Human eye adaptive optical visual perception training method and apparatus thereof
Abstract
Human eye optical visual perception adaptive training method comprising: a human eye wave aberration measurement subsystem for measuring the human eye wave aberration of a person to be examined; a human eye wave aberration correction subsystem for driving and controlling the wavefront corrector for correcting the human eye wave aberration of the person to be examined based on the measured human eye wave aberration of the person examined; and a visual perception training subsystem for processing and displaying the observation targets of different spatial frequencies and different contrasts, and presenting the observation targets to the examinee, to conduct a visual function measurement process of the human eye and a process of training perception.

Term
4 yearsleft in the term
Expires 13 September 2030.
- Priority
- Filed
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- Today
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9 claims: 2 independent, 7 dependent
- 1REIVINDICACIONES l. Un método de entrenamiento adaptativo de la percepción visual óptica del ojo humano, que comprende el paso de:un paso de medición de la aberración de onda del ojo humano para medir la aberración de onda del ojo humano de una persona que va a ser examinada usando una fuente de luz de referencia de infrarrojo cercano, un corrector de frente de onda y un sensor de frente de onda;un paso de corrección de la aberración de onda del OJO humano para conducir y controlar el corrector de frente de onda para corregir la aberración de onda del ojo humano de la persona que va a ser examinada en base a la aberración de onda del ojo humano medida de la persona examinada;y un paso de entrenamiento de la percepción visual para visualizar en una pantalla objetivo de observación los objetivos de observación de distintas frecuencias espaciales y distintos contrastes después de que han sido sujetos a procesamiento en un circuito de procesamiento de vídeo, y que presentan los objetivos de observación a la persona examinada a través del corrector de frente de onda controlado y dirigido, para conducir un proceso de medición de la función visual del ojo humano y un proceso de entrenamiento de la percepción visual.
- 2El método de entrenamiento adaptativo de la percepción visual óptica del ojo humano de acuerdo con reivindicación 1, en donde el proceso de medición de la función visual del ojo humano consiste en una medición del umbral de contraste del ojo humano, donde la dificultad del estímulo se ajusta en tiempo real en respuesta a la respuesta de la persona examinada de acuerdo con el método de ajuste de psicofísicos de tal manera que el contraste del objetivo de observación que va a ser visualizado a continuación se reduce si el número de respuestas continuas de la persona examinada que son correctas alcanza un primer valor predeterminado, y el contraste se aumenta si el número de respuestas continuas que son equivocadas alcanza un segundo valor predeterminado.
- 3El método de entrenamiento adaptativo de la percepción visual óptica del ojo humano de acuerdo con reivindicación 2, en donde la corrección de la persona examinada durante el proceso de medición completo se mantiene en un nivel hasta el ajuste y entonces se obtiene un umbral 5 de contraste del ojo humano de la persona examinada;y por ello se obtiene una sensibilidad de contraste del ojo humano invirtiendo el umbral de contraste del ojo humano.
- 4El método de entrenamiento adaptativo de la percepción visual óptica del ojo humano de acuerdo con reivindicación 3, en donde 1o el proceso de entrenamiento de la percepción visual comprende los pasos de:medir un umbral de contraste del ojo humano de la persona examinada respectivamente para las retículas de distintas frecuencias espaciales;seleccionar una frecuencia espacial que corresponde a un umbral de 15 contraste del ojo humano predeterminado en base a la diferencia de los umbrales de contraste bajo distintas frecuencias espaciales;y conducir el proceso de entrenamiento de la percepción visual usando la retícula con la frecuencia espacial seleccionada.
- 5El método de entrenamiento adaptativo de la percepción visual óptica 20 del ojo humano de acuerdo con reivindicación 3, en donde el proceso de entrenamiento de la percepción visual comprende los pasos de:seleccionar la frecuencia espacial medida después del proceso de entrenamiento de la percepción visual precedente;y 25 conducir el proceso de entrenamiento de la percepción visual usando la retícula con la frecuencia espacial seleccionada.
