CN112754419A

CN112754419A - Visual perception learning training instrument and visual perception learning training system

Info

Publication number: CN112754419A
Application number: CN202110021286.1A
Authority: CN
Inventors: 王清扬
Original assignee: Ruier Mingkang Hangzhou Optometry Technology Co ltd
Current assignee: REYEMICO (HANGZHOU) MEDICAL TECHNOLOGY, Inc.
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-05-07

Abstract

The invention discloses a visual perception learning training instrument, which comprises: the human eye refraction measurement subsystem is used for measuring to obtain ametropia information; the human eye refraction compensation subsystem corrects the human eye defocusing and astigmatism according to the ametropia information obtained by measurement; and a visual perception learning training subsystem which provides a visual perception learning training task for the human subject based on the measurement information of the human eye refraction measurement subsystem and on the adjustment operation of the human eye refraction compensation subsystem. The invention also discloses a visual perception learning training system which comprises a beacon light source, a collimating lens, a beacon diaphragm, a beacon light imaging lens, a first spectroscope, a second spectroscope, a cylindrical lens group, an internal focusing device, an imaging camera, a camera imaging lens, a visual target display device, a visual target display imaging lens and a reflector. The invention effectively improves the visual perception learning and training effect and has higher cost performance.

Description

Visual perception learning training instrument and visual perception learning training system

Technical Field

The present disclosure relates to optical vision, and more particularly, to a visual perception learning training apparatus and a visual perception learning training system for providing visual perception learning training for human eyes.

Background

Vision is an active process, which captures optical information through a dioptric system and then processes the information through a nervous system, so as to generate subjective vision, the visual system is actually a combination of eye imaging and brain nerve processing, and the development of visual functions requires the participation of visual experience. The human eye nervous system has strong learning ability, plasticity in each age group, and capability of identifying specific images can be greatly improved after repeated mass learning. Similar to the visual development process, remodeling of the visual system also requires the participation of visual experience, and the remodeling effect depends on the fineness of the imaging of the stimulus target on the retina through the eyeball optical system and the method of visual perception learning training.

The eyeball optical system is affected by various optical aberrations including low-order aberrations and high-order aberrations in addition to scattering and diffraction. The low order aberrations are primarily defocus and astigmatism, which are known as refractive errors in visual optics. Higher order aberrations are aberrations other than sphere myopia (simple defocus) and cylinder myopia (astigmatism), which have subtle but still noticeable effects on vision. Higher order aberrations are only detectable by the wavefront aberrometer.

The lower order aberrations and the higher order aberrations collectively affect how sharp the external object is imaged on the retina. The low order aberrations are the most prominent factors in myopia, hyperopia and astigmatism, i.e. the development of refractive errors. Lower order aberrations generally have a much more severe impact on the visual system than higher order aberrations. Still other types of disorders can also impair vision, such as amblyopia, cataracts, retinopathy and glaucoma. Once other types of disorders are eliminated, those patients whose vision is less than optimal even after corrective prescription, may be affected by higher order aberrations.

However, in everyday life, the main and common cause of vision loss is "low-order aberrations", i.e. ametropia, in other words, most of the visually impaired population with the need to correct vision is often accompanied by ametropia, which needs to be corrected first when performing visual perception learning exercises.

In order to correct ametropia, it is known practice in the art to correct ametropia of the eye, typically by wearing spectacles, i.e. conventionally worn spectacle lenses or contact lenses. Three main problems of the glasses for correcting the ametropia of the human eye exist: 1) the clinical glasses degree takes 25 degrees as a step, only the combination close to the diopter of human eyes can be selected when glasses are matched, and the defocusing and astigmatic aberration of the human eyes cannot be completely compensated; 2) the dynamic change of the diopter is caused by the adjusting function of human eyes, especially under the environment of extreme eyes, so the ametropia cannot be well compensated by the glasses with fixed diopter; 3) the residual higher order aberrations affect the quality of the retinal image imaged by the external stimulus. Therefore, when performing visual perception learning training by compensating ametropia of a human eye with glasses, stimulating image objects cannot generate clear images on retinas, and the visual perception learning has limited improvement range of the visual function of the human eye due to the limitation of the image clarity.

