CN209826666U - Non-contact type perimeter based on feedback interaction of display equipment - Google Patents
Non-contact type perimeter based on feedback interaction of display equipment Download PDFInfo
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- CN209826666U CN209826666U CN201920276222.4U CN201920276222U CN209826666U CN 209826666 U CN209826666 U CN 209826666U CN 201920276222 U CN201920276222 U CN 201920276222U CN 209826666 U CN209826666 U CN 209826666U
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Abstract
The utility model relates to a non-contact type perimeter based on feedback interaction of display equipment, which comprises an inspection end display, an eye movement acquisition module, a processing module and an input module, wherein the inspection end display, the eye movement acquisition module and the input module are all electrically connected with the processing module; the examination end display is used for alternately presenting a fixed viewpoint and a stimulation point, the eye movement acquisition module is used for acquiring eye movement information generated by a subject in an examination process, and the processing module is used for obtaining an examination result according to the eye movement information. This novel perimeter, for standard perimeter, small, the portability is good, makes the perimeter change in popularizing, adopts the eye to move the technique simultaneously and realizes non-contact interaction, realizes full-automatic feedback interaction, has simplified operation flow, has widened the age-appropriate scope of visual field inspection.
Description
Technical Field
The utility model relates to an ophthalmology inspection technical field, in particular to interactive non-contact perimeter of feedback based on display device.
Background
The perimeter is a professional instrument used for measuring the visual field range of eyeballs and performing medical ophthalmology nerve tests, is usually used for visual field examination in clinic, performs auxiliary diagnosis on various eye diseases with visual field defect symptoms, such as visual and optic nerve diseases including glaucoma, retinal pigment degeneration, retinal detachment and the like, and is an essential auxiliary diagnostic instrument in the medical ophthalmology field.
The static visual field refers to the peripheral space region which can be seen when the eyeball is immobilized in the right front direction, and the clinical result of the static visual field inspection with the central 30 degrees is taken as the main auxiliary diagnosis basis of visual field defect diseases. Most clinics and hospitals currently use standard automated perimeter (as shown in figure 1) for perimetry screening. Before examination, the examinee needs to properly adjust the relative height between the human body and the equipment and fix the head at a specified position, and at the moment, the front of the examinee is a white hemispherical visual field screen, LED lamps are implanted in different positions of the screen, so that stimulation light spots with variable positions and intensities can be presented by changing the voltage at two ends. During examination, a subject needs to keep a central point right in front of fixation all the time, a certain point of a visual field screen presents a stimulating visual target with specific stimulation intensity at regular intervals, if the visual target is visible, the subject needs to manually trigger a responder in a state of keeping fixation until the visual field sensitivity of all visual field points is examined, and the visual field examination is finished. Although the standard perimeter can perform the visual field inspection, the following two major defects exist, which make the visual field inspection difficult to be widely used:
1. large volume and poor portability
The medical standard perimeter occupies more than 1 square, weighs hundreds of kilograms, is poor in portability, and generally needs a fixed use place; and the LED display screen is composed of a precise optical module and a mechanical mechanism (for example, an LED lamp is embedded in a specific position on the back of the hemispherical visual field screen by punching), and the manufacturing and transportation cost is high. The two reasons make the visual field examination difficult to be popularized to primary hospitals, various visual detection institutions, schools, families and the like, and cause great obstruction to timely finding potential visual field defect patients in the vast population, timely carrying out early intervention treatment on visual field defect diseases such as glaucoma and the like and carrying out prognosis follow-up work.
2. The interaction is complex, and the user experience is poor
There are three main problems for the subject: firstly, the head needs to be fixed on the chin rest before visual inspection, so that the use comfort is reduced; secondly, the fixed viewpoint of the screen needs to be continuously watched in the whole process of examination, namely the sight line needs to be kept not to be attracted by the stimulating sighting marks appearing around the visual field, and the examinee is required to have good self-control capability; thirdly, when a certain stimulating visual target is visible, the examinee needs to quickly press the responder while fixing the sight, and the requirement on the operation ability of the examinee is high. In combination with the second and third points, the standard visual field inspection method is not well suited for the elderly, children, and partially handicapped people who are inconvenient to operate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve the above-mentioned not enough that exists among the prior art, provide a mutual non-contact perimeter of feedback based on display device.
In order to realize the purpose of the utility model, the embodiment of the utility model provides a following technical scheme:
a non-contact type perimeter based on feedback interaction of display equipment comprises an inspection end display, an eye movement acquisition module, a processing module and an input module, wherein the inspection end display, the eye movement acquisition module and the input module are all electrically connected with the processing module; the examination end display is used for alternately presenting a fixed viewpoint and a stimulation point, the eye movement acquisition module is used for acquiring eye movement information generated by a subject in an examination process, and the processing module is used for obtaining an examination result according to the eye movement information.
