CN112890763B

CN112890763B - Method and device for detecting visual function of instant back image and visual function detection equipment

Info

Publication number: CN112890763B
Application number: CN202110052681.6A
Authority: CN
Inventors: 罗辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2022-12-27
Anticipated expiration: 2041-01-15
Also published as: CN112890763A

Abstract

The invention provides a method and a device for detecting the visual function of an instant rear image and visual function detection equipment, wherein the method for detecting the visual function of the instant rear image comprises the following steps: displaying a text video, and measuring the eyeball fixation micromotion of a tested user reading the text video to obtain an eye movement waveform; analyzing the eye movement waveform to obtain a complex wave parameter of a complex wave of a high-frequency vibration wave and a drifting motion wave in the eye movement waveform and a flashing wave parameter of a flashing wave; and matching the complex wave parameters and the flicker wave parameters with a first standard parameter library to obtain a first visual function detection result. The method for detecting the visual function of the immediate afterimage detects the visual function by detecting the fixation micro-movement of the eyeball to obtain and analyze the corresponding eye movement waveform and the obtained related parameters, thereby improving the accuracy of the visual function detection and improving the early detection rate of the abnormal visual function.

Description

Method and device for detecting visual function of instant back image and visual function detection equipment

Technical Field

The invention relates to the field of visual function detection, in particular to a method and a device for detecting visual function of an instant back image, visual function detection equipment and a readable storage medium.

Background

Myopia is one of the most common eye diseases causing visual impairment and blindness, and existing visual function tests related to myopia are generally performed manually and by depending on subjective perception of patients, so that the objectivity and early detection rate of abnormal visual function tests are generally not as satisfactory as possible due to technical irregularity of testing personnel, and the guidance of the test results is low.

Disclosure of Invention

In view of the above problems, the present invention provides a visual function detection method, a visual function detection apparatus, a visual function detection device, and a readable storage medium, so as to improve the accuracy of visual function detection, improve the early detection rate of visual function abnormality, and improve the guiding significance for myopia prevention and control. In order to achieve the purpose, the invention adopts the following technical scheme:

an immediate rear-view visual function detection method, comprising:

displaying a text video, and measuring the eyeball fixation micromotion of a tested user reading the text video to obtain an eye movement waveform;

analyzing the eye movement waveform to obtain a complex wave parameter of a complex wave of a high-frequency vibration wave and a drifting motion wave in the eye movement waveform and a flashing wave parameter of a flashing wave;

and matching the complex wave parameters and the flicker wave parameters with a first standard parameter library to obtain a first visual function detection result.

Preferably, the method for detecting an instant rearview function further comprises:

displaying an image video with a preset frame rate, and inserting a preset frame static picture into the image video at intervals of preset time;

recording the recognition rate of the detected user to the preset frame still picture, and generating a visual persistence score according to the recognition rate and a preset scoring rule;

and storing the persistence of vision score, the complex wave parameter, the flicker wave parameter, the first visual function detection result and related test parameters in a detection database in an associated manner, wherein the related test parameters comprise tested user information, test duration, test distance and test environment information.

displaying a stereoscopic vision grid map, and measuring electroretinogram oscillation potential when the detected user observes the stereoscopic vision grid map;

and analyzing the electroretinogram oscillation potential, and matching a third parameter of a preset wavelet of the electroretinogram oscillation potential with a second standard parameter library to obtain a second visual function detection result.

Preferably, in the instant rear-view function detection method, the preset frame rate is 30 frames/second or 31 frames/second, and the preset frame still pictures include 1 to 10 still pictures;

the inserting a preset frame still picture in the video at preset time intervals comprises:

respectively inserting 10 frames to 1 frame of still pictures for a preset number of times from high to low according to a preset time interval;

and when the image video is displayed for more than a first preset time length, pausing the display of the image video for a second preset time length, wherein the first preset time length is more than the second preset time length.

Preferably, in the method for detecting an instant rear-view function, the recording the recognition rate of the detected user on the preset frame still picture, and generating a persistence of vision score according to the recognition rate and a preset scoring rule includes:

and when the identification rate of the detected user to the static picture of the current frame is lower than a preset value, performing the persistence of vision scoring according to the insertion quantity of the current frame, and stopping displaying the image video.

