CN112656363A - Vision detection system and vision detection method - Google Patents

Abstract

The present disclosure describes a vision testing system, which includes a host device including a display module for displaying optotypes of a visual chart, the host device receiving a direction indicating signal transmitted by a subject using a remote control device in a wireless manner, and if the display module continuously displays optotypes in the same line, the host device counts the continuous correct first times, the second correct times in the preset time, the third correct times of the detection row and the total detection time of the detection row of the examinee, and determining whether the first condition, the second condition, and the third condition are satisfied, and if any one of the three conditions is satisfied, and the host equipment performs one-line down adjustment operation based on the current line, and if the three conditions are not met, the host equipment performs one-line up adjustment operation based on the current line, monitors the up-adjustment or down-adjustment operation of the multiple detection lines, and obtains the eyesight of the left eye or the right eye of the examinee. According to the present disclosure, a vision testing system and a vision testing method capable of autonomous testing are provided.

Description

Vision detection system and vision detection method

Technical Field

The present disclosure generally relates to a vision testing system and a vision testing method.

Background

In recent years, the population with myopia has become more and more big, with the proportion of teenager population being higher. In order to avoid the influence of unclear vision on life, most myopes wear myopia glasses to correct vision. However, when the actual vision does not match the power of the glasses, the degree of myopia is deepened. In this case, the situation that the actual vision of the myope is not matched with the degree of the glasses can be effectively avoided by regularly checking the vision.

However, the conventional vision test requires the examiner to go to a hospital or a related ophthalmic institution to wait for the examination by the examiner such as a doctor, which is time-consuming and labor-consuming.

Disclosure of Invention

The present disclosure has been made in view of the above-described state of the art, and an object thereof is to provide a vision testing system and a vision testing method capable of performing autonomous testing.

To this end, the first aspect of the present disclosure provides a vision testing system, which includes a host device and a remote control device, the host device includes a display module for displaying a single optotype in an eye chart, the host device receives a direction indication signal sent by a subject using the remote control device in a wireless manner, if the display module continuously displays optotypes in the same row, the host device counts a first correct number of times that the subject is continuously correct, a second correct number of times within a preset time, a third correct number of times of the detection row, and a total detection time of the detection row based on the direction indication signal and an actual direction of the optotype displayed by the display module, and determines whether a first condition, a second condition, and a third condition are satisfied, the first condition is that the first correct number of times is greater than a first threshold value, the second condition is that the second correct number of times is greater than a second threshold value, the third condition is that the third correct time is greater than a third threshold, the third threshold is greater than the second threshold, each line has a corresponding first threshold, a second threshold and a third threshold, if any one of the first condition, the second condition and the third condition is satisfied, the host device performs a line down adjustment operation based on the current line, if none of the first condition, the second condition and the third condition is satisfied, the host device performs a line up adjustment operation based on the current line, the host device monitors an up adjustment or a down adjustment operation of a plurality of detection lines, if a continuous down adjustment operation or a continuous up adjustment operation is monitored and a first preset number of times of alternating the up adjustment operation and the down adjustment operation is monitored, the host device obtains a detection time curve with the horizontal coordinate and the total detection time of the detection line of the visual chart as a vertical coordinate based on the total detection time of each detection line and each line, and if continuous down-regulation operation or continuous up-regulation operation is not monitored and the up-regulation operation and the down-regulation operation are monitored to be alternately carried out for a second preset time, the vision of the left eye or the right eye of the examinee is detected by the down-regulation operation, and the direction indicating signal is wirelessly transmitted to the host equipment by the remote control equipment. In this case, the examinee can perform vision test using the host device and the remote control device to obtain the vision of the left eye or the right eye, whereby autonomous test can be realized, and the waiting of test personnel in line for test can be avoided.

In the vision inspection system according to the first aspect of the present disclosure, the first threshold, the second threshold, and the third threshold of each inspection line may be adjusted based on a time interval between two adjacent direction indicator signals on the same line, and the first threshold, the second threshold, and the third threshold of the line may be increased as the time interval between two adjacent direction indicator signals on the same line is longer. This can improve the detection accuracy.