- 6Un aparato de entrenamiento adaptativo de la percepción visual óptica del ojo humano, que comprende:un subsistema de medición de la aberración de onda del ojo humano que 30 incluye una fuente de luz de referencia de infrarrojo cercano, un corrector de frente de onda y un sensor de frente de onda, para la medida de la aberración de onda del ojo humano de una persona que va a ser examinada;un subsistema de corrección de la aberración de onda del ojo humano que incluye una unidad de control y dicho corrector de frente de onda, para conducir y controlar el corrector de frente de onda para corregir la aberración de onda del ojo humano de la persona que va a ser examinada en base a la aberración de onda del ojo humano medida de la persona examinada;y un subsistema de entrenamiento de la percepción visual que incluye un circuito de procesamiento de vídeo, una pantalla de objetivo de observación y dicho corrector de frente de onda para la visualización en la pantalla de objetivo de observación los objetivos de observación de las distintas frecuencias espaciales y distintos contrastes después de que han sido sujetos a procesamiento en el circuito de procesamiento de vídeo, y que presentan los objetivos de observación a la persona examinada a través del corrector de frente de onda controlado y dirigido, para conducir un proceso de medición de la función visual del ojo humano y un proceso de entrenamiento de la percepción visual.
- 7El aparato de entrenamiento adaptativo de la percepción visual óptica del ojo humano de acuerdo con la reivindicación 6, en donde el corrector de frente de onda se selecciona de un grupo que consta de un espejo reflector deformable, un corrector de frente de onda de cristal líquido, un espejo deformable de membrana Micro mecanizada, un espejo deformable micro electromecánico, un espejo deformable Bimorfo y un espejo deformable líquido.
- 8El aparato de entrenamiento adaptativo de la percepción visual óptica del ojo humano de acuerdo con la reivindicación 6, en donde el sensor de frente de onda se selecciona de un grupo que consta de un sensor de frente de onda Hartmann basado en grupo de micro lentes, un sensor de frente de onda Hartmann basado en grupo de micro prismas, un sensor de frente de onda de Curvatura y un sensor de frente de Pirámide.
- 9El aparato de entrenamiento adaptativo de la percepción visual óptica del ojo humano de acuerdo con la reivindicación 6, en donde la pantalla objetivo de observación se selecciona de un grupo que consta de una pantalla de CRT, una pantalla comercial, una pantalla de cristal líquido, una pantalla de plasma, una pantalla electro luminiscente, y una pantalla luminiscente orgánica. 1O. El aparato de entrenamiento adaptativo de la percepción visual óptica 5 del ojo humano de acuerdo con la reivindicación 6, en donde el circuito de procesamiento de vídeo combina el canal R y el canal B de la salida normal de vídeo y obtiene una escala de grises de 14 bits o superior.
Independent claims9
143 paragraphs in 3 sections, as filed
<dl><dt>ADAPTIVE TRAINING METHOD OF THE </dt><dd /></dl>
<dl><dt>OPTICAL VISUAL PERCEPTION OF THE HUMAN EYE AND APPARATUS </dt><dd /></dl>
<dl><dt>OF THE SAME </dt><dd /></dl>
<dl><dt>BACKGROUND OF THE INVENTION </dt><dd /></dl>
<dl><dt>5 </dt><dd>FIELD OF THE INVENTION </dd></dl>
<dl><dt>The present invention relates to an adaptive training method </dt><dd /></dl>
<dl><dt>of the optical visual perception of the human eye and a training device </dt><dd /></dl>
<dl><dt>capable of several functions that include the correction of the aberration of the eye, the </dt><dd /></dl>
<dl><dt>visual function measurement (which includes but is not limited to a measurement of </dt><dd /></dl>
<dl><dt>1st </dt><dd>contrast threshold), the training of visual perception. Visual stimulus</dd></dl>
<dl><dt>finer is obtained by correcting the aberration of the human eye by means of a </dt><dd /></dl>
<dl><dt>adaptive optical system, and then the acuity limit of the </dt><dd /></dl>
<dl><dt>human eye, and you can efficiently improve the training effect of the </dt><dd /></dl>
<dl><dt>visual perception and visual function of the human eye performing the training </dt><dd /></dl>
<dl><dt>15 </dt><dd>of visual perception with such an apparatus. </dd></dl>
