CN115944266A - Visual function determination method and device based on eye movement tracking technology - Google Patents
Visual function determination method and device based on eye movement tracking technology Download PDFInfo
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Abstract
The present disclosure provides a visual function screening method and device based on eye tracking technology, which plays multimedia information and screening instructions corresponding to current visual function screening, wherein the screening instructions are provided with corresponding human eye watching ranges; acquiring the position of a human eye gazing point of a user to be screened based on an eye tracking technology; if the position of the eye fixation point is within the eye fixation range and reaches the set duration, judging that the current visual function screening is passed; the multimedia information corresponding to the previous visual function screening, the current visual function screening and the next visual function screening is determined based on the strength of the visual functions. The method captures the gazing point position through the eye movement tracking technology, judges whether the gazing point position, the gazing track or the gazing time and other eye movement data are consistent with expectations or not, realizes automatic judgment and conclusion output of the visual function screening result, does not need professional doctors and resources, and reduces the difficulty of large-scale screening.
Description
Technical Field
The present disclosure relates to the field of visual function detection technologies, and in particular, to a visual function screening method and device based on an eye tracking technology.
Background
Visual information is the most abundant information that human beings obtain from the external world, also is the important component that maintains normal life and work. The good visual function is a precondition for acquiring visual information from the outside, and relates to people of all ages. With the development of economic society and the popularization of electronic equipment, people have higher demands on visual functions. The visual function examination is the basis for evaluating the visual function and is an effective way for knowing the prevention and control effect of the visual function abnormality.
Standard logarithmic visual acuity chart and color blindness chart are the most common visual acuity and color vision examination methods at present, but they are subjective tests and can be completed under the guidance of professional clinicians; and the problems of relatively insufficient total quantity of the ophthalmic medical resources, unbalanced distribution and the like exist at present, so that the difficulty of large-scale regular screening of visual functions in communities, physical examination centers, comprehensive hospitals or large-scale merchants is increased.
Therefore, a more objective and reliable visual function screening mode without the guidance of clinicians is needed, which helps to popularize and popularize large-scale visual function screening, early detects abnormal visual functions such as ametropia, strabismus, achromatopsia and the like, and simultaneously reduces the examination and diagnosis burden of clinicians.
Disclosure of Invention
The present disclosure provides a visual function screening method and system based on an eye tracking technology, so as to solve the technical problems that the existing visual function detection methods recognized by the inventor are all subjective detection, professional physicians and corresponding medical resources are required, and the difficulty in large-scale regular screening of visual functions is increased.
The disclosure provides a visual function screening method based on an eye tracking technology, which includes:
playing multimedia information and a screening instruction corresponding to the current visual function screening, wherein the screening instruction is provided with a corresponding human eye watching range;
acquiring the position of a human eye gaze of a user to be screened based on an eye tracking technology;
if the position of the eye watching point is in the eye watching range and reaches a set time length, judging that the current visual function screening is passed, repeating the steps to screen the next level of visual function, and otherwise, entering the previous level of visual function screening;
obtaining a screening result;
the multimedia information corresponding to the previous level visual function screening, the current level visual function screening and the next level visual function screening is determined based on the strength of the visual functions.
According to the visual function screening method based on the eye movement tracking technology, visual function screening comprises visual screening and color vision screening.
According to the visual function screening method based on the eye tracking technology, the visual function screening method further comprises the following steps:
and acquiring the registration information of the user to be screened so as to associate the screening result with the registration information.
According to the visual function screening method based on the eye tracking technology provided by the present disclosure, before the multimedia information and the screening instruction corresponding to the current visual function screening are played, the method further includes:
playing multimedia information and a tracking instruction corresponding to the eye tracking calibration, wherein the tracking instruction is provided with a corresponding gaze detection position;
acquiring a gazing point position of a user to be screened based on an eye tracking technology;
and if the gazing point position is consistent with the gazing detection position, entering a visual function screening process.