In a further optimized scheme, the inspection end display is sleeved with a light shield. Through the setting of lens hood, can avoid light interference, improve the degree of accuracy of inspection result.
In a further optimized scheme, the monitoring terminal display is electrically connected with the processing module and is used for displaying the state information of the subject in the examination process. Through the setting of supervision end display, can be convenient for medical personnel to realize observing the effect of inspection process to remind the experimenter when necessary.
In one embodiment, the eye movement collection module comprises an infrared light source for emitting infrared light to the eyeball of the subject and an image sensor for collecting eye movement information of the eyeball of the subject after being irradiated by the infrared light. The infrared light source can be one or more. The infrared light source is preferably disposed below the inspection side display. So set up, not only conveniently realize eye movement information acquisition, also do not occupy extra space.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the portability is good. The utility model provides a perimeter hardware part comprises two display device at most, a treater, eye movement module and lens hood, and small, the portability is good for standard perimeter, makes the perimeter easily popularize, is convenient for carry out early examination, carry out relevant treatment and rehabilitation evaluation to visual field defect diseases such as glaucoma to comparatively hidden visual field defect patient among the normal crowd.
2. The non-contact full-automatic feedback based on the eye movement technology is more friendly to interaction. The utility model provides a perimeter uses the display device as the presentation platform of the visual field stimulating sighting mark, and does not need the subject to fix the head position; meanwhile, non-contact interaction is realized by adopting an eye movement technology, namely, the visual stimulation visual targets in the visual field of the natural saccade of the eyeballs replace key interaction, the visual field range of a testee is automatically calculated through eye movement data after a series of stimulation visual targets are presented, no manual input is needed in the inspection process, full-automatic feedback interaction is realized, high fixation is not needed to be maintained in the whole inspection process, the operation process is simplified, and the age-suitable range of visual field inspection is widened.
3. The detection result is stable and reliable. The utility model provides a field of vision inspection that goes on based on display device's perimeter adopts the eye to move interactive mode, effectively utilizes the stress instinct of people to produce the eye and moves data for the result is reliable and stable, is difficult for producing the deviation because of subject's subjective factor (if the subject probably wrong according to the responder in standard field of vision inspection), has improved the efficiency and the level of field of vision inspection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, 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, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of a standard automatic perimeter in the prior art.
FIG. 2 is a schematic diagram of an external structure of a non-contact type perimeter based on feedback interaction of a display device in an embodiment.
FIG. 3 is a schematic diagram of the modules of the non-contact type perimeter based on the feedback interaction of the display device in the embodiment.
Description of the drawings
The system comprises an inspection end display 1, a computer host 2, an eye movement acquisition module 3, a light shield 4, a supervision end display 5 and an input device 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 2-3, the present embodiment provides a non-contact type perimeter based on feedback interaction of a display device, including a storage module, a display module, an input module, an eye movement acquisition module, and a processing module. In the visual field inspection process, the storage module is used for storing the instructions of the visual field inspection software system and inspection related data; the display module is used for showing a program interface (mainly used for alternately displaying a fixed viewpoint and a stimulation point with a specific position and stimulation intensity), and possibly displaying or playing required prompt information; the input module is used for controlling the program process (such as exiting the visual field checking program); the eye movement acquisition module is used for acquiring real-time eye movement information (such as sight line tracks, fixation points and the like) of a subject in the visual field inspection process, comparing the eye movement information with current stimulation point preset information (such as the positions of the stimulation points on a screen) in the appearing period of each stimulation point, determining that the input information is that the subject can see the current stimulation point when the similarity reaches a certain threshold value, and transmitting the input information to the processing module if the similarity is not visible; the processing module performs program background operation processing, so as to determine the position, color, stimulus intensity and other information of each stimulus point in the appearing period of each stimulus point, transmit the information to the display module for display, give the result of the current examination according to the current examination data (and historical visual field examination result and relevant information of a subject) after the examination is finished, and be used for controlling the communication (such as an external printer) between the processing module and each external device.
For the above-mentioned eye movement acquisition module, one possible eye movement acquisition method is: at least one group of infrared rays are emitted to at least one eyeball of a subject, reflection is generated on the cornea and the pupil of the eye of the subject, and the cornea-pupil vector on the eye reflection image is collected through an image sensor, so that the eye movement information is obtained. Before the eye movement acquisition module is used for the visual field inspection, a subject needs to perform eye movement calibration on an inspected eye and ensure that the accuracy of calibration data reaches a certain standard, and the calibration mode can be selected as follows: 9-point calibration, 5-point calibration, 3-point calibration, 1-point calibration, free calibration and the like; if the eye movement calibration is performed in a time period shortly before the visual field inspection, it is checked whether the calibration data is available.
Whether real-time data according to the field of vision inspection in-process need show and look over for the supervisor, the utility model provides a perimeter can divide into two kinds of hardware architecture of unsupervised formula and supervision formula.
