CN103784298A - Head-mounted individualized eye aberration correcting and vision training device - Google Patents
Head-mounted individualized eye aberration correcting and vision training device Download PDFInfo
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Abstract
The invention provides a head-mounted individualized eye aberration correcting and vision training device which comprises a head-mounted image display system, an individualized high-order aberration corrector and a vision training system. The head-mounted image display system is used for displaying visual perception learning and training images with different space frequencies and contrast ratios; the individualized high-order aberration corrector is used for correcting low-order and high-order optical aberration of eyes; the vision training system is used for processing and displaying different visual perception learning tasks, and displaying the same to testees through an image display system to perform eye vision training. The head-mounted individualized eye aberration correcting and vision training device is compact in structure and convenient to carry and use; through correction of the high-order aberration of the eyes, people can acquire clearest visual stimulation which cannot be acquired by conventional low-order aberration correction by eyes, and single-eye/double-eye vision training is performed on this basis, so that vision training effects and eye visual functions are effectively improved.
Description
Technical field
A kind of wear-type customized human eye aberration correction visual exercise instrument that the present invention proposes belongs to optical technical field.
Background technology
The growth of mankind's vision has the process of a gradual perfection.When people is born, the growth of eyeball completes substantially.But, be no matter on dissecting, or in physiological function, all also do not grow perfectly completely, within postnatal considerable time, also grow continuing.The normal development of vision will possess two conditions: one is postnatal self-sow, growth course, and another is extraneous visual stimulus.At age of visual acuity critical period (0-7 year), if for a long time eyes are hidden, because the normal vision that there is no foreign objects picture stimulates, vision can not get due growth, and only rests on the level of low vision.
The function of eyeball is the key factor affecting one's power of vision.The optical characteristics of eyeball is not perfect, its performance is subject to the impact (D.R.Williams of the many factors such as diffraction, cornea and lenticular aberration, the scattering of aqueous humor of pupil, & Hofer, H..Formation and Acquisition of the Retinal Image.In:J.S.W.Leo M.Chalupa (Ed.) The Visual Neurosciences, the MIT Press, Cambridge, Massachusetts, London, England, 2003).
Generally speaking, the scattering of aqueous humor is negligible.When pupil is larger, aberration is larger, and diffraction is less; Hour, aberration is less for pupil, but diffraction is larger.Human eye aberration can be divided into again low order aberration and higher order aberratons, and wherein low order aberration is easy to be corrected, and correction for higher order aberrations is got up relatively difficult.
Recently, many researcheres (Geun-Young Yoon and David R.Williams, Visual Performance after correcting the monochromatic and chromatic aberrations of the eye, J.Opt.Soc.Am.A/Vol.19, No.2) adaptive optical technique (Adaptive Optics) is applied to the research of visual science, wishes to explore whereby the relation of higher order aberratons and normal person's vision and the limit of space vision.But, after all aberrations (low order and high-order) of rectification visual system, supervision be can realize, consistent conclusion (Marcos, S. do not drawn yet, Sawides, L., Gambra, E., & Dorronsoro, C., Influence of adaptive-optics ocular aberration correction on visual acuity at different luminances and contrast polarities.8:1-12,2008).
The growth of visual system normal function needs the participation (Chiu of visual experience, C., & Weliky, M., The Role of Neural Activity in the Development of Orientation Selectivity.In:J.S.W.Leo M.Chalupa (Ed.) The Visual Neurosciences, The Mit Press, Cambridge, Massachusetts, London, England, 2003).The growth of meticulous vision needs the meticulous growth of visual system, and this growth depends on the optical system of eyeball in the degree of knowing of retina image-forming.Under the combined effect of human eye higher order aberratons and diffraction, can not on retina, produce enough image clearly, due to the restriction of this clear picture degree, the high spatial frequency of the super image that only eyeball can produce on retina of cutoff spatial frequency that visual system can be differentiated.
Visual perception study reflection Adult Nervous System can greatly improve the ability to specific image identification after study, has reflected the plasticity of nervous system after growing up.Existing a lot of Experiment of Psychologies are found: adult is through study, success rate and speed (the Zhou YF of multiple visual perception task can be greatly improved, Huang CB, Xu PJ, Tao LM, Qiu ZP, Li XR and Lu ZL, Perceptual Learning Improves Contrast Sensitivity and Visual Acuity in Adults with Anisometropic Amblyopia.Vision Research, 46 (5): 739-750,2006).But, existing visual perception study adopts eyeglass to correct human eye low order aberration conventionally, under the combined effect of human eye higher order aberratons and diffraction, can not on retina, produce the image of sufficiently clear, owing to being subject to image and knowing the restriction of degree, simple visual perception study is limited to the improvement amplitude of human eye visual function.