<dl><dt>DESCRIPTION OF THE PRIOR TECHNIQUE </dt><dd /></dl>
<dl><dt>The development of the vision of the human being is a progressive process. The</dt><dd /></dl>
<dl><dt>Eyeballs have grown to a certain extent when a person is born. No</dt><dd /></dl>
<dl><dt>However, growth is not complete in terms of anatomy or function </dt><dd /></dl>
<dl><dt>20 </dt><dd>physiological, and eyeballs will continue to grow in the long term from </dd></dl>
<dl><dt>then. The normal development of the Vision requires two conditions, one is the</dt><dd /></dl>
<dl><dt>postnatal development process, and the other is the external visual stimulus. The</dt><dd /></dl>
<dl><dt>ages 0-7 are the golden stage for vision development, during which if </dt><dd /></dl>
<dl><dt>the eyes are in shadow for a long period, the vision will not develop and </dt><dd /></dl>
<dl><dt>25 </dt><dd>will remain at a low level due to deficiency of visual stimuli </dd></dl>
<dl><dt>Normal external images. </dt><dd /></dl>
<dl><dt>The function of the eyeballs is dominant for the vision of a </dt><dd /></dl>
<dl><dt>person. Normally, an eyeball does not have the optical characteristic so</dt><dd /></dl>
<dl><dt>perfect and whose capacity is affected by several factors that include, by </dt><dd /></dl>
<dl><dt>30 </dt><dd>example, the diffraction of the pupil, the aberration of the cornea and the lens and the </dd></dl>
<dl><dt>dispersion of aqueous humor (R. Williams, D., & Hofer, H., Formation and </dt><dd /></dl>
<dl><dt>Acquisition of the Retinal Image. In: JSW Leo M. Chalupa (Ed.) The</dt><dd /></dl>
<dl><dt>Visual Neurosciences, MIT Publishing, Cambridge, Massachusetts, London, </dt><dd /></dl>
<dl><dt>England, 2003). </dt><dd /></dl>
<dl><dt>5 </dt><dd>Generally, the effect due to the dispersion of aqueous humor is so </dd></dl>
<dl><dt>Small that is insignificant. The aberration is large while the diffraction</dt><dd /></dl>
<dl><dt>it is small if the pupil becomes large, while the aberration is small </dt><dd /></dl>
<dl><dt>while the diffraction is large if the pupil becomes small. The</dt><dd /></dl>
<dl><dt>human eye aberration includes low order aberration and the </dt><dd /></dl>
<dl><dt>1st </dt><dd>High order aberration, the first one can be easily corrected but the last one </dd></dl>
<dl><dt>It is difficult to be corrected. </dt><dd /></dl>
<dl><dt>Recently, many researchers (Geun-Young Yoon and David R. </dt><dd /></dl>
<dl><dt>Williams, Visual Performance after correcting aberrations </dt><dd /></dl>
<dl><dt>monochromatic and chromatic of the eye, J. Opt.Soc.Am.ANol. 19, No. 2) try to</dt><dd /></dl>
<dl><dt>15 </dt><dd>apply adaptive optics technology in vision research to </dd></dl>
<dl><dt>explore the relationship between high order aberration and normal vision and </dt><dd /></dl>
<dl><dt>explore the limit of spatial vision. However, it is not agreed if you can</dt><dd /></dl>
<dl><dt>achieve superior vision after correcting all the </dt><dd /></dl>
<dl><dt>aberration (including low order and high order) of a visual system </dt><dd /></dl>
<dl><dt>20 </dt><dd>(Marcos, S., Sawides, L., Gambra, E., & Dorronsoro, C., Influence of </dd></dl>
<dl><dt>correction of the ocular aberration of adaptive optics in visual acuity </dt><dd /></dl>
<dl><dt>at different luminances and contrast polarities. 8: 1-12, 2008).</dt><dd /></dl>
<dl><dt>A visual system can only be developed correctly with the </dt><dd /></dl>
<dl><dt>visual experiences help (Chiu, C., & Weliky, M., The Role of Activity </dt><dd /></dl>
<dl><dt>25 </dt><dd>Neuronal in the Development of Orientation Selectivity. In: JSW Leo M.</dd></dl>
<dl><dt>Chalupa (Ed.) The Visual Neurosciences, MIT Editorial, Cambrighe, </dt><dd /></dl>
<dl><dt>Massachusetts, London, England, 2003). The development of a fine acuity</dt><dd /></dl>
<dl><dt>you need the fine development of the visual nervous system that depends on the degree of </dt><dd /></dl>
<dl><dt>image clarity in the retina for the optical system of an eyeball. A</dt><dd /></dl>
<dl><dt>30 </dt><dd> image cannot be clearly generated in the retina due to dispersion and </dd></dl>
high order aberration. The spatial cutoff frequency that can be differentiated by the visual nervous system will not be larger than the higher spatial frequency of the image generated in the retina by the eyeballs.