According to the visual function screening method based on the eye tracking technology provided by the present disclosure, after the obtaining of the screening result, the method further includes:
and generating a visual function screening report according to the screening result, and storing the visual function screening report to a cloud server for a user with authority to check.
The present disclosure also provides a visual function screening device based on eye movement tracking technology, including:
the playing module is used for playing the multimedia information and the screening instruction corresponding to the current visual function screening, wherein the screening instruction is provided with a corresponding human eye watching range;
the eye tracking module is provided with a detection lens corresponding to the visual function screening and is used for acquiring the position of a human eye gazing point of a user to be screened based on an eye tracking technology;
the visual function screening module is used for judging that the current visual function screening is passed if the position of the human eye fixation point is within the fixation range and reaches a set time length, repeating the steps to screen the next level of visual function, and otherwise, entering the previous level of visual function screening;
the multimedia information corresponding to the previous level visual function screening, the current level visual function screening and the next level visual function screening is determined based on the strength of the visual functions.
According to the visual function screening device based on the eye tracking technology, visual function screening comprises visual screening and color vision screening;
the playing module is used for playing vision screening multimedia information and a vision screening instruction corresponding to the current vision screening, wherein the vision screening instruction is provided with a corresponding first-person eye watching range; the system is also used for playing color vision screening multimedia information and a color vision screening instruction corresponding to the current color vision screening, wherein the color vision screening instruction is provided with a corresponding second human eye watching range;
and the visual function screening module is used for judging that the current visual function screening is passed if the human eye gazing point position is in the first human eye gazing range or the second human eye gazing range and reaches the set duration, repeating the steps to screen the next-stage visual function, and otherwise, entering the previous-stage visual function screening.
According to the eye tracking technology-based visual function screening device provided by the disclosure, the eye tracking module is further used for playing the multimedia information and the tracking instruction corresponding to the eye tracking calibration before playing the multimedia information and the screening instruction corresponding to the current visual function screening; acquiring a gazing point position of a user to be screened based on an eye tracking technology; if the gazing point position is consistent with the gazing detection position, entering a visual function screening process;
and the tracking instruction is provided with a corresponding gaze detection position.
According to this eye tracking technology's visual function screening device who provides, still include:
and the self-service information acquisition module is used for registering the user to be screened and acquiring the registration information of the user to be screened so as to associate the screening result with the registration information.
According to this visual function screening device who provides based on eye tracking technique, still include:
the result output module is used for generating a visual function screening report according to the screening result, and storing the visual function screening report to a cloud server for a user with authority to check; and also for printing the visual function screening report.
The beneficial effect of this disclosure mainly lies in: the method comprises the steps of capturing the position of a gazing point through an eye tracking technology, judging whether eye movement data such as the position of the gazing point, a gazing track or gazing time are consistent with expectations or not by applying a computer logic algorithm, realizing automatic judgment and conclusion output of a visual function screening result, and filling the gap in the aspect of objective visual function screening at present.
It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and do not necessarily limit the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of a visual function screening method based on an eye tracking technology according to an embodiment of the present disclosure;
fig. 2 is a second schematic flowchart of a visual function screening method based on eye tracking technology according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of the position of a sighting target in an embodiment of the disclosure;
fig. 4 is a third schematic flowchart of a visual function screening method based on an eye tracking technology according to an embodiment of the present disclosure;
fig. 5 is a schematic block diagram of a visual function screening device based on eye tracking technology according to an embodiment of the present disclosure.
Detailed Description
The technical solutions of the present disclosure will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present disclosure, but not all embodiments.
All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing and simplifying the present disclosure, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in a specific case to those of ordinary skill in the art.
Fig. 1 is a schematic flow chart of a visual function screening method based on an eye tracking technology according to an embodiment of the present disclosure, and as shown in fig. 1, the present disclosure provides a visual function screening method based on an eye tracking technology, including:
s110, playing multimedia information and a screening instruction corresponding to the current visual function screening, wherein the screening instruction is provided with a corresponding human eye watching range; multimedia information includes, but is not limited to, text and animation. The screening instructions include a preset voice prompt.