The invention patent publication No. CN101947157B proposes an instrument and a method for combining the adaptive optical aberration correction technology with visual perception learning training, and corrects all dynamic aberrations of human eyes in real time through the adaptive optical technology to obtain fine retina stimulation close to the diffraction limit. This approach is optimal from the technical point of view, but since the adaptive optics technology requires the use of special devices such as wavefront sensors, wavefront correctors, corrective controllers, etc., and particularly the wavefront correctors are used in combination with the corrective controllers, the complex variable optical surfaces and the precise mechanical control are adopted, and high-voltage amplification units are often included, so that the equipment is expensive. On the other hand, the instrument is bulky due to the matching of the human eye with the wavefront correction device. These factors are not favorable for clinical application and wide popularization of the patent technical scheme. The contents of the cited publications are all incorporated by reference into the present disclosure. However, myopia in teenagers in China is the most common cause of high-incidence hypopsia for many years, and the above cited patents and similar technical schemes are difficult to meet the common demand.

Thus, there is a need in the art for more alternative solutions.

Disclosure of Invention

[ problem to be solved ]

As described above, the inventors have paid attention to how to economically and effectively solve the problem of visual deterioration caused by ubiquitous refractive error, for example, the problem of myopia prevalent in teenagers in our country. The inventor hopes to effectively improve the vision of the patient, particularly effectively solve the problem of high myopia of teenagers in our country by providing a visual perception learning and training instrument which is low in cost, convenient to use, easy to provide to, for example, a kindergarten, a school or a family, and more flexible to provide the patient with treatment in the places.

In view of the above, the present invention is directed to a visual perception learning and training instrument based on a refraction compensation function, and further, to a visual perception learning and training instrument with a precise refraction compensation function, which performs visual perception learning and training on the basis of precisely compensating human eye ametropia to improve human eye visual function.

[ solution ]

To solve the above problems and achieve the object of the present disclosure, the present disclosure provides the following technical solutions.

A first aspect of the present disclosure provides a visual perception learning training apparatus, including: the human eye refractive measurement subsystem is used for measuring and obtaining ametropia information of the testee; a human eye refraction compensation subsystem for correcting the human eye defocusing and astigmatism of the human subject according to the measured ametropia information; and a visual perception learning training subsystem which provides a visual perception learning training task for the human subject based on the measurement information of the human eye refraction measurement subsystem and based on the adjustment operation of the human eye refraction compensation subsystem.

According to the first aspect of the present disclosure, further, the human eye refraction compensation subsystem corrects the human eye defocus and astigmatism of the human eye of the human subject by controlling the inner focusing device and the cylindrical lens group.

According to the first aspect of the present disclosure, further, the visual perception learning and training subsystem generates graphs with different spatial frequencies and/or different contrasts on the visual target display device, and displays the graphs to the human subject after passing through the refraction compensation subsystem, so as to perform human eye visual function measurement and visual perception learning and training tasks.

In a second aspect of the present disclosure, a visual perception learning training system is provided, which includes a beacon light source, a collimating lens, a beacon diaphragm, a beacon light imaging lens, a first beam splitter, a second beam splitter, a cylindrical lens group, an internal focusing device, an imaging camera, a camera imaging lens, a visual target display device, a visual target display imaging lens, and a reflector.

Further, according to a second aspect of the present disclosure, when the visual perception learning training system provided by the present disclosure works, the beacon light source is turned on first, the beacon light is collimated into parallel light by the collimating lens, the parallel light passes through the beacon diaphragm to form an annular target, and then the parallel light passes through the beacon light imaging lens, the first beam splitter, the second beam splitter, the cylindrical lens group and the inner focusing device in sequence and is emitted into human eyes in parallel.

Further, the visual perception learning and training system provided by the present disclosure, wherein when the system is in operation, if the eye to be measured is an emmetropic eye, the annular target is imaged on the retina Er, the light reflected from the fundus passes through the pupil and then passes through the second spectroscope, and a clear standard annular image is formed on the imaging camera by the imaging lens.

Further, in the above visual perception learning and training system, when the system is in operation, if the human eye has ametropia, the size and shape of the annular image formed on the imaging camera are changed, the defocus value and the astigmatism value of ametropia are calculated and obtained through comparison with the standard annular image, and the internal focusing device is controlled to generate displacement and/or the cylindrical lens group is controlled to rotate relatively to compensate the ametropia of the human eye.