In addition, in the vision testing system according to the first aspect of the present disclosure, optionally, the host device further includes an infrared ranging module, where the infrared ranging module is configured to determine an actual distance from the subject to the display module, and adjust a size ratio of the optotype displayed in the display module based on the actual distance. This can be applied to various measurement environments.

In addition, in the vision testing system according to the first aspect of the present disclosure, optionally, the host device further includes an input module configured to enter historical vision testing information of a subject, and the host device determines an initial testing line based on the historical vision testing information and the actual distance, where the initial testing line is a testing line where a visual target displayed by the display module for the first time is located. This can reduce the time required for visual acuity test.

In addition, in the vision testing system according to the first aspect of the present disclosure, optionally, the host device stores at least one type of visual acuity chart, and the display module displays the corresponding type of visual acuity chart based on the selection of the subject. Thereby, different requirements or preferences of the examinee can be adapted.

Further, in the vision testing system relating to the first aspect of the present disclosure, optionally, the host device further generates a test report of the vision of the subject. Thereby, a test report of the eyesight of the subject can be obtained.

In addition, in the vision testing system according to the first aspect of the present disclosure, optionally, the remote control device has a power button for controlling power-on, standby, or power-off of the host device, and the remote control device has an indication button that generates four direction indication signals respectively representing directions of the opening of the optotype of "up, down, left, and right". Thereby, different signals can be sent to the host device by the remote control device.

A second aspect of the present disclosure provides a vision testing method applied to the vision testing system according to the first aspect, including: based on a single visual target of the visual chart displayed by the host equipment, the remote control equipment sends a direction indicating signal to the host equipment in a wireless mode; the host equipment receives the direction indicating signal, and when the sighting marks in the same line are continuously displayed, the host equipment counts the continuous correct first correct times of the examinee, the second correct times in the preset time, the third correct times of the detection line and the total detection time of the detection line on the basis of the direction indicating signal and the actual direction of the displayed sighting marks; the host device determines whether a first condition, a second condition and a third condition are met, if any one of the first condition, the second condition and the third condition is met, a line down operation is performed based on a current line, if none of the first condition, the second condition and the third condition is met, a line up operation is performed based on the current line, the first condition is that the first correct times are greater than a first threshold value, the second condition is that the second correct times are greater than a second threshold value, the third condition is that the third correct times are greater than a third threshold value, the third threshold value is greater than the second threshold value, and each line has a corresponding first threshold value, a corresponding second threshold value and a corresponding third threshold value; and the host device monitors the up-regulation or down-regulation operation of a plurality of detection lines, if the continuous down-regulation operation or the continuous up-regulation operation is monitored and the up-regulation operation and the down-regulation operation are monitored to be alternately carried out for a first preset number of times, a detection time curve taking the horizontal coordinate of the detection behavior of the visual chart and the total detection time as the vertical coordinate is obtained based on the total detection time of each detection line and each line, the detection time curve is derived to obtain the slope of each detection line, then the maximum slope with the maximum absolute value is determined, the vision of the left eye or the right eye of the examinee is obtained based on the maximum slope, and if the continuous down-regulation operation or the continuous up-regulation operation is not monitored and the up-regulation operation and the down-regulation operation are monitored to be alternately carried out for a second preset number of times, the vision of the left eye or the right eye of the examinee. Therefore, autonomous detection can be realized, detection by detection personnel waiting in line is avoided, and the vision of the detected person is obtained.

In the eyesight detecting method according to the second aspect of the present disclosure, the first threshold, the second threshold, and the third threshold of each detection line may be adjusted based on a time interval between two adjacent direction indicator signals on the same line, and the first threshold, the second threshold, and the third threshold of the line may be increased as the time interval between two adjacent direction indicator signals on the same line is longer. This can further improve the detection accuracy.