S120, acquiring the position of a human eye gazing point of a user to be screened based on an eye movement tracking technology; the eye movement tracking means records the movement process of the fixation point of the human eye relative to the head, collects relevant data such as the number of the fixation points, fixation time, total saccade times and the like of the human eye in the process of processing visual information, positions the pupil position by shooting a series of eye images, identifies the pupil and the corneal reflection center in each image by applying an image processing technology, and judges and outputs the fixation point position of the human eye in the screen under the assistance of a computer logic algorithm. The eye tracking technology can be used for determining the eye fixation position, the eye fixation mode and the eye fixation sequence in the appointed task time, and converting the eye fixation position into digital information which can be identified and analyzed by a computer language.
S130, if the position of the eye watching point is in the eye watching range and reaches a set time length, judging that the current visual function screening is passed, repeating the steps to screen the next visual function, and otherwise, entering the previous visual function screening; and if the next level visual function screening is passed, continuing to enter the next level visual function screening. In the detection process, two eyes are respectively detected.
S140, obtaining a screening result; and after the detection is finished, the visual function screening results of the two eyes are respectively stored and output to obtain the final screening result.
The multimedia information corresponding to the previous visual function screening, the current visual function screening and the next visual function screening is determined based on the strength of the visual functions or is randomly set.
Optionally, the visual function screening includes visual screening and color vision screening.
The visual acuity screening test optotypes comprise E, C, LEA, numbers, letters, HOTV and the like, and one optotype is selected for each detection. The color vision screening visual target comprises a series of inspection maps with different numbers, letters, graphs or paths, which are designed by applying a pseudo-homochromy principle, and the detection limit is selected to be one type at each time.
The size of the basic visual target is designed according to the following formula (taking the E visual target as an example):
height, width h = tg (5/60) × 670 of the basic optotype;
stroke width w = tg (1/60) × 670 of the basic optotype;
fig. 3 is a schematic position diagram of the sighting target in the embodiment of the disclosure, as shown in fig. 3, the increment rate of the sighting target is calculated according to 10 √ 10, 5 sighting targets are arranged in each test page and are arranged in an equidistant circle mode, the absolute position of the sighting target is variable, and the relative position is not variable. The crowding phenomenon causes the weak eyes to have higher recognition capability on the single sighting marks than the sighting marks with the same size but arranged in a row, so that the detection result of the single sighting mark is higher than that of the sighting marks in the row. To avoid this phenomenon, each optotype is surrounded by a line having the same width as the stroke of the optotype.
The log of minimum angle of resolution (logMAR) that can be detected by vision screening is 1.5,1.2,1.0,0.9,0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1.
The E visual target in the vision screening test visual target detects two eye movement functions of fixation and saccade, and the other visual targets only detect one eye movement function of fixation.
Each detection map for color vision screening is provided with 2 or more different graphs or detection paths arranged according to a certain sequence, and the absolute positions of the graphs and the detection paths are variable while the relative positions are unchanged.
Optionally, the visual function screening method based on the eye tracking technology provided by the present disclosure further includes:
and acquiring registration information of a user to be screened so as to associate the screening result with the registration information.
When registering a personal account, basic information including name, gender, age, nationality, identification number, date of birth, contact information, common place of residence and the like is required to be input. The visual function screening report sheet comprises basic information (name, sex, age, ethnicity and date of birth) in the personal account of the person to be examined, detection date, vision screening result, color vision screening result and doctor suggestion based on the screening result.
Fig. 2 is a schematic flowchart of a visual function screening method based on an eye tracking technology according to an embodiment of the present disclosure, as shown in fig. 2, before the multimedia information and the screening instruction corresponding to the current visual function screening are played, the method further includes:
s210, playing multimedia information and a tracking instruction corresponding to eye movement tracking calibration, wherein the tracking instruction is provided with a corresponding gaze detection position; the multimedia information comprises characters and animation, and the tracking instruction is a voice prompt tone.
S220, obtaining the gazing point position of the user to be screened based on an eye tracking technology;
and S230, if the gazing point position is consistent with the gazing detection position, entering a visual function screening process.