Further, in the visual perception learning and training system, when the system works, a visual target image with high resolution can be generated on the visual target display device and enters human eyes after passing through the imaging lens, the reflecting mirror, the first spectroscope, the second spectroscope, the cylindrical lens group and the internal focusing device, the cylindrical lens group and/or the internal focusing device compensate ametropia of objective optometry, the image on the visual target display device is clearly imaged on retina (Er), and visual function testing and visual perception learning and training tasks are completed by controlling the visual target display device.

The present disclosure is based on the following ideas: with a view to providing a precise refractive compensation function, a visual perception learning trainer that addresses the precise refractive compensation function in a centralized manner is provided. In particular, the present disclosure provides a refractive compensation subsystem in which, in a preferred form, rotation of the bi-cylindrical lens can combine continuously variable astigmatism values, and the focusing apparatus can achieve continuous diopter changes for correcting various combinations of defocus and astigmatism values within the design range, respectively.

[ advantageous effects of the invention ]

The present disclosure provides targeted treatment for patients with widespread refractive errors, thereby compromising the contradiction between human eye aberration correction power and device cost, correcting the overall refractive error of the human eye in real time. The present disclosure achieves fine retinal stimulation over eyeglasses, improving visual perception learning training effects.

Because people with abnormal visual function are accompanied by ametropia, the people who do not have the abnormal visual function need to be subjected to visual perception learning training for performing ametropia correction. Typically, refractive correction is performed by wearing frame glasses or contact lenses. Because the glasses are not completely corrected for refractive errors and there is residual refractive error, imaging of the training target on the retina is imperfect. After correcting refractive errors in the manner of the present disclosure, however, there is no residual refractive error, and thus imaging of the training target on the retina is superior to the former.

Further, other aspects of the present disclosure also have the following advantages:

(1) the method adopts the inner focusing device and the cylindrical lens group to correct the ametropia of the human eyes, can completely compensate the measured defocusing and astigmatic aberration of the human eyes, and makes corresponding changes along with the changes of the ametropia of the human eyes.

(2) The optometry and compensation adopted by the system can be automatically completed by a computer, the influence of a manual trial lens on the tolerance of a tested lens can be overcome, and the training preparation time can be saved.

(3) The visual perception learning training adopted by the method is carried out after the ametropia is completely compensated, so that fine retina stimulation superior to glasses can be obtained, and the learning training effect is improved.

(4) The ametropia compensation device adopted by the method is simple in structure, easy to realize, high in cost performance and more convenient to popularize clinically compared with a self-adaptive optical technology.

Drawings

The objects, implementation steps and features of the components of the present disclosure will be more readily understood by those skilled in the art after reading the various embodiments of the present disclosure with reference to the accompanying drawings, which illustrate the following:

FIG. 1 is a schematic illustration of the practice of example 1 of the present disclosure;

FIG. 2 is a schematic illustration of the practice of example 2 of the present disclosure;

FIG. 3 is a schematic block diagram of a preferred embodiment of the present disclosure employing computer control; and

fig. 4 is a chart providing a record of the training results of a group of subjects.

Detailed Description

In order to clearly illustrate the implementation of the present disclosure in detail, some embodiments of the present disclosure are given below. In the following detailed description of the preferred embodiments of the present disclosure, reference is made to the accompanying drawings, in which details and functions that are not necessary for the disclosure are omitted so as not to obscure the understanding of the present disclosure.

Example 1

Referring to fig. 1, there is provided a visual perception learning training machine having a precise refraction compensation function according to embodiment 1 of the present disclosure, the training machine including: the device comprises a beacon light source 101, a collimating lens 102, a beacon diaphragm 103, a beacon light imaging lens 109, a first beam splitter 104, a second beam splitter 105, a cylindrical lens group 106, an inner focusing device 107, an imaging camera 201, a camera imaging lens 202, a sighting mark display device 301, a sighting mark display imaging lens 302 and a reflecting mirror 303. Also shown in fig. 1 is the human eye 108 of the subject and the retina Er.