In addition, in the eyesight detecting method according to the second aspect of the present disclosure, optionally, the host device is further configured to determine an actual distance from the subject to the display module, and adjust a size ratio of the optotypes displayed in the display module based on the actual distance. This can be applied to various measurement environments.

According to the present disclosure, a vision testing system and a vision testing method capable of autonomous testing can be provided.

Drawings

Embodiments of the present disclosure will now be explained in further detail, by way of example only, with reference to the accompanying drawings, in which:

fig. 1 is a diagram illustrating a scenario application of an exemplary vision detection system to which the present disclosure relates.

Fig. 2 is a block diagram illustrating an example vision detection system of the present disclosure.

Fig. 3 is a block diagram of a host device illustrating an example of concern of the present disclosure.

Fig. 4 is a schematic structural diagram of a host device showing an example of concern of the present disclosure.

Fig. 5 is a graph illustrating an example of concern of the present disclosure.

Fig. 6 is a block diagram of a remote control device illustrating an example of the present disclosure.

Fig. 7 is a schematic configuration diagram of a remote control device showing an example of the present disclosure.

Fig. 8 is a flow chart illustrating an example vision testing method to which the present disclosure relates.

Detailed Description

Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same components are denoted by the same reference numerals, and redundant description thereof is omitted. The drawings are schematic and the ratio of the dimensions of the components and the shapes of the components may be different from the actual ones.

It should be noted that the terms "first," "second," "third," and "fourth," etc. in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The present disclosure relates to a vision testing system and a vision testing method. The vision detection system and the vision detection method based on the present disclosure can facilitate the self-detection of the examinee. The vision detection system and the vision detection method have high detection accuracy.

Fig. 1 is a diagram illustrating a scenario application of an exemplary vision detection system to which the present disclosure relates. Fig. 2 is a block diagram illustrating an example vision detection system of the present disclosure.

In some examples, as shown in fig. 1 and 2, the vision detection system 1 may include a host device 10 and a remote control device 20. The remote control device 20 transmits a direction instruction signal to the host device 10 by wireless, and the host device 10 obtains the eyesight of the left eye or the right eye based on the direction instruction signal. The vision testing system 1 of the present disclosure has higher testing accuracy. The vision testing system 1 based on the present disclosure can facilitate the subject to autonomously test.

In some examples, the vision detection system 1 according to the present disclosure may be applied in an application scenario as shown in fig. 1. In the application scenario shown in fig. 1, the subject 2 can autonomously detect vision based on the vision inspection system 1. Specifically, the examinee 2 can stand facing the host device 10 and hold the blocking member to block one eye to detect the other eye, the host device 10 displays optotypes in the eye chart, the examinee 2 holds the remote control device 20 to issue direction indicating signals based on the displayed optotypes, and the host device 10 receives the direction indicating signals to make statistics and judgment to generate the eyesight of the left eye or the right eye of the examinee 2. In other scenarios, the subject 2 may be seated in front of the host device 10 for vision testing. The subject 2 can also manually occlude one eye for visual acuity testing of the other eye.

Fig. 3 is a block diagram of the host device 10 showing the example involved in the present disclosure. Fig. 4 is a schematic configuration diagram of the host device 10 showing the involved example of the present disclosure. Fig. 5 is a graph illustrating an example of concern of the present disclosure.

In some examples, as described above, the vision detection system 1 may include the host device 10 (see fig. 2).

In some examples, the host device 10 may be one of a laptop, tablet, desktop, or the like. In other examples, host device 10 may be a dedicated vision detection device as shown in fig. 4.

In some examples, as shown in fig. 3, host device 10 may include a display module 11. The display module 11 may be used to display optotypes in an eye chart.

In some examples, the display mode of the display module 11 may be a single optotype display mode. Thereby, the optotype in the display module can be observed by the examinee.

In some examples, in the single optotype display mode, the display module 11 may display a certain optotype in the eye chart at a time. I.e. the display module 11 may display a single optotype in the eye chart at a time.