Preferably, in the method for detecting visual function of an immediate rear image, analyzing the eye movement waveform to obtain complex parameters of high-frequency vibration waves and drifting movement waves in the eye movement waveform includes:

carrying out flicker wave filtering processing on the eye movement waveform to obtain a composite wave of the high-frequency vibration wave and the drifting movement wave;

extracting the second highest amplitude of the drifting movement wave from the composite wave, and establishing a standard wave with the amplitude frequency of 30 Hz or 31 Hz by using the second highest amplitude;

performing superposition processing by using the standard wave and the composite wave, and sequentially filtering the composite wave subjected to superposition processing to subtract secondary high amplitude;

and calculating the sum of the amplitudes of the composite waves after filtering and removing as the composite wave parameters.

Preferably, in the method for detecting an immediately-after visual function, analyzing the eye movement waveform to obtain a flicker parameter of a flicker in the eye movement waveform comprises:

filtering the eye movement waveform by high-frequency vibration waves and drifting movement waves to obtain the flickering waves;

and analyzing the flickering waves to obtain the amplitude and the corresponding frequency of each component in the flickering waves as the flickering wave parameters.

The present invention also provides an instant rear view function detecting device, comprising:

the text video display module is used for displaying a text video, measuring the eyeball fixation micromotion of the text video read by a tested user and obtaining an eye movement waveform;

the eye movement waveform analysis module is used for analyzing the eye movement waveform to obtain a complex wave parameter of a complex wave of a high-frequency vibration wave and a drifting motion wave in the eye movement waveform and a flashing wave parameter of a flashing wave;

and the detection result matching module is used for matching the complex wave parameters and the flicker wave parameters with a first standard parameter library to obtain a first visual function detection result.

The invention also provides a visual function detection device, which comprises a memory and a processor, wherein the memory stores a computer program, and the computer program executes the immediate rear-view visual function detection method when running on the processor.

The invention also provides a readable storage medium storing a computer program which, when run on a processor, performs the method of immediate rearview function detection.

The invention provides a method for detecting the visual function of an instant back image, which comprises the following steps: displaying a text video, and measuring the eyeball fixation micromotion of a tested user reading the text video to obtain an eye movement waveform; analyzing the eye movement waveform to obtain a complex wave parameter of a complex wave of a high-frequency vibration wave and a drifting motion wave in the eye movement waveform and a flashing wave parameter of a flashing wave; and matching the complex wave parameters and the flicker wave parameters with a first standard parameter library to obtain a first visual function detection result. The method for detecting the visual function of the immediate afterimage detects the vision fixation micro-movement of the eyeball to obtain and analyze the corresponding eye movement waveform, and detects the visual function by the obtained related parameters, thereby improving the accuracy of the visual function detection.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.

Fig. 1 is a flowchart of an instant rear-view function detection method according to embodiment 1 of the present invention;

FIG. 2 is a flow chart of another method for detecting an instant rearview function according to embodiment 1 of the present invention;

FIG. 3 is a flowchart of a method for detecting an instant rearview function according to embodiment 2 of the present invention;

FIG. 4 is a flowchart of a method for testing persistence of vision scoring according to embodiment 3 of the present invention;

FIG. 5 is a flowchart for analyzing eye movement waveform parameters according to embodiment 4 of the present invention;

FIG. 6 is a flow chart of another method for analyzing eye movement waveform parameters according to embodiment 4 of the present invention;

fig. 7 is a schematic structural diagram of an instant rear-view function detecting device according to embodiment 5 of the present invention.

Detailed Description

Myopia is one of the most common eye diseases causing visual impairment and blindness. And the incidence rate is on the rising trend year by year. At present, myopia of children and teenagers is advanced in onset age, high in incidence rate and in a development trend after onset. At present, no theory has been found to fully elucidate the cause and pathogenesis of myopia,

it is relatively well-accepted that there is a theory of local retinal regulation. A great deal of research finds that defocus caused by dysfunction of the retinal vision regulatory system, particularly peripheral defocus, is closely related to the onset of myopia. After defocus is formed, the retina "grows" in focus, and the axis of the eye lengthens, resulting in myopia. It is not clear how the mechanism by which the visual defocus signal is specifically identified and transmitted to the sclera affects it.

In actual clinics, the inventors found that the "in focus growth" concept was not accurate enough.