The working process of the visual perception learning training instrument according to the embodiment 1 of the disclosure comprises three stages: (1) measurement of human eye refractive error, (2) compensation of human eye refractive error, and (3) visual perception learning training.

In the stage of measuring the ametropia of human eyes, firstly, the beacon light source 101 is turned on, the beacon light is collimated into parallel light through the collimating lens 102, the parallel light passes through the beacon diaphragm 103 to form an annular target, and then the annular target is imaged on the retina Er of the human eyes 108 after passing through the beacon light imaging lens 109, the first spectroscope 104, the second spectroscope 105, the cylindrical lens group 106 and the inner focusing device 107 in sequence.

If the eye 108 to be measured is an emmetropia eye, an annular object is imaged on the retina Er, and after light reflected from the fundus passes through the pupil, a clear standard annular image is formed on the imaging camera 201 by the camera imaging lens 202 through the internal focusing device 107, the cylindrical lens group 106 and the second beam splitter 105. If there is ametropia in the human eye 108, the size and shape of the ring image formed on the imaging camera 201 are changed, and the defocus value and the astigmatism value of ametropia are calculated by comparing with the standard ring image.

In the preferred embodiment of the present disclosure, a computer is used to calculate and control the refractive error compensation operation. Referring to fig. 3, in the ametropia compensation stage of the human eye 108, the computer controls the translation device 107 on the inner focusing device to move and compensate the defocusing aberration of the human eye according to the ametropia measurement result, and controls the rotation devices of the two cylindrical lenses in the cylindrical lens group 106 to rotate corresponding angles respectively to compensate the defocusing aberration of the human eye. As shown in fig. 1, the whole of the dashed frame portion (component assembly) moves in the X-axis direction at this time. In this way, the moving part of the components in the dashed line frame is more, and the weight is larger, so the bearing capacity and the precision of the translation guide rail need to be considered when the translation guide rail is selected.

The measurement and compensation of the refractive error of the human eye can be carried out repeatedly, and the measurement of the refractive error value is finished iteratively when the refractive error value is lower than a set value. The procedure for measuring and correcting refractive error is shown in figure 3.

After the ametropia compensation phase is completed, a visual perception learning training phase is entered. An image with variable contrast and spatial frequency can be generated on the sighting target display device 301, and enters the human eye 108 through the sighting target display imaging lens 302, the reflecting mirror 303, the first spectroscope 104, the second spectroscope 105, the cylindrical lens group 106 and the inner focusing device 107. Because the cylindrical lens group 106 and the inner focusing device 107 accurately compensate the ametropia of human eyes, the image on the sighting target display device 301 is clearly imaged on the retina Er, and the stimulating pattern on the sighting target display device is controlled by a psychophysics method to complete the visual function test and the visual perception learning and training task. The visual acuity of the test subjects before and after training was tested to evaluate the training effect. Fig. 4 shows the change of acuity which resulted from the 30-day training of five subjects.

With respect to psychophysical methods, for example, in the present disclosure, the visual function test may be a contrast sensitivity test obtained by measuring a contrast threshold at a selected spatial frequency and then taking the reciprocal. The contrast threshold can be measured by a "three-in one-out" adjustment method in psychophysical methods. The subject can continuously respond for three times and reduce the visual target contrast ratio displayed subsequently by 10 percent when the answer is correct; and when the subject answers incorrectly, the visual target contrast ratio displayed subsequently is raised by 10%. After many search iterations, the final convergence value is the contrast threshold of the subject.

In the present disclosure, visual perception training may employ the following modes. And selecting the corresponding spatial frequency as the training frequency to perform visual training when the contrast threshold is 0.5 according to the contrast sensitivity curve measured by the testee. The training method may employ a method of enforcing the trial to determine whether there is a non-raster pattern in the target window. The spatial frequency of the training is kept constant during a training period. After one training period is finished, training can be continued under different spatial frequencies according to the contrast sensitivity measurement result.

Example 2

Most operations or processes similar to those of the embodiment in embodiment 2 are omitted from the description. Components of similar or identical function are provided with the same reference numerals.

