CN103800183A - Myopia visual perception training system - Google Patents
Myopia visual perception training system Download PDFInfo
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- CN103800183A CN103800183A CN201210457072.XA CN201210457072A CN103800183A CN 103800183 A CN103800183 A CN 103800183A CN 201210457072 A CN201210457072 A CN 201210457072A CN 103800183 A CN103800183 A CN 103800183A
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Abstract
The invention belongs to the field of medical instruments and relates to a myopia visual perception training system. The myopia visual perception training system is formed by a high resolution display internally provided with a computer operation system chip and a ribbon loudspeaker as well as an eternally arranged wireless rocker device and a keyboard; the visual stimulation related to the visual functions is presented on the display screen by the internally arranged computer operation system and operating a Matlab, Psychotoolbox language-compiled training program, and a visual acutance threshold value is obtained. The visual acutance is repetitively trained by related visual identification tasks to increase the identification capability on a visual target of the myopia crowd under the naked eye state, so the vision is improved, the instruction language of the training program is clear and precise, the operation is simple and feasible, the result is clear and definite, a user can obtain the visual function level in real time, and the myopia visual perception training system is suitable for the myopia crowd with reduced naked-eye visual function as well as the amblyopia and hyperopia crowds.
Description
Technical field
The invention belongs to medical instruments field, relate to perceptual training technology, be specifically related to a kind of near-sighted visual perception training system, training system of the present invention is applicable to the myopia population that bore hole visual function declines, and is also applicable to amblyopia and hypermetropia crowd simultaneously.
Background technology
Perceptual training originates from cognitive neuroscience field, be the plastic behavior of brain visual cortex performance, wherein visual perception training refers to by repeating exercise and promotes and individual visual stimulus feature (as contrast, direction, locus, texture are distinguished etc.) is carried out to the meticulous process of distinguishing.In this process, individual visual discrimination ability obtains and improves, improve effect and can move in other visual discrimination tasks, and after still can keep high resolution in a very long time.In the time that visual function reduces, can help to improve resolving ability and then promote visual function by carrying out corresponding visual discrimination task training.
Myopia phenomenon is very general in China, and sickness rate is more and more higher trend, investigation shows, near-sighted phenomenon is except inherited genetic factors is as biology of its generation prerequisite, main also due to have daily long between at the moment, do not form good by eye custom, as caused depending on environmental factorss such as thing near distances.At present, improve the method for near-sighted visual function and can take to join the method such as mirror, operation, but those methods to the refractive diopter that improves bore hole visual function and control progressivity myopia without treatment meaning.
Summary of the invention
The object of this invention is to provide a kind of safe and effective, easy to operate, acceptable, near-sighted visual perception training system that compliance is high, especially can improve the visual perception training system of myopia population bore hole visual function.
Visual perception training system of the present invention is made up of built-in computer operating system chip and the high accuracy display screen of silk ribbon speaker and external wireless joystick device and keyboard.
In the present invention, satisfied 1024 × 768 resolution, the refresh rate that is not less than 60Hz and 8 bit-depths of being not less than of described display screen, the exterior bottom bracket of display screen and suspension undercut, the embedded support loading calculation of computer operating system chip machine language Visual Basic, Matlab and Psychotoolbox compiler, support Bluetooth technology transmission means.
In the present invention, user operation keyboard, on display screen, pass through computer operating system built-in in chip and operation Matlab, the training program of Psychotoolbox language compiling, on display screen, present the visual stimulus relevant to specific visual function, as English alphabet E, letter C, Chinese character, square-wave grating, sinusoidal grating etc., the user successively feature to the visual stimulus presenting (as direction) carries out the rocking bar operation of wireless joystick device, when the size (letter or Chinese character) of visual stimulus or density (grating) operate during at par 3 times correctly visual stimulus diminish (letter or Chinese character) or become close (grating), if operate mistake 1 time in the time of par, visual stimulus becomes large (letter or Chinese character) or becomes dredges (grating), send feedback prompt tone with speaker, this is for forming a reversal point.Occur that training finishes after 10 reversal points when every group, and obtain according to the visual stimulus size (letter or Chinese character) of rear 6 reversal points or density (grating) average level the Snazzi degree threshold value (alphabetical vision or grating vision) that an accuracy of this group is 79.4%.Repeat successively the Snazzi degree threshold value that similar operation can obtain more groups, variation that can every group of Snazzi degree threshold value of Real Time Observation.
In the present invention, described visual stimulus is the matrix numerical value being compiled by function in computer language Matlab, and the staircase method presentation modes on 3 times 1 and data statistics realize by Matlab and Psychtoolbox compiling function operation, and the compiling function of presentation modes is:
The compiling function of data statistics is:
The present invention has following advantage:
1, the present invention adopts the perceptual learning principle in cognitive neuroscience field, thereby is distinguished task duplication training Snazzi degree and then increased the raising that under myopia population bore hole state, the resolving ability of sighting target is reached vision by multi view.
2, the instruction of training program is short and sweet, and operation is simple, result clear and definite, and user can obtain the visual function level of oneself in real time.
3, when display screen is put, can hang, can horizontal, give tacit consent to 4 meters of remote training, owing to adopting Wireless Keyboard and the operation of rocking bar device, training distance can also be changed according to place restriction, is convenient to the use under varying environment.And myopia is more common in, and close eye is too much, the obvious crowd of asthenopia, remote training can alleviating asthenopia, is conducive to retarding myopia refractive diopter progress.