The learning process of visual perception shows that the ability to identify the nervous system for a certain image will be greatly improved through learning, which indicates that the nervous system is trainable even for an adult. Many psychological tests reveal that an adult can increase his speed and success rate for a lot of visual perception tasks through learning (Zhou YF, Huang CB, Xu PJ, Tao LM, Qiu ZP, Li XR and Lu ZL, Learning Perceptual Improves Contrast Sensitivity and Visual Acuity in Adults with Anisometropic Amblyopia Vision Research, 46 (5): 739-750, 2006). However, the learning process of the previous visual perception uses the lens to correct low-order aberration, and an image cannot be clearly generated in the retina due to the still existing high-order aberration and dispersion. Therefore, the learning process of simple visual perception improves visual function to an extent limited by the clarity of the image.
In view of the fact that the visual nervous system is trainable, the present invention combines the technique of adaptive correction of optical aberration and the technique of learning visual perception. The image quality generated in the retina can be improved long after the aberration is corrected through the adaptive optical technique. If the learning process of visual perception is conducted with such fine visual stimulation, the acuity of the visual nervous system can be improved, and therefore the effect of training visual perception and visual function of human eyes can be efficiently improved. .
SUMMARY OF THE INVENTION
In view of the above disadvantages in the prior art, the present invention proposes an adaptive training method of the optical visual perception of the human eye and an apparatus capable of several functions that include the correction of the EYE aberration, the measurement of the function visual (which includes but is not limited to a measurement of the contrast threshold), the training of visual perception. The finest visual stimulus is obtained by correcting the aberration of the eye by means of an adaptive optical system, and then the eye acuity limit can be measured, and the training effect of visual perception and visual function can be efficiently improved of human eyes performing visual perception training with such an apparatus.
In accordance with the first aspect of the present invention, an adaptive training method of the optical visual perception of the human eye is proposed, comprising the step of: a step of measuring the wave aberration of the human eye to measure the aberration of human eye wave of a person to be examined using a near-infrared reference light source, a wavefront corrector and a wavefront sensor; a step of correcting the wave aberration of the human eye to drive and control the wavefront corrector to correct the wave aberration of the human eye of the person to be examined based on the wave aberration of the human eye measured of the person examined; and a training step of the visual perception to visualize on an objective observation screen the observation objectives of the different spatial frequencies and the different contrasts after they have been subjected to processing in a video processing circuit, and which present the Observation objectives for the person examined through the controlled and directed wavefront corrector, to conduct a process of measuring the visual function of the human eye and a process of training visual perception.
Preferably, the process of measuring the visual function of the human eye lies in a measurement of the contrast threshold of the human eye, where the difficulty of the stimulus is adjusted in real time in response to the response of the person examined according to the method of adjustment of psychophysicists. The contrast of the observation objective to be displayed below is reduced if the number of continuous responses of the examined person that are correct reaches a first determined value, and the contrast is increased if the number of continuous responses that are incorrect reaches a Second default value. The correction of the person examined during the entire measurement process is maintained at a finished level and then a contrast threshold of the human eye of the person examined is obtained. A contrast sensitivity of the human eye is obtained by inverting the contrast threshold of the human eye. More preferably, the visual perception training process comprises the steps of: measuring a contrast threshold of the human eye of the person examined respectively for the lattices of the different spatial frequencies; select a spatial frequency that corresponds to a predetermined contrast threshold of the human eye based on the difference in contrast thresholds under different spatial frequencies; and conduct the visual perception training process using the reticle with the selected spatial frequency.
Alternatively, the visual perception training process comprises the steps of: selecting the measured spatial frequency after the training process of the preceding visual perception; and conduct the visual perception training process using the reticle with the selected spatial frequency.