Optionally, after obtaining the screening result, the method for screening visual function based on eye tracking technology further includes:
and generating a visual function screening report according to the screening result, and storing the visual function screening report to a cloud server for a user with authority to check.
The report sheet is stored in the cloud server, medical staff with the permission can call the detection result by logging in the background server, and the report sheet can be printed by the staff to be detected.
Fig. 4 is a third schematic flowchart of a visual function screening method based on an eye tracking technology according to an embodiment of the present disclosure, and as shown in fig. 4, the visual function screening method based on the eye tracking technology according to the present disclosure is exemplified below with reference to the embodiment.
1) The person to be checked logs in the registered personal account after registering the account or directly logs in the registered personal account. The process of registering an account includes: establishing an account name and an account password, and inputting basic information, wherein the basic information comprises name, gender, age, nationality, identification card number, birth date, contact way, common residence and the like.
2) And selecting at least one item from the vision screening and the color vision screening as the detection item, and determining the visual target corresponding to the detection item.
3) And determining the corresponding detection lens according to the selected detection item, and sending a voice prompt to the person to be detected to prompt the person to be detected to fix the head and the hand at the specified position. The vision screening uses a +1.50D working distance lens with a polarized light film attached to the surface, and the color vision screening uses a pure plano lens. An indicating line is arranged between the two lenses and used for indicating the position of the nose tip; the lens is 0.67m away from the detection screen, and the screening distance of the vision can be adjusted to infinity by applying the +1.50D dioptric lens at the distance; the polarized film can be used for separating two eyes so as to be used for monocular vision screening.
4) Judging whether the positions of the head and the hand of the person to be detected are accurate or not, and if so, performing eye tracking calibration;
5) The eye tracking calibration process is played to show text and animation, and simultaneously, "please watch the calibration process carefully, and watch the image appearing in the screen in the calibration process until the image disappears, if you confirm that you know, please say a confirm or click a confirm key on the left side of the top surface of the remote control device" voice prompt tone ". And after receiving a 'confirm' voice command or a confirm key command, entering a formal eye tracking calibration program, automatically running the calibration program for 2 times, if the calibration fails, re-entering the calibration program, if the calibration succeeds, testing the calibration effect, judging whether the gaze position calculated by an eye tracking instrument in the detection screen is consistent with the corresponding gaze detection position in the detection screen through a computer algorithm based on logical operation, if so, considering that the eye tracking calibration is accurate, and carrying out the next step.
6) If the person to be detected selects the vision screening item, automatically playing the schematic characters and animations in the vision screening process, and simultaneously playing' please watch the detection process carefully, watching the corresponding image in the screen according to the voice prompt in the detection process, if only one correct answer exists, stably watching the image still, and if two or more correct answers exist, repeatedly watching the correct answer. If you confirm that you are aware of it, please say ok or click the ok button "voice prompt tone" on the left side of the top surface of the remote control device. And after receiving a 'confirm' voice command or a confirm key command, entering a pre-detection process, wherein a pre-detection page is a single 0.05-size sighting target positioned in the center of the screen, and lines with the same stroke width as the sighting target are surrounded around the periphery of the pre-detection page to eliminate the crowding phenomenon and prompt a correct watching range. The polarizing film allows the optotype to be viewed by a single eye only. And playing a voice prompt tone for 'please watch the visual target in the center of the screen and keep still'. Judging the relation between the eye gaze position calculated by the eye tracking device and the correct gaze range through a computer algorithm, if the eye gaze position is stabilized within the correct gaze range for more than 5s, and meanwhile, if the proportion of the gaze time of the eye within the correct gaze range exceeds 50%, entering a formal detection flow, otherwise prompting a gaze error and selecting to return to teaching or quit detection through a voice command or a remote control device; entering a sighting target size detection page reflecting that logMAR is 0.5, playing a voice instruction of a corresponding detection sighting target, such as 'please watch an icon of an opening left/right/up/down', 'please watch a number 7', 'please watch a letter T', and the like, and judging whether the duration time of the position of the gazing point of the human eye in the correct watching range and the ratio of the gazing time of the human eye in the correct watching range exceed a set value within a specified time:
if so, judging that the current detection page passes, entering a next-level visual target (such as logMAR = 0.7) detection page, repeating the detection until the detection page is judged to be failed or the detection page with logMAR of 1.5 passes, finishing the detection, and recording and outputting a logMAR value corresponding to the size of the visual target at the moment as a vision screening result of the eye to be inspected;
if not, judging that the detection is not passed, entering a detection page of a previous-level sighting target (such as logMAR = 0.3), repeating the detection until the result of the detection page is passed, finishing the detection, recording and outputting a logMAR value corresponding to the size of the sighting target at the moment as a vision screening result of the eye to be detected, and if the result of the detection page with the logMAR of 0.1 is still not passed, outputting 'logMAR < 0.1' as the vision screening result of the eye to be detected.