In clinic, the hypermetropia of many young children is usually in emmetropia and even in pseudomyopia, rather than hypermetropia, because of the strong enough accommodation power. In the clinical practice of two years of history, 3 small patients have small pupil optometry, namely 1-3D myopia, and 1-3D hypermetropia is found only after mydriasis, wherein two patients capable of follow-up visit finally develop emmetropia without medical lens intervention; myopia out-of-focus caused by myopia under-correction can not delay myopia development, but accelerates myopia development. The focus of these cases is not all behind the retina and cannot be explained by "in focus growth" alone.

Even if the center and the periphery of the retina are not defocused, the eyeball is in a complete vision fixation state, and the retina cannot sense the ideal object image without defocusing. Defocus should not be a direct and sufficient cause of myopia since an image without defocus is not a direct and sufficient cause of retinal imaging.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.

Example 1

Fig. 1 is a flowchart of an instant rear-view function detecting method according to embodiment 1 of the present invention, where the method includes the following steps:

step S11: and displaying the text video, and measuring the eyeball fixation micromotion of the text video read by the tested user to obtain the eye movement waveform.

The immediate image emphasizes the integrity of central and peripheral vision, while emphasizing the immediate temporal characteristics. The positive and negative afterimages caused by longer retinal adaptation due to glare or fixation are not conducive to retinal imaging and are not in the immediate range. As with the frames of video, with a series of postambles immediately adjacent, have a temporal frequency characteristic. The disappearance of one immediate image to the appearance of the next is the process by which retinal processing creates vision (retinal imaging). The high image frequency immediately after a certain range indicates that the visual information processing efficiency is high.

The formation of the immediate afterimage relies on the modulation of the scene image by retinal ganglion cells in the case of fixation micromotion. The micro-movement of fixation is divided into three modes: high frequency vibration or tremolo (tremor) corresponds to a frequency of about 30-100HZ, and drift motion (drift) corresponds to a frequency of less than 20 HZ. Flicker (microsaccade), the corresponding frequency being lowest. Adjustments and loads can alter the amplitude and composition of the waves. Hubel and the like verify that the visual pathway is intensely issued at the moment of eyeball micromotion, the response of the visual pathway is periodic, and the instant visual pathway of eyeball micromotion is intensely issued and is the key bioelectricity change on retina in the visual process. The fixation micromotion promotes the reaction of the photoreceptor cells and the formation of an immediate after-image of bipolar cells and the like, and the formation of the immediate after-image adversely affects the fixation micromotion and regulation to form a feedback regulation loop. The immediate afterimage is the result of the fixation micromotion, which is the physiological basis for human eyes to obtain clear or super-resolution vision (hyperacuity) and illusion, stereoscopic vision.

The fixation micromotion frequency, the frequency of an image immediately after the fixation and the characteristic brain electrical frequency or amplitude of a visual image processed in the brain vision are mutually influenced; when the eye is in 'resonance' and 'tuning' to express that the eye adjustment is less in time consumption and high in efficiency, the electroretinogram expresses that the amplitude of specific waves (such as O1 and O2 wavelets of electroretinogram Oscillation Potentials (OPs)) is increased, at the moment, dopamine secretion is increased by amacrine cells of the retina, the increase of the dopamine secretion promotes the release of cytokines of retinal pigment epithelium, the growth of eyeballs is controlled, the elongation of the axes of the eyes is stopped, and the myopia is inhibited; conversely, the efficiency of expression is low, the fatigue is caused, the secretion of dopamine is reduced, the sclera is further influenced to influence the chemical and physiological changes, the axis of the eye is excessively prolonged, and the myopia is formed.

In the embodiment of the invention, the micro-movement of the eyeball for fixation, namely the micro-movement of the human eye in the state of fixation, has a direct relation with visual imaging perception, and the instant visual pathway of the micro-movement of the eyeball generates strong release, which is a key bioelectricity change on the retina in the visual process. The abnormal bioelectrical influence due to the micromotion of fixation may be further transmitted to the sclera, thereby affecting the chemical and physiological changes of the sclera, lengthening the axis of the eye, and thus creating myopia. In the eyeball, the vision does not disappear immediately after imaging, but remains for a short time, which is called "persistence of vision" visually, i.e., "afterimage". The process that the vision is formed by processing and processing the retina (retina imaging) is that one instant image disappears to the next instant image, and the high frequency of the instant image in a certain range indicates that the processing efficiency of the vision information is high, and correspondingly indicates that the vision function is better.