In accordance with the second aspect of the present invention, an adaptive training apparatus for the optical visual perception of the human eye is proposed, comprising: a subsystem for measuring the wave aberration of the human eye that includes a reference light source near-infrared, a wavefront corrector and a wavefront sensor, for measuring the wave aberration of the human eye of a person to be examined; a human eye wave aberration correction subsystem that includes a control unit and said wavefront corrector, to drive and control the wavefront corrector to correct the wave aberration of the human eye of the person going to be examined based on the
<dl><dt>wave aberration of the human eye measured by the person examined; and a</dt><dd /></dl>
<dl><dt>training subsystem of visual perception that includes a circuit of </dt><dd /></dl>
<dl><dt>video processing, an objective observation screen and said corrector </dt><dd /></dl>
<dl><dt>wavefront, for viewing on the target observation screen of </dt><dd /></dl>
<dl><dt>5 </dt><dd>the observation objectives of different spatial and different frequencies </dd></dl>
<dl><dt>contrasts after they have been subject to processing in the circuit </dt><dd /></dl>
<dl><dt>video processing, and present the observation objectives to the person </dt><dd /></dl>
<dl><dt>examined through the controlled and driven wavefront corrector, to </dt><dd /></dl>
<dl><dt>conduct a process of measuring the visual function of the human eye and a </dt><dd /></dl>
<dl><dt>1st </dt><dd>training process of visual perception. </dd></dl>
<dl><dt>Preferably, the wavefront corrector is selected from a group </dt><dd /></dl>
<dl><dt>consisting of a deformable reflector mirror, a wavefront corrector of </dt><dd /></dl>
<dl><dt>liquid crystal, a deformable mirror of micro mechanized membrane, a mirror </dt><dd /></dl>
<dl><dt>deformable micro electromechanical, a deformable mirror Bimorfo, and a mirror </dt><dd /></dl>
<dl><dt>15 </dt><dd>deformable liquid. </dd></dl>
<dl><dt>Preferably, the wavefront sensor is selected from a group that </dt><dd /></dl>
<dl><dt>It consists of a Hartmann wavefront sensor based on a group of micro lenses, </dt><dd /></dl>
<dl><dt>a Hartmann wavefront sensor based on a group of micro prisms, a </dt><dd /></dl>
<dl><dt>Curvature wavefront sensor and a Pyramid wavefront sensor. </dt><dd /></dl>
<dl><dt>20 </dt><dd>Preferably, the target observation screen is selected from </dd></dl>
<dl><dt>of a group consisting of a CRT screen, a commercial screen, a </dt><dd /></dl>
<dl><dt>liquid crystal display, a plasma screen, an electro screen </dt><dd /></dl>
<dl><dt>luminescent, and an organic luminescent screen. Preferably, the circuit</dt><dd /></dl>
<dl><dt>video processing combines the R channel and the B channel of the normal output of </dt><dd /></dl>
<dl><dt>25 </dt><dd>video and get a gray scale of 14 bits or higher. </dd></dl>
<dl><dt>Compared to the prior art, the present invention proposes the </dt><dd /></dl>
<dl><dt>concept of applying adaptive optical technology in the process of </dt><dd /></dl>
<dl><dt>visual perception training for the first time. The device according to</dt><dd /></dl>
<dl><dt>The present invention is capable of several functions that include the correction of </dt><dd /></dl>
<dl><dt>30 </dt><dd> the aberration of the eye, the measurement of visual function (which includes but is not </dd></dl>
limited to a measurement of the contrast threshold), the training of visual perception. Compared to the training process of the previous visual perception, the apparatus can obtain the fine visual stimulus by correcting the aberration of the eye by means of an adaptive optical system, and then the eye acuity limit can be measured, and therefore It can efficiently improve the effect of visual perception training and the measurement of the visual function of human eyes by performing visual perception training with such an apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other objects, features and advantages of the present invention will be clearer from the following detailed description of the non-limited embodiments of the present invention taken in conjunction with the accompanying drawings in which:
Fig. 1 is a schematic block diagram for showing the respective units operating in the present invention; Fig. 2 is a schematic diagram to show the visual perception training process of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Later, the present invention will be described in accordance with the drawings. In the following description, some particular embodiments are used for the purpose of description only, which will not be construed as any limitation of the present invention but examples thereof. Although it may cloud the compression of the present invention, the conventional construction or structure will be omitted.
Fig. 1 is a schematic block diagram for showing the respective units operating in the present invention.
As shown in Fig. 1, an adaptive optical perception training apparatus according to the present invention comprises a near-infrared reference light source 1, a collimation lens 2, a first reflector 3, a first beam splitter 4, a system aforementioned beam matching 6, a wavefront corrector 7, an aforementioned beam matching system 8, a second reflector 9, a second beam splitter 10, a wavefront sensor 11, a computer 12, a high voltage amplifier 13, a third reflector 14, an optical imaging system 15, an objective observation screen 16 and a video processing circuit 17. The human eye is indicated by the reference sign 5.
The adaptive training method of the optical visual perception of the human eye according to the present invention comprises the following three stages: a stage of measuring the wave aberration of the human eye, a stage of correction of the wave aberration of the human eye and a training stage of visual perception.