An unsupervised formula: the hardware structure of the perimeter in this mode at least comprises a display device (such as a liquid crystal display) as an inspection end, a processor (such as a computer host), an eye movement acquisition module, a light shield arranged on the display of the inspection end and an input device (such as a keyboard and a mouse). The eye movement acquisition module mainly comprises an infrared light source (shown by two gray circles on a checking end display 1 in fig. 2) and an image sensor, can be external hardware, and can also be a display embedded module. The light shield serves to ensure that the stimulation intensity of the stimulation points present on the display device is hardly disturbed by external ambient light. The input device is mainly used for program process control.
Secondly, a supervision formula: in the mode, the hardware structure of the perimeter is added with at least one display device serving as a monitoring end on the basis of an unsupervised mode, and input devices are configured as required. In the visual field inspection process, the inspection end display device alternately presents the fixation point and the stimulation point, and the supervision end display device displays the state information (such as pupil size, eyeball image and the like) of some testees in the inspection process, so that a supervisor (such as medical staff, a system administrator and the like) can conveniently and properly control the test process (for example, when the continuous fixation loss is found according to the eyeball image, the supervisor can timely remind the testees). The input device should be at least configured to the monitor display device for program process control.
It should be noted that, in this embodiment, the inspection method of the perimeter provided by the present invention is not described in more detail, because the inspection method of the perimeter is not improved in this embodiment, and a method of a standard perimeter is adopted. However, compared with the standard perimeter, the perimeter of the present embodiment has the following advantages in terms of hardware structure:
1. has the advantage of portability
The utility model provides a perimeter hardware part is by two display device at most, a treater, eye movement collection module and lens hood constitute, small, the portability is good for standard perimeter, makes the perimeter easily popularize, is convenient for carry out early examination, carry out relevant treatment and rehabilitation evaluation to visual field defect diseases such as glaucoma to comparatively hidden visual field defect patient among the normal crowd.
2. Non-contact full-automatic feedback interaction based on eye movement technology is more friendly
The utility model provides a perimeter uses the display device as the presentation platform of the visual field stimulating sighting mark, and does not need the subject to fix the head position; meanwhile, non-contact interaction is realized by adopting an eye movement technology, namely, the visual stimulation visual targets in the visual field of the natural saccade of the eyeballs replace key interaction, the visual field range of a testee is automatically calculated through eye movement data after a series of stimulation visual targets are presented, no manual input is needed in the inspection process, full-automatic feedback interaction is realized, high fixation is not needed to be maintained in the whole inspection process, the operation process is simplified, and the age-suitable range of visual field inspection is widened.
3. The detection result is stable and reliable
The utility model provides a field of vision inspection that goes on based on display device's perimeter adopts the eye to move interactive mode, effectively utilizes the stress instinct of people to produce the eye and moves data for the result is reliable and stable, is difficult for producing the deviation because of subject's subjective factor (if the subject probably wrong according to the responder in standard field of vision inspection), has improved the efficiency and the level of field of vision inspection.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (7)
1. A non-contact type perimeter based on feedback interaction of display equipment is characterized by comprising an inspection end display, an eye movement acquisition module, a processing module and an input module, wherein the inspection end display, the eye movement acquisition module and the input module are all electrically connected with the processing module; the examination end display is used for alternately presenting a fixed viewpoint and a stimulation point, the eye movement acquisition module is used for acquiring eye movement information generated by a subject in an examination process, and the processing module is used for obtaining an examination result according to the eye movement information.
2. The non-contact perimeter based on feedback interaction of display devices as claimed in claim 1, wherein said inspection end display is sleeved with a light shield.
3. The non-contact perimeter based on feedback interaction of display device of claim 1, further comprising a monitor end display electrically connected to the processing module for displaying status information of the subject during the examination.
4. The non-contact perimeter based on feedback interaction of display device of claim 1, wherein said eye movement collection module comprises an infrared light source and an image sensor, said infrared light source is used for emitting infrared light to the eyeball of the subject, said image sensor is used for collecting the eye movement information of the eyeball of the subject after being irradiated by said infrared light.
5. The non-contact perimeter of claim 4, wherein the infrared light source is located below the inspection end display.
6. The non-contact perimeter based on feedback interaction of display devices of claim 1, wherein said processing module is a host computer.
7. A display device based feedback interaction touchless perimeter according to claim 1, wherein said input module is a keyboard and/or mouse.
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| CN201920276222.4U CN209826666U (en) | 2019-03-05 | 2019-03-05 | Non-contact type perimeter based on feedback interaction of display equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109875495A (en) * | 2019-03-05 | 2019-06-14 | 四川大学 | It is a kind of by display equipment the contactless full-automatic feedback visual field based on |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109875495A (en) * | 2019-03-05 | 2019-06-14 | 四川大学 | It is a kind of by display equipment the contactless full-automatic feedback visual field based on |
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