In the embodiment of the invention, before the text video is displayed, the eyes and the viewpoint of the tested user can be corrected according to the relation between the adjustment and the load and the fixation and fixation micromotion, for example, the tested user with myopia more than 100 degrees needs to be corrected for myopia, and the test distance can be selected, for example, when the visual function is tested in the far vision, the tested user and the screen displaying the text can be separated by 5 meters, which is not limited and can be adjusted according to the test requirement. In the test environment, no other illumination is provided except for the brightness provided by the screen playing the video. When the characters are displayed, common content characters can be randomly displayed on a screen, the sizes of the characters can be adjusted according to the distance of the test distance, the characters are free from reading difficulty, and the fatigue of eyes is relieved by setting rest time in the reading process.

In the embodiment of the present invention, when or after the user to be tested reads the text video, the eyeball motion measurement device may be used to measure the micro-fixation movement in the horizontal direction of the eyeball, so as to obtain the eye movement waveform, for example, a typical eye movement waveform of 6 segments and 60 seconds may be taken, and the eye movement waveform starts from a drifting movement wave with a medium amplitude, so as to facilitate subsequent waveform analysis. After the eye movement waveform is obtained by the eye movement measuring device, the visual function detecting device can record the amplitude and the proportion of the high-frequency vibration component, the drifting movement component and the flickering component in the eye movement waveform, and can record the reading time length, the reading distance and the environment state of the detected user in a correlation manner, so that the subsequent visual function analysis can be conveniently carried out.

Step S12: and analyzing the eye movement waveform to obtain the complex wave parameters of the complex wave of the high-frequency vibration wave and the drifting movement wave in the eye movement waveform and the flashing wave parameters of the flashing wave.

In the embodiment of the invention, an algorithm or an application program for analyzing the eye movement waveform can be arranged in the visual function detection device, so that the eye movement waveform is analyzed to obtain the corresponding parameters. For example, an application program for analyzing the complex wave may be provided in the visual function detecting device, and data is sent to the complex wave analyzing application program after the eye movement waveform is obtained, so as to obtain the corresponding complex wave parameter.

Step S13: and matching the complex wave parameters and the flicker wave parameters with a first standard parameter library to obtain a first visual function detection result.

In the embodiment of the present invention, the composite wave parameter includes a sum of amplitudes of the composite waves, the sum of the amplitudes is higher to represent that the visual function is better, the flicker wave parameter includes an amplitude and a frequency of the flicker wave, and the amplitude and the frequency are higher to represent that the visual function is better, so that the composite wave parameter and the flicker wave parameter are matched with the first standard parameter library, and a corresponding first visual function detection result can be obtained. The first standard parameter library may also be a standard parameter table, or a relationship curve between parameters and visual functions, and the like, which is not limited herein. The visual function detection equipment can be provided with an application program matched with the first standard parameter library, and the obtained complex wave parameters and the obtained flicker wave parameters can be input into the application program so as to match a corresponding first visual function detection result.

In the embodiment of the invention, the visual function detection is carried out on the obtained relevant parameters by detecting the fixation micro-movement of the eyeballs to obtain and analyze the corresponding eye movement waveform, so that the visual function detection accuracy can be improved, and the early detection rate of the visual function abnormity can be improved.

Fig. 2 is a flowchart of another method for detecting an instant rearview function according to embodiment 1 of the present invention, where the method includes the following steps:

step S14: displaying an image video with a preset frame rate, and inserting a preset frame static picture in the image video at preset time intervals.

In the embodiment of the invention, the formation of the immediate afterimage depends on the modulation of the retinal ganglion cells on the scene image under the condition of the fixation micromotion, and the fixation micromotion and the adjustment are adversely affected by the formation of the immediate afterimage to form a feedback adjustment loop, so that the measurement of the immediate afterimage is carried out, and the corresponding visual function can be measured. That is, the persistence of vision pictures with different frame numbers can be inserted into a video, and the recognition rate of the tested person is tested and recorded. The higher the recognition rate is, the shorter the recognized visual persistence time of the picture is, which shows that the processing capacity is strong, the fatigue is less and the visual function is good; otherwise, it indicates weak processing ability, asthenopia and poor visual function. The theoretical best visual function of a normal person is to identify 1 frame of the 30-frame-rate video, and the theoretical lowest visual function is to fail to identify a still picture of 10 consecutive frames of the 30-frame-rate video, so that the visual functions can be divided into 11 levels from 0 to 10, and accordingly, corresponding scores can be carried out, and accordingly, the still pictures of 1 to 10 frames can be inserted at preset time intervals.