And returning to the pre-detection process to screen the vision of the opposite eye, and storing and outputting logMAR values respectively measured by two eyes after the detection is finished.
7) If the person to be detected selects the vision screening item, the schematic characters and the animation in the color vision screening process are automatically played, and simultaneously, the 'please carefully watch the detection flow', and the corresponding images or tracks in the screen are watched according to the voice prompt in the detection process. If you confirm that you have known, please say the enter key "voice prompt tone" on the left side of the top surface of the remote control unit. The method comprises the steps that a 'determination' voice instruction or a determination key instruction is received and then enters a detection process, a certain chromatogram detection page is randomly entered, and voice indication instructions of corresponding chromatograms are played, such as 'please watch on a number 2', 'please watch on a letter H', 'please watch on according to a number prompt sequence in a green track line' and the like, a system calculates the relation between the human eye watching point position and a correct watching range through a logic algorithm, if the duration time of the human eye watching point position in the correct watching range within a specified time and the watching time proportion of human eyes in the correct watching range exceed a set value, the current detection page is judged to pass, and if not, the current detection page does not pass; and after the detection is finished, entering a next chromatogram detection page, repeating the detection until all the preset chromatograms are detected, outputting a normal result if all the detection results are passed, otherwise, analyzing the chromatogram and outputting a corresponding detection result.
8) Basic information (name, sex, age, ethnicity and date of birth), detection date, vision screening result, color vision screening result and medical advice based on the screening result in the personal account of the person to be detected are output to a self-service visual function screening report, the report is stored in a cloud server, and medical personnel with authority can call the detection result by logging in a background server; the person to be detected can print the report by clicking a print button in the electronic display screen.
The following describes a visual function screening device based on eye tracking technology provided in the present disclosure, and the visual function screening device based on eye tracking technology described below and the visual function screening method based on eye tracking technology described above may be referred to in correspondence with each other.
Fig. 5 is a schematic block diagram of a visual function screening device based on eye tracking technology according to an embodiment of the present disclosure, and as shown in fig. 5, the present disclosure further provides a visual function screening device based on eye tracking technology, including:
the playing module 510 is configured to play multimedia information and a screening instruction corresponding to a current video function screening, where the screening instruction is provided with a corresponding human eye watching range;
the eye tracking module 520 is provided with detection lenses corresponding to the visual function screening and is used for acquiring the positions of the eye gazing points of the users to be screened based on an eye tracking technology;
a visual function screening module 530, configured to determine that the current visual function screening is passed if the position of the eye gaze point is within the gaze range and reaches a set duration, repeat the above steps to perform next-level visual function screening, and otherwise enter previous-level visual function screening;
the multimedia information corresponding to the previous visual function screening, the current visual function screening and the next visual function screening is determined based on the strength of the visual functions.