In some examples, the optotypes in the single optotype display mode may appear randomly. Therefore, the influence of the examinee on the vision detection result through the back vision chart can be reduced. This can improve the detection accuracy.

In some examples, in the single-optotype display mode, the display module 11 may randomly display a single optotype of the same detection line until the display module 11 is changed to the corresponding detection line for display after the host device 10 performs a tuning-up or tuning-down operation (described later).

In some examples, the display module 11 may be a display screen a of a dedicated vision testing device as shown in fig. 4.

In some examples, the display module 11 may display optotypes of different types of eye charts based on the subject's selection. Specifically, the host device 10 may store at least one type of visual acuity chart, and the display module 11 may display the corresponding type of visual acuity chart based on the selection of the subject. Thereby, different requirements or preferences of the examinee can be adapted.

In some examples, as shown in fig. 3, host device 10 may include a wireless signal receiving module 12. The wireless signal receiving module 12 may be used to receive signals transmitted by the remote control device 20. The signal transmitted by the remote control device 20 may include, for example, a direction indicating signal (described later). In other words, the host device 10 can receive the direction indication signal transmitted by the subject using the remote control device 20 in a wireless manner. The direction indicating signal may be an answer to the subject's optotype direction given by the remote control device 20.

In some examples, if the display module 11 continuously displays the optotypes of the same line, the host device 10 may count a first correct number of times that the subject is continuously correct, a second correct number of times within a preset time, and a third correct number of times of the detection line based on the direction indication signal and the actual direction of the optotypes displayed by the display module 11. When the direction of the opening of the visual target represented by the direction indicating signal is the same as the actual direction of the visual target displayed by the display module 11, the direction indicating signal is considered as a correct answer. The first correct times may be times of starting to answer pairs consecutively since the first direction indicator signal of the detection line is a correct answer. The second correct times may be times when the direction indication signal received within a preset time from the first direction indication signal of the detection line is a correct answer. The third correct number may be the number of times that the direction indicator is the correct answer since the first direction indicator of the detection line. Wherein, the third correct times may not be limited by the preset time.

In some examples, as described above, the display module 11 may randomly display a single optotype of the same detection line until the host device 10 performs a set-up or set-down operation. If the display module 11 continuously displays the icons in the same row, the host device 10 may count the total detection time of the detection row. The total detection time may be a time interval from the display module 11 displaying the first visual target of a random occurrence of a certain detection row to the detection row performing the up-or down-adjustment operation.

In some examples, host device 10 may determine whether the first condition, the second condition, and the third condition are satisfied. The first condition may be that the first correct time is greater than a first threshold, the second condition may be that the second correct time is greater than a second threshold, and the third condition may be that the third correct time is greater than a third threshold.

In some examples, the third threshold may be greater than the second threshold.

In some examples, each row (i.e., each detection row) may have a respective first threshold, second threshold, and third threshold. In some examples, the first threshold for different detection rows may be the same. The second threshold values for different detection rows may be the same. The third threshold values for different detection rows may be the same.

In some examples, the first threshold may be different for different detection rows. The second threshold may be different for different detection rows. The third threshold may be different for different detection rows.

In some examples, the first threshold, the second threshold, and the third threshold for each detected row may be adjusted based on a time interval of two adjacent direction indication signals of the same row.

In some examples, the first threshold, the second threshold, and the third threshold of the row are larger if the time interval between two adjacent direction indicating signals of the same row is longer. This can further improve the detection accuracy.

In some examples, if any of the first condition, the second condition, and the third condition is satisfied, the host device 10 may perform a down-line operation based on the current line. That is, if any one of the first condition, the second condition, and the third condition is satisfied, the host device 10 may perform a down-line operation based on the current line.

In some examples, if none of the first, second, and third conditions are satisfied, host device 10 may perform a line up operation based on the current line.

In some examples, host device 10 may monitor the up or down operation of multiple detection rows. Specifically, during the detection process, the host device 10 may perform an up-down operation or a down-up operation between different detection lines, and the host device 10 may monitor an up-down condition or a down-up condition of the detection line corresponding to the optotype displayed by the display module 11.

