | 2022-09-16 | 上海美沃精密仪器股份有限公司 | Method for indirectly analyzing wavefront aberrations of inside and outside human eyes and whole eyes |
| CN115336967A (en) * | 2022-09-19 | 2022-11-15 | 南开大学 | Method for obtaining retinal morphology |
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