In an embodiment of the present invention, the process of inserting the preset frame still picture into the video may be implemented by using an application program, and the still frame picture may be a still picture such as a landscape, a person, a number, and a letter pre-stored in the visual function testing device, and may appear at any position in the video, and the size corresponds to the size of 0.3, 0.5, and 1.0 of the eye chart, which is not limited herein.

Step S15: recording the recognition rate of the tested user to the preset frame still picture, and generating a persistence of vision score according to the recognition rate and a preset scoring rule.

In the embodiment of the invention, the recognition rate of the detected user to the preset frame still picture can be recorded in a manual recording mode, or a microphone can be connected to the visual function testing equipment, the detected user can speak the content of the still picture through the microphone, and the visual function testing equipment recognizes the content of the still picture spoken by the detected user through voice and records the corresponding recognition rate.

In the embodiment of the invention, the visual function detection equipment is also provided with an application program based on the preset scoring rule, and the application program is input after the identification rate is obtained, so that the corresponding visual persistence score can be obtained.

Step S16: and storing the persistence of vision score, the complex wave parameter, the flicker wave parameter, the first visual function detection result and related test parameters in a detection database in an associated manner, wherein the related test parameters comprise tested user information, test duration, test distance and test environment information.

Example 2

Fig. 3 is a flowchart of an instant rear-view function detecting method according to embodiment 2 of the present invention, where the method includes the following steps:

step S31: and displaying the text video, and measuring the eyeball fixation micromotion of the text video read by the tested user to obtain the eye movement waveform.

This step is identical to the step S11, and is not described herein again.

Step S32: and analyzing the eye movement waveform to obtain the complex wave parameters of the complex wave of the high-frequency vibration wave and the drifting movement wave in the eye movement waveform and the flashing wave parameters of the flashing wave.

This step is identical to the step S12, and is not described herein again.

Step S33: and matching the composite wave parameters and the flicker wave parameters with a first standard parameter library to obtain a first visual function detection result.

This step is identical to the step S13, and is not described herein again.

Step S34: and displaying a stereoscopic vision grid graph, and measuring the electroretinogram oscillation potential when the tested user observes the stereoscopic vision grid graph.

Step S35: and analyzing the electroretinogram oscillation potential, and matching a third parameter of a preset wavelet of the electroretinogram oscillation potential with a second standard parameter library to obtain a second visual function detection result.

In the embodiment of the invention, the fixation micro-motion frequency, the frequency of the image immediately after and the characteristic brain electrical frequency or amplitude of the visual image processed in the brain vision middle area influence each other, when the fixation micro-motion frequency, the frequency of the image immediately after and the characteristic brain electrical frequency or amplitude of the visual image processed in the brain vision middle area are in a 'resonance' state and a 'tuning' state, the eye adjustment consumes less time and has high efficiency, and the electroretinogram expresses specific waves (such as O of the electroretinogram Oscillation Potential (OPs)) ₁ 、O ₂ Wavelet) is increased, at the moment, dopamine is increased by non-apoplastic cells of the retina, the increase of the dopamine secretion promotes the release of cytokines of retinal pigment epithelium, the growth of eyeballs is controlled, the elongation of the axes of the eyes is stopped, and the myopia is inhibited; conversely, the symptoms of low efficiency, fatigue and decreased dopamine secretionThe influence of the step on the sclera influences the chemical and physiological changes of the sclera, and the axis of the eye is excessively lengthened, so that myopia is formed. Therefore, the stereoscopic vision gridding chart is displayed by the visual function detection device, and the electroretinogram oscillation potential of the detected user can be measured. Wherein the predetermined wavelet comprises O ₁ Wavelet and O ₂ Wavelets, the third parameter comprising O ₁ Wavelet and O ₂ The higher the amplitude of the wavelet, the better the visual performance of the user under test.