In the measurement stage of the human eye wave aberration, the near-infrared reference light source 1 emits lights, which are collided by collimator 2 and are reflected by the first reflector 3 and the first beam splitter 4, and finally they enter the pupil of the human eye 5. The lights are reflected from the back of the eye, travel through the aforementioned system of beam matching 6 after reflection in the first beam splitter 4 and reach the wavefront corrector 7, which reflects the lights to the afocal system of beam matching 8. The lights reach the wavefront sensor 11 after they are reflected from the second reflector 9 and the second beam splitter 1 O. The wavefront sensor 11 transmits the measured error signal to the computer 12 to obtain the wave aberration of the human eye.
Then, in the step of correcting the wave aberration of the human EYE, the computer 12 obtains the control voltage for the wavefront corrector 7 by executing a computer control application based on the wave aberration of the human eye obtained. The control voltage is amplified by the high voltage amplifier 13 and applied to the wavefront corrector 7 to drive it, and thereby correct the wave aberration of the human eye.
<dl><dt>The training stage of visual perception begins after </dt><dd /></dl>
<dl><dt>Wave aberration correction stage of the human eye. A measurement of the</dt><dd /></dl>
<dl><dt>visual function and the application of vision training executed in the </dt><dd /></dl>
<dl><dt>computer 12 generate the observation targets of different frequencies </dt><dd /></dl>
<dl><dt>5 </dt><dd>Spatial and different contrasts. The observation objectives generated are</dd></dl>
<dl><dt>they display on the objective observation screen 16 after they are subject to </dt><dd /></dl>
<dl><dt>processing in the video processing circuit 17. The person under </dt><dd /></dl>
<dl><dt>exam sees the observation objectives displayed on the objective screen of </dt><dd /></dl>
<dl><dt>observation 16 through the first beam splitter 4, the afocal system of </dt><dd /></dl>
<dl><dt>1st </dt><dd>beam matching 6, the wavefront corrector 7, the afocal system of </dd></dl>
<dl><dt>beam matching 8, the second reflector 9, the second beam splitter 10, the </dt><dd /></dl>
<dl><dt>third reflector 14 and imaging lenses 15. The training process of the </dt><dd /></dl>
<dl><dt>visual perception and the process of measuring the visual function of the human eye </dt><dd /></dl>
<dl><dt>(which includes but is not limited to measuring the contrast threshold) begins. </dt><dd /></dl>
<dl><dt>15 </dt><dd>The wavefront corrector 7 can be selected from a group </dd></dl>
<dl><dt>consisting of a deformable reflector mirror, a wavefront corrector of </dt><dd /></dl>
<dl><dt>liquid crystal, a deformable mirror of micro mechanized membrane, a mirror </dt><dd /></dl>
<dl><dt>deformable micro electromechanical (MEMS), a deformable mirror Biomorph and </dt><dd /></dl>
<dl><dt>a liquid deformable mirror. </dt><dd /></dl>
<dl><dt>20 </dt><dd>Wavefront sensor 11 can be selected from a group that </dd></dl>
<dl><dt>It consists of a Hartmann wavefront sensor based on a group of micro lenses, </dt><dd /></dl>
<dl><dt>a Hartmann wavefront sensor based on a group of micro prisms (see the </dt><dd /></dl>
<dl><dt>Chinese Invention Patent No. ZL03126431.X), a wavefront sensor of </dt><dd /></dl>
<dl><dt>Curvature and a Pyramid wavefront sensor. The target screen of</dt><dd /></dl>
<dl><dt>25 </dt><dd>observation 16 can be selected from a group consisting of a screen of </dd></dl>
<dl><dt>CRT, a commercial display, a liquid crystal display, a display of </dt><dd /></dl>
<dl><dt>plasma, an electroluminescent screen, an organic luminescent screen. </dt><dd /></dl>
<dl><dt>The video processing circuit 17 can combine the R channel and the </dt><dd /></dl>
<dl><dt>B channel of normal video output and get a 14-bit gray scale </dt><dd /></dl>
<dl><dt>30 </dt><dd> (corresponding to 16,384 levels) or higher, to meet the requirements </dd></dl>
of the process of measuring the visual function of the human eye and the process of training visual perception. For example, the video processing circuit 17 may take the form of a circuit as disclosed in Chinese Utility Patent No. ZL02220968.9.
Fig. 2 is a schematic diagram to show the process of training the visual perception of the present invention.