In Chinese invention patent CN101947157A, a kind of human eye visual perception learning training instrument based on adaptive optics is proposed.This instrument for training adopts adaptive optical technique to measure in real time and correct human eye aberration, can provide visual stimulus clearly for human eye, but apparatus structure complexity, involves great expense, and inconvenience is used.
U.S. patent of invention US7, in 486,341B2, has proposed a kind of 3D display system of wear-type adjustable focus, adopts the variation of the liquid crystal microlens array mediator refraction of eye degree of adjustable focus, adopts liquid crystal panel to show the target of observing for people.This system structure compactness, but for correcting the comparatively complexity of liquid crystal microlens array of human eye aberration, and can only correct out of focus aberration, residual higher order aberratons affects the image quality of target on optical fundus.
In Chinese invention patent CN1971341A, a kind of contact lens that can proofread and correct human eye higher order aberratons and preparation method thereof is proposed.The method by eyeglass inner arrange or be prepared with can proofread and correct the phase place micro structure of human eye higher order aberratons or micro-structured component to correct the higher order aberratons of human eye.
Based on above-mentioned basis, the present invention proposes a kind of wear-type customized human eye aberration correction visual exercise instrument, realize and correct human eye low order and high-order optical aberration simultaneously by customized human eye aberration correction device, human eye can obtain traditional low order aberration and correct the most clear visual stimulus that cannot obtain, carry out on this basis the training of list/stereopsis vision, can effectively improve visual exercise effect and human eye visual function.And employing wear-type, simple in structure, easy to carry and use.
Summary of the invention
The technical problem that the present invention solves is: the present invention proposes a kind of wear-type customized human eye aberration correction visual exercise instrument, compact conformation of the present invention, easy to carry and use, correct human eye low order and high-order optical aberration by customized human eye aberration correction device simultaneously, human eye can obtain visual stimulus clearly, carry out on this basis the training of list/stereopsis vision, thereby effectively improve visual exercise effect and human eye visual function.
The technology of the present invention solution: a kind of wear-type customized human eye aberration correction visual exercise instrument, comprise: wear-type image display system, comprise micro display device, lens combination and control system, for the visual exercise image of display type, different contrast; Customized human eye aberration correction device, for correcting human eye low order and high-order optical aberration; And vision-training system, comprise video processing circuits and control system, for the treatment of with show different visual exercise tasks, and be shown to subjects by image display system, carry out human eye vision training.
Preferably, described micro display device can be liquid crystal display, plasma scope, electroluminescent display, OLED.
Preferably, described customized human eye aberration correction device is for correct human eye low order and high-order optical aberration simultaneously, and appliance can be spatial light modulator, phase type optics; Appliance can be transmission-type, can be also reflective; Appliance position can be non-Corneal Contact formula, can be also Corneal Contact formula.
Preferably, the training of described human eye vision can be simple eyely to carry out separately, also can carry out by eyes simultaneously.
Compared with prior art, the present invention proposes a kind of wear-type customized human eye aberration correction visual exercise instrument in the present invention, adopts wear-type, simple in structure, easy to carry and use; Correct human eye low order and high-order optical aberration by customized human eye aberration correction device simultaneously, human eye can obtain traditional low order aberration and correct the most clear visual stimulus that cannot obtain, carry out on this basis the training of list/stereopsis vision, thereby effectively improve visual exercise effect and human eye visual function.
Accompanying drawing explanation
Fig. 1 is composition structural principle block diagram of the present invention;
Fig. 2 is a kind of visual perception learning training schematic diagram of the present invention.
The specific embodiment
Further illustrate the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of wear-type customized human eye aberration correction visual exercise instrument that the present invention proposes is made up of micro display device 1, lens combination 2, living eyes aberration correction device 3, control system 5, video processing circuits 6.
The image that control system 5 is exported or video signal are presented on micro display device 1 through video processing circuits 6, image on micro display device 1 is imaged on human eye 4 optical fundus retinas through lens combination 2, between human eye 4 and lens combination 2, places living eyes aberration correction device 3.Living eyes aberration correction device 3 is customized human eye aberration correction devices of making according to the aberration data of human eye 4, can correct human eye low order and higher order aberratons simultaneously.Image on micro display device 1 after aberration correction device 3 on the retina of the optical fundus of human eye 4 blur-free imaging, thereby for human eye 4 provides visual stimulus clearly, control system 5 changes the stimulating image that is presented at micro display device 1 according to trainer's judgement, thereby this process carries out realizing visual perception learning training or fineness eyesight training repeatedly.
Micro display device 1 can be liquid crystal display, plasma scope, electroluminescent display, OLED.
Customized human eye aberration correction device 3 can be spatial light modulator, phase place micro-optical device; Appliance can be transmission-type, can be also reflective; Appliance position can be non-Corneal Contact formula, can be also Corneal Contact formula.
Visual exercise task can be visual perception learning training, fineness eyesight training.