In some examples, as described above, host device 10 may count the total detection time of each detection line corresponding to the optotype displayed by display module 11.

In some examples, host device 10 may determine the vision of the subject based on monitoring the up and down operations.

In some examples, if the continuous down-adjustment operation or the continuous up-adjustment operation is not monitored and the up-adjustment operation and the down-adjustment operation are monitored alternately for a second preset number of times, the detecting act of performing the down-adjustment operation is the vision of the left or right eye of the subject.

In some examples, if the continuous down-adjustment operation or the continuous up-adjustment operation is monitored and the up-adjustment operation and the down-adjustment operation are monitored alternately for a first preset number of times, the host device 10 obtains a detection time curve with the abscissa and the ordinate of the detection behavior of the visual chart based on the total detection time of each detection row and each row. Specifically, if the host device 10 monitors the continuous down-adjustment operation or the continuous up-adjustment operation first, and then monitors that the up-adjustment operation and the down-adjustment operation are performed alternately for a first preset number of times, the host device 10 can obtain a detection time curve with the horizontal coordinate of the detection behavior of the visual chart and the vertical coordinate of the total detection time based on the total detection time of each detection line and each line.

In some examples, the detection time profile may, for example, result in a detection time profile as shown in fig. 5. The examination time chart shown in fig. 5 corresponds to an examination subject who can quickly recognize the direction of the optotype at both examination lines 0.25 and 0.3, vision recognition becomes increasingly difficult at 0.4, 05, 0.6, and 0.8, and the examination subject cannot recognize the direction of the optotype at 1.0.

In some examples, the first preset number and the second preset number may be the same. But examples of the present disclosure are not limited thereto and the first preset number and the second preset number may not be the same.

In some examples, the detection time curve may be derived to obtain the slope of each detection row. The maximum slope with the largest absolute value may be determined based on the slope of each detection line. The detection line of the maximum slope whose absolute value is the largest corresponds to the vision of the currently detected eye of the subject. In other words, the vision of the left or right eye of the subject is obtained based on the maximum slope.

In some examples, host device 10 may also include an infrared ranging module (not shown). The infrared ranging module may be used to determine the actual distance of the subject to the display module 11.

In some examples, host device 10 may adjust the size scale of the optotypes displayed in display module 11 based on the actual distance. This can be applied to various measurement environments. For example, when the actual distance between the subject and the display module 11 is 3 meters or 1 meter, the size ratios of the optotypes displayed on the display module 11 by the same detection line are different.

In some examples, the host device 10 may also include an input module (not shown) for entering historical vision testing information for the subject. The host device 10 may determine an initial test row based on the historical vision test information and the actual distance. The initial detection line may be a detection line in which the optotype displayed by the display module 11 for the first time is located. This can reduce the time required for visual acuity test.

In some examples, host device 10 may also have a voice prompt module (not shown). In some examples, a voice prompt module may be used to direct the subject to autonomously perform the detection. In some examples, a voice prompt module may be used to inform the subject of the vision test results. Therefore, the examinee can conveniently and autonomously perform detection or obtain vision detection results.

In some examples, the host device 10 may also generate a report of the detection of the subject's vision. Thereby, a test report of the eyesight of the subject can be obtained. The vision test report may include the vision of the subject's left or right eye. The disclosure is not limited thereto, and the vision test report may further include test result analysis, daily eye protection advice, and the like.

In some examples, host device 10 may also include a bearer module. The bearing module may be used to make the display module 11 form a preset included angle with the horizontal plane. Thus, the examinee can observe the optotype in the display module conveniently.

In some examples, the carrier module may be a base B. The display module 11 may be a display screen a (see fig. 4). The base B may be used to support the display screen a. The base B can enable the display screen A to form a preset included angle with the horizontal plane.

Fig. 6 is a block diagram of a remote control device 20 illustrating an example of the present disclosure. Fig. 7 is a schematic configuration diagram of the remote control device 20 showing the example of the present disclosure.