As shown in Fig. 2, during each training process, a cross-link appears twice sequentially on the screen, in company with an audio indication. Following each occurrence of cross-linking, a blank space (a gray screen), or a target (that is, a sine grid subject to smooth limit processing) could be detected. The person to be examined is required to press the left key to make a response when the reticle appears after the cross-linking occurs for the first time. The person is required to process the right key to make a response when the reticle appears after cross-linking occurs a second time. The process is repeated until all training tasks are completed, that is, the tasks for the full day.
In the present invention, the process of measuring the visual function of the human eye consists of a measurement of the contrast threshold of the human eye, where the difficulty of the stimulus is adjusted in real time in response to the response of the person examined according to The method of adjustment of psychophysicists. The contrast of the observation objective to be visualized below is reduced, that is, the difficulty is improved, if the examined person responds correctly continuously three times. If the person examined wrongly responds, the contrast of the observation objective to be visualized below is increased, to reduce the difficulty. By such adjustment, the correction of the person examined during the entire measurement process remains almost unchanged. In the end, the contrast will converge with the contrast threshold of the human eye for the person examined. The contrast sensitivity of the human eye is obtained by inverting the contrast threshold of the human eye.
The visual perception training process can adopt the conventional method quot; examination ~ training ~ re-examquot ;, where the contrast sensitivity curves of the human eye go down before and after the visual perception training process are measured under eight spatial frequencies (which include 0.6, 1, 2, 4, 8, 16, 24 and 32 cycles per degree) and the lattices of the different spatial frequencies appear randomly. After measurement, the contrasts of the eight spatial frequencies converge with the contrast thresholds of the human eye of the person under examination. An appropriate spatial frequency (that is, the cutoff frequency) is selected for training based on the difference in contrast thresholds of the human eye under different spatial frequencies. For example, the spatial frequency corresponding to a contrast threshold of the human eye of 0.4 of a person is deduced according to a curve of known contrast sensitivity. The visual perception training process requires the examined person to conduct the training tasks for a predetermined amount at the same time of each day under the selected spatial frequency. The training can adopt an adjustment method similar to the measurement of the contrast threshold, and automatically takes the contrast threshold finally obtained after the previous day's training as the initial value for the next day, while the frequency of the reticle is maintained without changes.
The above-mentioned description gives only the preferred embodiments of the present invention and does not attempt to limit the present invention in any way. Thus, any modification, substitution, improvement or the like made within the spirit and principle of the present invention should be encompassed by the scope of the present invention.
Contents3
2 sheets
Sheet 1 Sheet 2
10 members in 5 offices
Priority claims6
| Document | Office | Kind | Date |
|---|---|---|---|
| 200910262470 | China | A | |
| 200910262470 | China | A | |
| 2009102624704 | China | – | |
| 2009102624704 | – | – | – |
| CN200910262470 | – | – | – |
| CN20091262470 | – | – | – |
Members10
| Document | Office | Kind | |
|---|---|---|---|
| CN101947157A | China | A | |
| US2011149238A1 | United States of America | A1 | |
| FR2954082A1 | France | A1 | |
| JP2011125681A | Japan | A | |
| US8020992B2 | United States of America | B2 | |
| CN101947157B | China | B | |
| FR2954082B1 | France | B1 | |
| ES2396768A1 | Spain | A1 | |
| JP5248563B2 | Japan | B2 | |
| ES2396768B2This record | Spain | B2 |
2 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Announcement of lapse in spainLapsedFD2A | FD2A | |
| Definitive protectionFG2A | FG2A |
Numbers
- Publication
- 2396768
- Publication, DOCDB
- 2396768
- Publication, EPODOC
- ES2396768
- Application
- 31356
- Application, DOCDB
- 201031356
- Application, EPODOC
- ES20100031356
Titles2
- Spanish
- METODO DE ENTRENAMIENTO ADAPTATIVO DE LA PERCEPCION VISUAL OPTICA DEL OJO HUMANO Y APARATO DEL MISMO.
- English
- ADAPTIVE TRAINING METHOD OF THE OPTICAL VISUAL PERCEPTION OF THE HUMAN EYE AND EQUIPMENT OF THE SAME.
Classification
- CPC, 5
- A61H5/00
- A61B3/14
- A61B3/028
- A61B3/08
- A61B3/1015
- IPC, 3
- A61B3 028
- A61B3 08
- A61H5 00