For the ease of understanding, below by concrete drawings and Examples, near-sighted perceptual training system of the present invention is described in detail.It needs to be noted, instantiation and accompanying drawing are only in order to illustrate, obviously those skilled in the art can, according to explanation herein, make various corrections and change to the present invention within the scope of the invention, and these corrections and change are also included in scope of the present invention.
Accompanying drawing explanation
Fig. 1 is the part visual stimulus figure the present invention relates to.
Fig. 2 is the present invention's myopia perceptual training system implementation schematic diagram.
Fig. 3 is the direction identification training program schematic diagram carrying out about letter e size variation of Matlab language compiling.
Fig. 4 is while operating in formed objects level, the displayed map of letter e.
Fig. 5 is that accuracy is 79.4% letter e Snazzi degree threshold figure.
The specific embodiment
Embodiment 1
Adopt the high accuracy display screen of built-in computer operating system chip and silk ribbon speaker and external wireless joystick device and keyboard to form near-sighted perceptual training system of the present invention, wherein satisfied 1024 × 768 resolution, the refresh rate that is not less than 60Hz and 8 bit-depths of being not less than of display screen, exterior bottom bracket and suspension undercut, the embedded support loading calculation of computer operating system chip machine language Visual Basic, Matlab and Psychotoolbox compiler, support Bluetooth technology transmission means.This near-sighted perceptual training system is mainly used in myopia population and improves the real effect of naked vision and be applicable to amblyopia and hypermetropia crowd.
When practical operation, user operation keyboard, on display screen, by computer operating system operation Matlab built-in in chip, the training program of Psychotoolbox language compiling, recall the direction identification training program (as shown in Figure 3) of carrying out about letter e size variation of Matlab language compiling by inputting " Eletter training " at Matlab command boxe.After program operation, on display screen, present one of the letter e of specific size, user operate wireless rocking bar device indicates its opening direction, each direction is all change at random, when operating 3 correct letter es by a step value of 0.03 log unit decline of an above horizontal size in formed objects level, when time wrong letter e of operation in formed objects level is by a step value of 0.03 log unit rising of an above horizontal size, send feedback prompt tone with speaker, now form a reversal point (as shown in Figure 4).When occurring program end of run after 10 reversal points, be one group of training, and the letter e Snazzi degree threshold value (as shown in Figure 5) that is 79.4% according to the average rear accuracy that obtains this group of letter e size level of rear 6 reversal points.Continue to train the operation of repetitive routine, can obtain the Snazzi degree threshold value of more groups of numbers, operator is according to the variation of every group of Snazzi degree threshold value Real Time Observation vision level obtaining.Repeatedly repetition training letter e direction identification task, final letter e vision can improve, and this is telecommute simultaneously, avoids occurring asthenopia, and retarding myopia number of degrees negativity is deepened.
Claims (5)
1. a near-sighted visual perception training system, is characterized in that, is made up of built-in computer operating system chip and the high accuracy display screen of silk ribbon speaker and external wireless joystick device and keyboard;
Satisfied 1024 × 768 resolution, the refresh rate that is not less than 60Hz and 8 bit-depths of being not less than of described display screen, the embedded support loading calculation of computer operating system chip machine language Visual Basic, Matlab and Psychotoolbox compiler, support Bluetooth technology transmission means.
2. by near-sighted visual perception training system claimed in claim 1, it is characterized in that the exterior bottom bracket of described display screen and suspension undercut.
3. by near-sighted visual perception training system claimed in claim 1, it is characterized in that, on described display screen, present the visual stimulus relevant to visual function by the training program of computer operating system built-in in described chip and the compiling of operation Matlab, Psychotoolbox language, and obtain Snazzi degree threshold value.
4. by near-sighted visual perception training system claimed in claim 3, it is characterized in that, the described visual stimulus relevant to visual function is English alphabet E, letter C, Chinese character, square-wave grating or sinusoidal grating.
5. by near-sighted visual perception training system claimed in claim 3, it is characterized in that, the matrix numerical value that described visual stimulus is compiled by function in computer language Matlab, the staircase method presentation modes on 3 times 1 and data statistics are realized by Matlab and Psychtoolbox compiling function operation
Wherein, the compiling function of presentation modes is:
The compiling function of data statistics is:
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| CN108742499A (en) * | 2018-03-23 | 2018-11-06 | 科飞云视（天津）高新科技有限公司 | A kind of detection method of the sinusoidal grating sensing capability based on intensification modulation |
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| CN108742499A (en) * | 2018-03-23 | 2018-11-06 | 科飞云视（天津）高新科技有限公司 | A kind of detection method of the sinusoidal grating sensing capability based on intensification modulation |
| CN108742500A (en) * | 2018-03-23 | 2018-11-06 | 科飞云视（天津）高新科技有限公司 | A kind of detection method of the sinusoidal grating sensing capability based on contrast modulation |
| CN108742502B (en) * | 2018-03-23 | 2020-05-22 | 科飞云视（天津）高新科技有限公司 | Detection method for brightness-modulated motion sinusoidal grating perception capability |
| CN108742499B (en) * | 2018-03-23 | 2020-07-10 | 科飞云视（天津）高新科技有限公司 | Detection method of sinusoidal grating perception capability based on brightness modulation |
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