In some examples, the remote control device 20 may include a wireless transmission module (not shown). The wireless transmission module may transmit the signal generated by the remote control device 20 to the host device 10 in a wireless manner. The signal generated by the remote control device 20 may include, but is not limited to, a direction indication signal

In some examples, as shown in fig. 6 or 7, the remote control device 20 may have a power button 21. The power button 21 may be used to control power on, standby, or power off of the host device 10.

In some examples, as shown in fig. 6 or 7, the remote control device 20 may have an indication button 22. During vision testing, the indicator button 22 can generate four directional indicator signals. The four direction indication signals respectively represent the opening directions of the visual target of 'up, down, left and right'. Thereby, different direction instruction signals can be issued to the host apparatus 10 through the remote control apparatus 20. The indication button 22 may include four sub-buttons corresponding to "up, down, left, and right". As shown in FIG. 7, ". tangle-solidup" represents "up". A "xxx" represents "lower".

Represents "left".

Represents "right". The four sub-buttons are integrated on one ring.

In some examples, as shown in fig. 7, the remote control device 20 may also include a menu button 23. The vision test function can be selected for vision test through the menu button 23. In some examples, different types of eye charts may also be selected via menu button 23. In some examples, whether to generate a test report of the subject's vision may also be selected through the menu button 23.

In some examples, as shown in fig. 7, the remote control device 20 may also include a confirmation button 24. The OK button 24 may be denoted by "OK". The subject can enter the corresponding interface through the confirmation button 24. Thereby, the subject can be facilitated to perform the selected interface.

In some examples, as shown in fig. 7, the remote control device 20 may also include a back button 25. The back button 25 may be used to push the current interface out into the previous level interface. Thereby, it is possible to facilitate the subject to change the selection.

In the present disclosure, the examinee can perform vision test using the host device 10 and the remote control device 20 to obtain the vision of the left eye or the right eye, whereby autonomous test can be realized, avoiding waiting in line for the tester to perform test. In addition, by monitoring the up-regulation or down-regulation operation of a plurality of detection lines, if the up-regulation operation and the down-regulation operation are alternately carried out for a preset number of times and continuous down-regulation operation or continuous up-regulation operation is not monitored, detecting the eyesight of the left eye or the right eye of the subject by the detection behavior of the down-regulation operation, if the continuous down-regulation operation or the continuous up-regulation operation is monitored and the up-regulation operation and the down-regulation operation are alternately carried out for the preset times, the host device 10 obtains a detection time curve with the abscissa of the detection row of the eye chart and the ordinate of the total detection time based on the respective detection rows and the total detection time of each row, the detection time curve is derived to obtain the slope of each detection line, then the maximum slope with the maximum absolute value is determined, and the vision of the left eye or the right eye of the examinee is obtained based on the maximum slope, so that the vision of the examinee with higher detection accuracy can be obtained.

The present disclosure also relates to a vision testing method, which can be applied to the vision testing system 1.

Fig. 8 is a flow chart illustrating an example vision testing method to which the present disclosure relates.

In some examples, as shown in fig. 8, the vision inspection method may include transmitting a direction indication signal to a host device (step S100), counting the number of times the subject is correct based on the direction indication signal (step S200), performing an up-or-down operation based on the number of times that is correct (step S300), and determining the vision of the subject (step S400).

In step S100, the remote control device 20 may transmit a direction indication signal to the host device 10 by wireless based on the single optotype of the eye chart displayed by the host device 10. Specific contents can be referred to the related description in the vision inspection system 1 described above.

In some examples, in step S100, the host device 10 may also be configured to determine an actual distance of the subject to the display module 11, and adjust a size ratio of the optotypes displayed in the display module 11 based on the actual distance. This can be applied to various measurement environments. Specific contents can be referred to the related description in the vision inspection system 1 described above.