As one example, visual function screening includes visual screening and color vision screening;
the playing module is used for playing vision screening multimedia information and a vision screening instruction corresponding to the current vision screening, wherein the vision screening instruction is provided with a corresponding first-person eye watching range; the system is also used for playing color vision screening multimedia information and a color vision screening instruction corresponding to the current color vision screening, wherein the color vision screening instruction is provided with a corresponding second human eye watching range;
and the visual function screening module is used for judging that the current visual function screening is passed if the human eye gazing point position is in the first human eye gazing range or the second human eye gazing range and reaches the set duration, repeating the steps to screen the next-stage visual function, and otherwise, entering the previous-stage visual function screening.
As an embodiment, the eye tracking module is further configured to play the multimedia information and the tracking instruction corresponding to the eye tracking calibration before playing the multimedia information and the screening instruction corresponding to the current visual function screening; acquiring a gazing point position of a user to be screened based on an eye tracking technology; if the gazing point position is consistent with the gazing detection position, entering a visual function screening process;
and the tracking instruction is provided with a corresponding gaze detection position.
As an embodiment, further comprising:
and the self-service information acquisition module is used for registering the user to be screened and acquiring the registration information of the user to be screened so as to associate the screening result with the registration information.
As an embodiment, further comprising:
the result output module is used for generating a visual function screening report according to the screening result, and storing the visual function screening report to a cloud server for a user with authority to check; and also for printing the visual function screening report.
The self-service visual function screening instrument comprises a self-service information acquisition module, a detection device module, an eye tracker control module, a data information module, a visual function screening module and a result output module, wherein the self-service visual function screening instrument is used for establishing and designing a visual function detection scene and system by utilizing the eye tracker, C # software and the like; the detection device module comprises a touch control type electronic display operation screen subunit, a +1.50D working distance mirror unit, a left pure flat light mirror unit, a right pure flat light mirror unit, a head fixing device subunit, a remote control device subunit and a detection display screen subunit, wherein the left surface and the right surface of the detection display screen subunit are respectively provided with a polarized light film; the data information module comprises a data acquisition subunit, a data processing subunit, a data output subunit and a data storage subunit; the visual function screening module comprises a vision screening subunit and a color vision screening subunit; the result output module comprises a cloud storage server subunit and a printing device subunit.
The method comprises the steps that a person to be detected lightly touches and activates a touch electronic operation display screen of the self-service vision function screening instrument, a personal account is logged in or registered through a two-dimensional code in a scanning screen, a subject controls a detection lens to move up and down to a proper height through adjusting an upper key and a lower key in the touch electronic operation display screen and then clicks and determines, the electronic operation display screen plays ' fixing instruments with heads fixed in front of the inspection screen and fixing right hands to remote control devices beside the fixing instruments, please note that nose tips are parallel to prompt lines, a convex part in a head fixing device needs to be pressed flat through the front pressing of forehead and chin, the thumbs of the right hands are placed at detection buttons of the remote control devices, and the rest four fingers press the convex parts in front of the remote control devices to form ' voice prompt tones ' and simultaneously display corresponding characters and animations. The examinee fixes the head and the right hand in the head fixing device and the remote control device which are provided with the baroreceptors according to the prompt, after the baroreceptors detect that the fixation is finished, the electronic screen plays that the fixation is successful, namely, the electronic screen enters a calibration process, and please keep the head and the right hand at the same position to play a voice prompt tone and enter the next step, if the fixation is not successful after 10 minutes, the electronic screen automatically exits the test, or an exit button in the electronic screen is clicked to exit the test.
In summary, the present disclosure has the following technical effects:
(1) The eye tracking technology and the computer technology are applied to the field of visual function screening. The method comprises the steps of capturing the position of a gazing point through an eye tracking technology, judging whether eye movement data such as the position of the gazing point, a gazing track or gazing time are consistent with expectations or not by applying a computer logic algorithm, realizing automatic judgment and conclusion output of a visual function screening result, and filling the gap in the aspect of objective visual function screening at present.
(2) The method and the device do not need the guidance of professional clinicians in the detection process, reduce the clinical diagnosis and treatment burden, and are convenient for large-scale popularization and promotion.
(3) The video function screening result is output and stored to the cloud server, and technical support is provided for establishment of a nationwide video function screening database and resource information sharing under the background of the big data era.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present disclosure, and not for limiting the same; while the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.