Human eye vision training can be simple eyely to carry out separately, also can carry out by eyes simultaneously.
As shown in Figure 2, in training process each time, on screen, can there is in turn twice cross hairs, when cross hairs occurs, follow auditory tone cues.What and then each cross hairs occurred is likely blank figure, is likely target to be detected (edge is through the sinusoidal grating of Fuzzy Processing).After grating appears at first cross hairs, require subjects to press the left button report of wireless mouse.After grating appears at second cross hairs, require to press the right button report of wireless mouse.After button, can activate next training mission.Repeat said process, until all training missions finish, complete the visual perception learning training task of a day.
Visual perception learning training can adopt traditional " test → train → testing again " method, test respectively the contrast sensitivity curve of the forward and backward human eye of visual perception learning training, test altogether 8 kinds of spatial frequencys (0.6,1,2,4,8,16,24,36 cycles), the grating of different space frequency occurs at random.After test finishes, 8 kinds of spatial frequencys all will converge to subjects's human eye contrast threshold.According to subjects's situation that human eye contrast threshold changes under different space frequency, select a suitable spatial frequency (for example to train, can be according to known contrast sensitivity curve, the human eye contrast threshold of extrapolating a certain subjects is 0.5 o'clock corresponding spatial frequency).Visual perception learning training requires subjects under selected spatial frequency, completes at one time the training mission of some every day.In training, adopt and contrast threshold is measured similar adjusting method and trained, automatically choose the first day subjects and train rear final contrast threshold as the initial value of next day, the frequency of grating remains unchanged.
To sum up, the present invention proposes a kind of wear-type customized human eye aberration correction visual exercise instrument, adopts wear-type, simple in structure, easy to carry and use; Correct human eye low order and high-order optical aberration by customized human eye aberration correction device simultaneously, human eye can obtain traditional low order aberration and correct the most clear visual stimulus that cannot obtain, carry out on this basis the training of list/stereopsis vision, thereby effectively improve visual exercise effect and human eye visual function.
So far invention has been described in conjunction with the preferred embodiments.Should be appreciated that, those skilled in the art without departing from the spirit and scope of the present invention, can carry out various other change, replacement and interpolations.Therefore, scope of the present invention is not limited to above-mentioned specific embodiment, and should be limited by claims.
Claims (5)
1. a wear-type customized human eye aberration correction visual exercise instrument, its feature exists: in comprising wear-type image display system, comprise micro display device, lens combination and control system, for the visual exercise image of display type, different contrast; Customized human eye aberration correction device, for correcting human eye low order and high-order optical aberration; And vision-training system, comprise video processing circuits and control system, for the treatment of with show different visual exercise tasks, and be shown to wearer by image display system, carry out human eye vision training;
Image or the video signal of control system output are presented on micro display device through video processing circuits, and the image on micro display device is imaged on the retina of optical fundus through lens combination, places customized human eye aberration correction device between human eye and lens combination; Living eyes aberration correction device is the customized human eye aberration correction device of making according to the aberration data of human eye, can correct human eye low order and higher order aberratons simultaneously; Image on micro display device after aberration correction device on the retina of optical fundus blur-free imaging, thereby provide visual stimulus clearly for human eye; Control system changes the complexity that is presented at the stimulating image on micro display device according to wearer's judgement, thereby this process carries out realizing visual perception learning training or fineness eyesight training repeatedly.
2. wear-type customized human eye aberration correction visual exercise instrument according to claim 1, is characterized in that: described visual exercise instrument can be structure wear-type, helmet-type.
3. wear-type customized human eye aberration correction visual exercise instrument according to claim 1, is characterized in that: described micro display device can be liquid crystal display, plasma scope, electroluminescent display, OLED.
4. wear-type customized human eye aberration correction visual exercise instrument according to claim 1, is characterized in that: described personalized aberration correction device is used for correcting human eye low order and high-order optical aberration, can be spatial light modulator, phase type optics; Rectifying plate can be transmission-type, can be also reflective; Rectifying plate position can be Corneal Contact formula, can be also non-Corneal Contact formula.
5. wear-type customized human eye aberration correction visual exercise instrument according to claim 1, is characterized in that: described human eye vision training can simple eyely be carried out separately, also can carry out by eyes simultaneously.
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| CN104970954A (en) * | 2015-06-26 | 2015-10-14 | 李德一 | Comprehensive physical exercise device of antimetropia |
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| CN105662799A (en) * | 2015-12-31 | 2016-06-15 | 杨东生 | Binoculus visual balancing glasses |
| WO2019032611A1 (en) * | 2017-08-10 | 2019-02-14 | Facebook Technologies, Llc | Removable lens assembly for a head-mounted display |
| CN112754418A (en) * | 2021-01-08 | 2021-05-07 | 瑞尔明康(杭州)视光科技有限公司 | Portable binocular vision function training instrument |
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Application publication date: 20140514 |