As shown in fig. 2, the visual perception learning training instrument according to the present disclosure, which has a precise refraction compensation function, includes a beacon light source 101, a collimating lens 102, a beacon diaphragm 103, a beacon light imaging lens 109, a first beam splitter 104, a second beam splitter 105, a cylindrical lens group 106, an inner focusing device 107, an imaging camera 201, a camera imaging lens 202, a target display device 301, an imaging lens 302, and a reflecting mirror 303. Also shown in fig. 2 is the human eye 108 of the subject and the retina Er.

The working process of the visual perception learning training instrument of the embodiment 2 comprises three stages: measurement of human eye ametropia, compensation of human eye ametropia and visual perception learning training.

If the eye 108 to be measured is an emmetropia eye, an annular object is imaged on the retina Er, and light reflected from the fundus passes through the pupil, then passes through the inner focusing device 107, the cylindrical lens group 106 and the second beam splitter 105, and forms a clear standard annular image on the imaging camera 201 by the camera imaging lens 202. If there is ametropia in the human eye, the size and shape of the ring image formed on the imaging camera 201 are changed, and the defocus value and the astigmatism value of ametropia are calculated by comparing with the standard ring image.

In the stage of compensating the ametropia of the human eye, the computer controls the translation device 107 on the inner focusing device to move and compensate the defocusing aberration of the human eye according to the ametropia measurement result, and controls the rotating devices of the two cylindrical lenses in the cylindrical lens group 106 to rotate by corresponding angles respectively to compensate the defocusing aberration of the human eye. As shown in fig. 2, the broken-line frame part moves in the Y-axis direction as a whole. In the mode, only two reflectors are arranged in the moving part of components in the dotted line frame, so that the device is light and convenient, but the focusing range of the inner focusing device is lost.

The measurement and compensation of the refractive error of the human eye can be carried out repeatedly, and the measurement of the refractive error value is finished iteratively when the refractive error value is lower than a set value. After the ametropia compensation phase is completed, a visual perception learning training phase is entered. The sighting target display device 301 can generate a high-resolution sighting target image, the sighting target image enters human eyes after passing through the sighting target display imaging lens 302, the reflecting mirror 303, the first spectroscope 104, the second spectroscope 105, the cylindrical lens group 106 and the inner focusing device 107 compensate ametropia of objective optometry at the moment, the image on the sighting target display device 301 is clearly imaged on a retina Er, and visual function testing and visual perception learning training tasks are completed by controlling the sighting target display device.

Examples of variations and variations

The above embodiments give preferred solutions. Other alternatives will be readily apparent to those skilled in the art. For example, the optical paths may be provided separately for each subsystem, or partially separately, and although more components are used, they are easy to implement to achieve similar effects.

The human eye refraction measurement subsystem includes an infrared light source, a collimating lens 102, a beacon light stop 103, and a beacon light imaging lens 109. An infrared light source is used as the beacon light source 101, the infrared light source can be selected from an infrared light emitting tube, an infrared laser diode and a super-radiation infrared light emitting diode, the wavelength band of the light source is preferably 750nm-1000nm, and both human eye sensitivity and camera response are considered.

The human eye refractive compensation subsystem includes a refractive compensation module and a control mechanism. The refraction compensation module comprises a cylindrical lens group 106 and an inner focusing device 107, wherein the inner focusing is used for compensating the measured defocusing aberration of the human eye, and the cylindrical lens group is used for compensating the measured astigmatic aberration of the human eye. The cylindrical lens group 106 can be cylindrical mirrors with the same or different refractive powers and the same or opposite directions, and the measured astigmatism of the human eye is compensated by controlling the rotation angles of the two cylindrical mirrors.

The human eye refraction measurement subsystem and the human eye refraction compensation subsystem adopt a common light path structure, and accurate measurement and compensation of human eye refraction are realized through multiple times of measurement-correction iteration. The visual perception learning training subsystem comprises a visual target display device 301, a visual target display imaging lens 302, a reflecting mirror 303, a first spectroscope 104, a second spectroscope 105, a cylindrical lens group 106 and an inner focusing device 107. The visual target display device may be selected from a CRT display, a commercial projector, a liquid crystal display, a plasma display, an electroluminescent display, an organic light emitting display.