Claims (10)
1. A visual function screening method based on an eye tracking technology is characterized by comprising the following steps:
playing multimedia information and a screening instruction corresponding to the current visual function screening, wherein the screening instruction is provided with a corresponding human eye watching range;
acquiring the position of a human eye gazing point of a user to be screened based on an eye tracking technology;
if the eye watching point position is in the eye watching range and reaches a set time length, judging that the current visual function screening is passed, repeating the steps to screen the next level of visual functions, and otherwise, entering the previous level of visual function screening;
obtaining a screening result;
the multimedia information corresponding to the previous level visual function screening, the current level visual function screening and the next level visual function screening is determined based on the strength of the visual functions.
2. The eye tracking technology-based visual function screening method according to claim 1, wherein the visual function screening includes visual screening and color vision screening.
3. A visual function screening method based on eye tracking technology according to claim 1, further comprising:
and acquiring the registration information of the user to be screened so as to associate the screening result with the registration information.
4. The eye tracking technology-based visual function screening method according to claim 1, before playing the multimedia information and the screening instruction corresponding to the current visual function screening, further comprising:
playing multimedia information and a tracking instruction corresponding to eye movement tracking calibration, wherein the tracking instruction is provided with a corresponding gaze detection position;
acquiring a gazing point position of a user to be screened based on an eye tracking technology;
and if the gazing point position is consistent with the gazing detection position, entering a visual function screening process.
5. The eye tracking technology-based visual function screening method according to claim 1, further comprising, after the obtaining of the screening result:
and generating a visual function screening report according to the screening result, and storing the visual function screening report to a cloud server for a user with authority to check.
6. A visual function screening device based on eye movement tracking technology, comprising:
the playing module is used for playing the multimedia information and the screening instruction corresponding to the current visual function screening, wherein the screening instruction is provided with a corresponding human eye watching range;
the eye tracking module is provided with a detection lens corresponding to the visual function screening and is used for acquiring the position of a human eye gazing point of a user to be screened based on an eye tracking technology;
the visual function screening module is used for judging that the current visual function screening is passed if the position of the human eye fixation point is within the fixation range and reaches a set time length, repeating the steps to screen the next level of visual function, and otherwise, entering the previous level of visual function screening;
the multimedia information corresponding to the previous visual function screening, the current visual function screening and the next visual function screening is determined based on the strength of the visual functions.
7. A visual function screening device based on eye tracking technology according to claim 6, wherein the visual function screening comprises visual screening and color vision screening;
the playing module is used for playing the vision screening multimedia information and the vision screening instruction corresponding to the current vision screening, wherein the vision screening instruction is provided with a corresponding first human eye watching range; the system is also used for playing color vision screening multimedia information and a color vision screening instruction corresponding to the current color vision screening, wherein the color vision screening instruction is provided with a corresponding second human eye watching range;
and the visual function screening module is used for judging that the current visual function screening is passed if the human eye gazing point position is in the first human eye gazing range or the second human eye gazing range and reaches the set duration, repeating the steps to screen the next-stage visual function, and otherwise, entering the previous-stage visual function screening.
8. The eye tracking technology-based visual function screening device according to claim 7, wherein the eye tracking module is further configured to play the multimedia information and the tracking instruction corresponding to the eye tracking calibration before playing the multimedia information and the screening instruction corresponding to the current visual function screening; acquiring a gazing point position of a user to be screened based on an eye tracking technology; if the gazing point position is consistent with the gazing detection position, entering a visual function screening process;
and the tracking instruction is provided with a corresponding gazing detection position.
9. A visual function screening device based on eye tracking technology according to claim 6, further comprising:
and the self-service information acquisition module is used for registering the user to be screened and acquiring the registration information of the user to be screened so as to associate the screening result with the registration information.
10. A visual function screening device based on eye tracking technology according to claim 6, further comprising:
the result output module is used for generating a visual function screening report according to the screening result, and storing the visual function screening report to a cloud server for a user with authority to check; and also for printing the visual function screening report.
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