In step S200, the correct times may include a first correct time, a second correct time, and a third correct time. The host device 10 may receive the direction indication signal, and if the optotypes in the same row are continuously displayed, the host device 10 may count a first correct number of times that the examinees are continuously correct, a second correct number of times within a preset time, a third correct number of times of the detection row, and a total detection time of the detection row based on the direction indication signal and the actual directions of the displayed optotypes. Specific contents can be referred to the related description in the vision inspection system 1 described above.

In step S300, the host device 10 may determine whether a first condition, a second condition, and a third condition are satisfied, perform a line down operation based on the current line if any one of the first condition, the second condition, and the third condition is satisfied, perform a line up operation based on the current line if none of the first condition, the second condition, and the third condition is satisfied, where the first condition is that the first correct number is greater than a first threshold, the second condition is that the second correct number is greater than a second threshold, the third condition is that the third correct number is greater than a third threshold, and the third threshold is greater than the second threshold, and each line has the corresponding first threshold, the second threshold, and the third threshold. Specific contents can be referred to the related description in the vision inspection system 1 described above.

In some examples, in step S300, the first threshold, the second threshold, and the third threshold of each detection row are adjusted based on a time interval between two adjacent directional indicator signals of the same row, and if the time interval between two adjacent directional indicator signals of the same row is longer, the first threshold, the second threshold, and the third threshold of the row are larger. This can further improve the detection accuracy. Specific contents can be referred to the related description in the vision inspection system 1 described above.

In step S400, the host device 10 may monitor up-down operations or down-down operations of a plurality of detection lines, obtain a detection time curve having horizontal coordinates of the detection lines of the visual chart and vertical coordinates of the total detection time based on the total detection time of each detection line and each line if the continuous down-down operation or the continuous up-down operation is monitored and the up-down operation and the down-down operation are monitored for a first preset number of times alternately, derive the detection time curve to obtain a slope of each detection line, further determine a maximum slope with a maximum absolute value, obtain the eyesight of the left eye or the right eye of the subject based on the maximum slope, and obtain the eyesight of the left eye or the right eye of the subject of the detection line performing the down-down operation if the continuous down-down operation or the continuous up-up operation is not monitored and the up-down operation and the down-down operation are monitored for a second preset number of times alternately. From this, can realize autonomic detection, avoid waiting in line the measurement personnel and detect, and obtain the person's of being examined eyesight that has higher detection accuracy. Specific contents can be referred to the related description in the vision inspection system 1 described above.

While the present disclosure has been described in detail in connection with the drawings and examples, it should be understood that the above description is not intended to limit the disclosure in any way. Those skilled in the art can make modifications and variations to the present disclosure as needed without departing from the true spirit and scope of the disclosure, which fall within the scope of the disclosure.

Claims (10)

1. A vision detection system is characterized by comprising a host device and a remote control device, wherein the host device comprises a display module for displaying a single visual target in a visual chart, the host device receives a direction indicating signal sent by a subject by using the remote control device in a wireless mode, if the display module continuously displays the visual target on the same line, the host device counts a first correct continuous time, a second correct continuous time, a third correct continuous time and a total detection time of the detection line of the subject based on the direction indicating signal and the actual direction of the visual target displayed by the display module, and determines whether a first condition, a second condition and a third condition are met, the first correct time is larger than a first threshold value, the second correct time is larger than a second threshold value, the third condition is that the third correct time is greater than a third threshold, the third threshold is greater than the second threshold, each line has a corresponding first threshold, a second threshold and a third threshold, if any one of the first condition, the second condition and the third condition is satisfied, the host device performs a line down adjustment operation based on the current line, if none of the first condition, the second condition and the third condition is satisfied, the host device performs a line up adjustment operation based on the current line, the host device monitors an up adjustment or a down adjustment operation of a plurality of detection lines, if a continuous down adjustment operation or a continuous up adjustment operation is monitored and a first preset number of times of alternating the up adjustment operation and the down adjustment operation is monitored, the host device obtains a detection time curve with the horizontal coordinate and the total detection time of the detection line of the visual chart as a vertical coordinate based on the total detection time of each detection line and each line, and if continuous down-regulation operation or continuous up-regulation operation is not monitored and the up-regulation operation and the down-regulation operation are monitored to be alternately carried out for a second preset time, the vision of the left eye or the right eye of the examinee is detected by the down-regulation operation, and the direction indicating signal is wirelessly transmitted to the host equipment by the remote control equipment.