The visual perception learning and training subsystem and the human eye refractive compensation subsystem adopt a common light path structure, visual perception learning and training are carried out after refractive error compensation, the visual perception learning and training is not influenced by the refractive error of the human eye, and the optimal visual perception learning and training effect can be obtained. The visual perception learning training subsystem tests the visual function of the human eyes by using a psychophysics method in the visual perception learning training, selects the spatial frequency corresponding to the preset human eye contrast threshold value for training according to the human eye contrast threshold value of the tested person under different spatial frequencies, and measures and judges the training effect after the training is finished. The present disclosure includes the following concepts:

concept 1. a visual perception learning training instrument, comprising:

the human eye refractive measurement subsystem is used for measuring and obtaining ametropia information of the testee;

a human eye refraction compensation subsystem for correcting the human eye defocusing and astigmatism of the human subject according to the measured ametropia information; and

and the visual perception learning training subsystem is used for providing a visual perception learning training task for the human subject based on the measurement information of the human eye refraction measurement subsystem and the adjustment operation of the human eye refraction compensation subsystem.

Concept 2. according to the visual perception learning training instrument of concept 1, the human eye refraction compensation subsystem corrects the human eye defocus and astigmatism of the human eye of the human subject by controlling the inner focusing device and the cylindrical lens group.

Concept 3. the visual perception learning and training instrument according to concept 1, wherein the visual perception learning and training subsystem generates graphs with different spatial frequencies and/or different contrasts on the sighting target display device, and displays the graphs to the human subject after passing through the refraction compensation subsystem, so as to perform human eye visual function measurement and visual perception learning and training tasks.

Concept 4. the visual perception learning trainer according to concept 1, wherein,

the human eye refraction measurement subsystem comprises an infrared light source, a collimating lens, a diaphragm and a beacon light imaging lens.

Concept 5. the visual perception learning training instrument according to concept 4, wherein:

the infrared light source is selected from an infrared light emitting tube, an infrared laser diode and a super-radiation infrared light emitting diode.

Concept 6. the visual perception learning trainer according to concept 4 or 5, wherein,

the wavelength band of the infrared light source is 750nm-1000 nm.

Concept 7. the visual perception learning trainer according to concept 4 or 5, wherein:

the infrared light source is a near-infrared beacon light source, and the human eye refractive measurement subsystem measures by using the near-infrared beacon light source to obtain the ametropia information of the human subject.

Concept 8. the visual perception learning trainer according to concept 1, wherein,

the human eye refraction compensation subsystem comprises a refraction compensation module, the refraction compensation module comprises an inner focusing device and a cylindrical lens group, the inner focusing device is used for compensating the measured defocusing aberration of the human eye, and the cylindrical lens group is used for compensating the measured defocusing aberration of the human eye.

Concept 9. the visual perception learning trainer according to concept 8, wherein,

the cylindrical lens group can be cylindrical mirrors with the same or different refractive powers and the same or opposite directions, and the measured astigmatism of human eyes is compensated by controlling the rotating angles of the two cylindrical mirrors.

Concept 10 the visual perception learning trainer according to

concept

8 or 9, wherein the human eye refractive compensation subsystem further comprises a control mechanism for controlling the inner focusing apparatus and the cylindrical lens group to correct the ametropia based on the measured ametropia information.

Concept 11. a visual perception learning trainer according to concept 1, wherein,

the human eye refraction measurement subsystem and the human eye refraction compensation subsystem adopt a common light path structure.

Concept 12. the visual perception learning trainer according to any one of the concepts 1-11, wherein,

the human eye refraction measurement subsystem and the human eye refraction compensation subsystem realize accurate measurement and compensation of human eye refraction through multiple times of measurement-correction iteration.

Concept 13. a visual perception learning trainer according to concept 1, wherein,

the visual perception learning training subsystem comprises: the sighting target display device, sighting target display imaging lens, reflector, first spectroscope, second spectroscope, cylindrical lens group, internal focusing device.

Concept 14. the visual perception learning trainer according to concept 13, wherein,

the optotype display device is selected from a CRT display, a commercial projector, a liquid crystal display, a plasma display, an electroluminescence display, and an organic light emitting display.

Concept 15. the visual perception learning trainer according to concept 13, wherein,

the visual perception learning and training subsystem and the human eye refractive compensation subsystem adopt a common light path structure, and visual perception learning and training are carried out after refractive error compensation, so that the influence of the human eye refractive error is eliminated.