Example 3

Fig. 4 is a flowchart of testing persistence of vision scoring according to embodiment 3 of the present invention, including the following steps:

step S41: respectively inserting 10 frames to 1 frame of still pictures of preset times from high to low in the image video according to a preset time interval;

step S42: and when the recognition rate of the detected user to the static picture of the current frame is lower than a preset value, performing the persistence of vision scoring according to the insertion quantity of the current frame, and stopping displaying the image video.

In the embodiment of the present invention, the preset frame rate of the video is 30 frames/second or 31 frames/second, and the preset frame still picture includes 1 frame to 10 frames of still pictures. For example, 10 different groups of 10 still pictures can be inserted into the video at a preset time interval for the tested user to test, the recognition rate is recorded, after the 10 different groups of 10 still pictures are tested and the recognition rate is greater than the preset value and passes, 10 different groups of 9 still pictures are inserted for the tested user to test, the recognition rate is recorded, and so on until the recognition rate fails. The preset value may be 0.9, and the like, which is not limited herein. And when the recognition rate is not passed, finishing the test and carrying out corresponding persistence of vision scoring.

Step S43: and when the image video is displayed for more than a first preset time length, pausing the display of the image video for a second preset time length, wherein the first preset time length is more than the second preset time length.

In the embodiment of the invention, because the testing time is longer, the rest time with the second preset time can be provided when the image video is displayed for more than the first preset time, so that the influence on the testing result caused by the over-fatigue of the eyes of the tested person is avoided.

Example 4

Fig. 5 is a flowchart of analyzing eye movement waveform parameters according to embodiment 4 of the present invention, which includes the following steps:

step S51: and carrying out flicker wave filtering treatment on the eye movement waveform to obtain a composite wave of the high-frequency vibration wave and the drifting movement wave.

Step S52: and extracting the second highest amplitude of the drifting motion wave from the composite wave, and establishing a standard wave with the amplitude frequency of 30 Hz or 31 Hz by using the second highest amplitude.

Step S53: and performing superposition processing by using the standard wave and the composite wave, and sequentially filtering the composite wave subjected to superposition processing to subtract the second highest amplitude.

Step S54: and calculating the sum of the amplitudes of the composite waves after filtering and removing as the composite wave parameters.

Fig. 6 is a flowchart of another method for analyzing eye movement waveform parameters according to embodiment 4 of the present invention, which further includes the following steps:

step S55: and filtering the high-frequency vibration waves and the drifting motion waves of the eye movement waveform to obtain the flashing waves.

Step S56: and analyzing the flickering waves to obtain the amplitude and the corresponding frequency of each component in the flickering waves as the flickering wave parameters.

Example 5

Fig. 7 is a schematic structural diagram of an instant rear-view function detecting device provided in embodiment 5 of the present invention.

The instant rearview function detecting apparatus 700 includes:

the text video display module 710 is used for displaying a text video, measuring the eyeball fixation micromotion of the text video read by a tested user, and obtaining an eye movement waveform;

the eye movement waveform analysis module 720 is configured to analyze the eye movement waveform to obtain a complex wave parameter of a complex wave of a high-frequency vibration wave and a drifting motion wave in the eye movement waveform, and a flashing wave parameter of a flashing wave;

the detection result matching module 730 is configured to match the first standard parameter library with the complex wave parameter and the flicker wave parameter to obtain a first visual function detection result.

In the embodiment of the present invention, for more detailed description of functions of the modules, reference may be made to contents of corresponding parts in the foregoing embodiment, which are not described herein again.

In addition, the invention also provides a visual function detection device, which comprises a memory and a processor, wherein the memory can be used for storing a computer program, and the processor enables the visual function detection device to execute the functions of the modules in the method or the immediate-rear-image visual function detection device by running the computer program.