2. The vision testing system of claim 1,

the first threshold, the second threshold and the third threshold of each detection row are adjusted based on the time interval of two adjacent direction indicating signals of the same row, and the first threshold, the second threshold and the third threshold of the row are larger if the time interval of two adjacent direction indicating signals of the same row is longer.

3. The vision testing system of claim 1,

the host equipment further comprises an infrared ranging module, wherein the infrared ranging module is used for determining the actual distance from the detected person to the display module and adjusting the size proportion of the sighting target displayed in the display module based on the actual distance.

4. A vision testing system as recited in claim 3,

the host device further comprises an input module for inputting historical vision detection information of the examinee, the host device determines an initial detection line based on the historical vision detection information and the actual distance, and the initial detection line is a detection line where the sighting target displayed by the display module for the first time is located.

5. The vision testing system of claim 1,

the host device stores at least one type of visual acuity chart, and the display module displays the corresponding type of visual acuity chart based on selection of a subject.

6. The vision testing system of claim 1,

the host device also generates a report of the detection of the subject's vision.

7. The vision testing system of claim 1,

the remote control device is provided with a power button for controlling the startup, standby or shutdown of the host device, and the remote control device is provided with an indication button which generates four direction indication signals respectively representing the directions of the openings of the visual targets of 'up, down, left and right'.

8. A vision testing method applied to the vision testing system according to any one of claims 1 to 7, comprising: based on a single visual target of the visual chart displayed by the host equipment, the remote control equipment sends a direction indicating signal to the host equipment in a wireless mode; the host equipment receives the direction indicating signal, and when the sighting marks in the same line are continuously displayed, the host equipment counts the continuous correct first correct times of the examinee, the second correct times in the preset time, the third correct times of the detection line and the total detection time of the detection line on the basis of the direction indicating signal and the actual direction of the displayed sighting marks; the host device determines whether a first condition, a second condition and a third condition are met, if any one of the first condition, the second condition and the third condition is met, a line down operation is performed based on a current line, if none of the first condition, the second condition and the third condition is met, a line up operation is performed based on the current line, the first condition is that the first correct times are greater than a first threshold value, the second condition is that the second correct times are greater than a second threshold value, the third condition is that the third correct times are greater than a third threshold value, the third threshold value is greater than the second threshold value, and each line has a corresponding first threshold value, a corresponding second threshold value and a corresponding third threshold value; and the host device monitors the up-regulation or down-regulation operation of a plurality of detection lines, if the continuous down-regulation operation or the continuous up-regulation operation is monitored and the up-regulation operation and the down-regulation operation are monitored to be alternately carried out for a first preset number of times, a detection time curve taking the horizontal coordinate of the detection behavior of the visual chart and the total detection time as the vertical coordinate is obtained based on the total detection time of each detection line and each line, the detection time curve is derived to obtain the slope of each detection line, then the maximum slope with the maximum absolute value is determined, the vision of the left eye or the right eye of the examinee is obtained based on the maximum slope, and if the continuous down-regulation operation or the continuous up-regulation operation is not monitored and the up-regulation operation and the down-regulation operation are monitored to be alternately carried out for a second preset number of times, the vision of the left eye or the right eye of the examinee.

9. The vision testing method of claim 8,

the first threshold, the second threshold and the third threshold of each detection row are adjusted based on the time interval of two adjacent direction indicating signals of the same row, and the first threshold, the second threshold and the third threshold of the row are larger if the time interval of two adjacent direction indicating signals of the same row is longer.

10. The vision testing method of claim 8,

the host device is further used for determining the actual distance from the subject to the display module and adjusting the size proportion of the optotypes displayed in the display module based on the actual distance.

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