Concept 16. a visual perception learning training instrument according to concept 1, wherein,

the visual perception learning and training subsystem tests the visual function of the human eyes by using a psychophysics method in the visual perception learning and training, selects the spatial frequency corresponding to the preset human eye contrast threshold value for training according to the human eye contrast threshold value of the tested person under different spatial frequencies, and measures and judges the training effect after the training is finished.

Concept 17. a visual perception learning training system, which comprises a beacon light source 101, a collimating lens 102, a beacon diaphragm 103, a beacon light imaging lens 109, a first beam splitter 104, a second beam splitter 105, a cylindrical lens group 106, an internal focusing device 107, an imaging camera 201, a camera imaging lens 202, a sighting target display device 301, a sighting target display imaging lens 302, and a reflector 303.

Concept 18. according to the visual perception learning training system of concept 17, when the system operates, the beacon light source 101 is first turned on, the beacon light is collimated into parallel light by the collimating lens 102, the parallel light passes through the beacon diaphragm 103 to form an annular target, and then the parallel light passes through the beacon light imaging lens 109, the first beam splitter 104, the second beam splitter 105, the cylindrical lens group 106 and the inner focusing device 107 in sequence and is emitted into the human eye 108 in parallel.

Concept 19. the visual perception learning training system according to concept 18, wherein the system is operated such that if the eye to be measured is an emmetropic eye, the annular object is imaged on the retina Er, and light reflected from the fundus passes through the pupil and then passes through the second spectroscope 105, and a clear standard annular image is formed on the imaging camera 201 by the camera imaging lens 202.

Concept 20. the visual perception learning training system according to concept 19, wherein, when the system is in operation,

if the human eye 108 has ametropia, the size and shape of the annular image formed on the imaging camera 201 are changed, the defocus value and the astigmatism value of the ametropia are calculated and obtained through comparison with the standard annular image, and the relative rotation of the cylindrical lens group 106 and/or the displacement generated by the inner focusing device 107 are controlled to compensate the ametropia of the human eye.

Concept 21. the visual perception learning and training system according to any one of concepts 17 to 20, wherein when the system is operated, a high-resolution visual target image can be generated on the visual target display device 301, and enters the human eye 108 through the visual target display imaging lens 302, the reflecting mirror 303, the first spectroscope 104, the second spectroscope 105, the cylindrical lens group 106, and the inner focusing device 107, and since the refractive error of the objective refraction is compensated by the cylindrical lens group 106 and/or the inner focusing device 107 at this time, the image on the visual target display device 301 is clearly imaged on the retina Er, and the visual function test and the visual perception learning and training task are completed by controlling the visual target display device.

The disclosure has thus been described in connection with the preferred embodiments. It should be understood that various other changes, substitutions, and additions may be made by those skilled in the art without departing from the spirit and scope of the present disclosure. The scope of the invention is therefore not limited to the particular embodiments described above, but rather should be determined by the claims that follow.

Claims

1. A visual perception learning training instrument comprising:

2. A visual perception learning training instrument according to claim 1, wherein said human eye refraction compensation subsystem corrects the human eye defocus and astigmatism of the human eye of the human subject by controlling the inner focusing device and the cylindrical lens group.

3. A visual perception learning training instrument according to claim 1, wherein the visual perception learning training subsystem generates graphs with different spatial frequencies and/or different contrasts on the visual target display device, and displays the graphs to the human subject after passing through the refraction compensation subsystem for human eye visual function measurement and visual perception learning training tasks.

4. A visual perception learning trainer according to claim 1, wherein,

5. A visual perception learning trainer according to claim 4 wherein:

6. A visual perception learning trainer according to claim 4 or 5, wherein,

the wavelength band of the infrared light source is 750nm-1000 nm.

7. A visual perception learning trainer according to claim 4 or 5 wherein:

8. A visual perception learning trainer according to claim 1, wherein,

9. A visual perception learning trainer according to claim 8 wherein,

10. A visual perception learning trainer according to claim 8 or 9 wherein the human eye refractive compensation subsystem further comprises a control mechanism for controlling the cylindrical lens group and the inner focusing means to correct ametropia in dependence on the measured ametropia information.