The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the stored data area may store data (such as audio data, a phonebook, etc.) created according to the use of the visual function detecting apparatus, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The embodiment also provides a readable storage medium for storing a computer program used in the above visual function detection device.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An instant rear vision function detecting device, comprising:

the text video display module is used for displaying a text video and measuring the eyeball fixation micromotion of a tested user reading the text video to obtain an eye movement waveform;

the detection result matching module is used for matching the composite wave parameters and the flicker wave parameters with a first standard parameter library to obtain a first visual function detection result;

the device comprises a static picture inserting module, a static picture extracting module and a static picture extracting module, wherein the static picture inserting module is used for displaying an image video with a preset frame rate, and inserting a preset frame static picture in the image video at intervals of preset time, the preset frame rate is 30 frames/second or 31 frames/second, and the preset frame static picture comprises 1-10 frames of static pictures;

the vision persistence score generation module is used for recording the recognition rate of the detected user to the preset frame static picture and generating a vision persistence score according to the recognition rate and a preset scoring rule;

the association storage module is used for storing the persistence of vision score, the complex wave parameter, the flicker wave parameter, the first visual function detection result and relevant test parameters into a detection database in an association manner, wherein the relevant test parameters comprise tested user information, test duration, test distance and test environment information;

wherein the eye movement waveform analysis module comprises:

the compound wave generating module is used for filtering the eye movement waveform to obtain a compound wave of the high-frequency vibration wave and the drifting motion wave;

the standard wave establishing module is used for extracting the second highest amplitude of the drifting motion wave from the composite wave and establishing a standard wave with the amplitude frequency of 30 Hz or 31 Hz by using the second highest amplitude;

the waveform processing module is used for performing superposition processing on the standard wave and the composite wave and sequentially filtering the composite wave subjected to superposition processing to subtract secondary high amplitude;

and the complex wave parameter generation module is used for calculating the sum of the amplitudes of the complex waves after filtering and removing processing to be used as the complex wave parameter.

2. The device for detecting an immediately subsequent image visual function according to claim 1, further comprising:

the electroretinogram oscillation potential measuring module is used for displaying a stereoscopic vision grid map and measuring the electroretinogram oscillation potential when the measured user observes the stereoscopic vision grid map;

and the first detection result matching module is used for analyzing the electroretinogram oscillation potential, and matching a third parameter of a preset wavelet of the electroretinogram oscillation potential with a second standard parameter library to obtain a second visual function detection result.

3. The device according to claim 1, wherein the still picture insertion module comprises:

the still picture inserting submodule is used for respectively inserting the still pictures of 10 frames to 1 frame of the preset times from high to low according to the preset time interval;

and the pause module is used for pausing the display of the second preset time length of the image video when the display of the image video is greater than the first preset time length, wherein the first preset time length is greater than the second preset time length.

4. The device of claim 1, wherein the persistence score generating module comprises:

and the persistence of vision scoring generation submodule is used for performing persistence of vision scoring according to the insertion quantity of the current frame and stopping displaying the image video when the recognition rate of the detected user to the static picture of the current frame is lower than a preset value.

5. The device according to claim 1, wherein the eye movement waveform analysis module further comprises:

the flicker wave generating module is used for filtering the high-frequency vibration wave and the drifting motion wave of the eye movement waveform to obtain the flicker wave;

and the flash wave parameter generation module is used for analyzing the flash waves to obtain the amplitudes and the corresponding frequencies of all components in the flash waves as the flash wave parameters.

6. A visual function detection apparatus comprising a memory and a processor, the memory storing a computer program which, when run on the processor, performs an immediate-rear visual function detection method, the method comprising:

analyzing the eye movement waveform to obtain a complex wave parameter of a complex wave of a high-frequency vibration wave and a drifting movement wave in the eye movement waveform and a flashing wave parameter of a flashing wave;

matching the complex wave parameters and the flash wave parameters with a first standard parameter library to obtain a first visual function detection result;

displaying an image video with a preset frame rate, and inserting a preset frame static picture in the image video at preset time intervals;

recording the recognition rate of the tested user to the preset frame still picture, and generating a persistence of vision score according to the recognition rate and a preset scoring rule;

storing the persistence of vision score, the complex wave parameter, the flicker wave parameter, the first visual function detection result and related test parameters in a detection database in an associated manner, wherein the related test parameters comprise tested user information, test duration, test distance and test environment information;

wherein, analyzing the eye movement waveform to obtain the complex wave parameters of the high-frequency vibration wave and the drifting movement wave in the eye movement waveform comprises:

7. A readable storage medium storing a computer program which, when run on a processor, performs an immediate rearview function detection method, the method comprising:

matching the complex wave parameters and the flash wave parameters with a first standard parameter library to obtain a first visual function detection result; displaying an image video with a preset frame rate, and inserting a preset frame static picture in the image video at preset time intervals;