Method and system for simultaneously measuring eyesight of two eyes

Abstract

The invention relates to a method and system for simultaneously measuring eyesight of two eyes, and the method comprises the steps: initializing a polarized light display device, and displaying sighting marks in different polarization directions according to the initialized polarized light display device; performing vision coarse screening based on the sighting marks, determining the current sighting mark series, and performing fine vision detection according to the current sighting mark series to obtain a vision detection result. Manual intervention is not needed, the eyesight of the two eyes can be measured at the same time, the manpower cost of distant vision detection can be reduced, and meanwhile the distant vision detection efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vision detection, and in particular to a method and system for simultaneously measuring binocular vision. Background Art

[0002] Distant vision testing is an important method for evaluating vision status, among which the standard logarithmic vision chart is the most widely used in my country. In the traditional process of using a vision chart to test distant vision, the doctor or examiner instructs the examinee to cover one eye, and then identify the letters or graphics on the vision chart line by line from top to bottom until they can no longer see clearly. Then, repeat the above steps to test the other eye. We found that this process requires special personnel to operate, and both eyes need to be tested separately, which is relatively inefficient.

[0003] The existing methods for detecting far vision without the participation of the examiner mainly use a vision chart that can interact with the examinee and automatically switch sight marks and automatically judge the examinee's vision according to the examinee's feedback to achieve automatic detection of far vision. The specific operation steps can be summarized as follows: 1. Identify the identity of the examinee; 2. The sight mark appears on the vision chart, and the examinee is prompted by voice to cover one eye (usually cover the left eye first), and then instruct the examinee to give the answer through the remote control or voice interaction; 3. The vision chart automatically switches the sight mark according to the answer given by the examinee until the conditions for automatically judging the examinee's vision are met; 4. The vision chart records and saves the vision data of the eye, and prompts the examinee to cover the other eye, and repeats steps 2 and 3; 5. The far vision test is completed and the examinee's vision is stored. The above method has the following problems: 1. It cannot identify which eye of the examinee is currently being tested; 2. It cannot avoid the cheating behavior that the examinee may use the good eye or both eyes instead of the bad eye.

[0004] Therefore, there is an urgent need to propose a method and system for simultaneously measuring binocular vision without the need for human intervention, which can reduce the labor cost of far vision detection and significantly improve the efficiency of far vision detection. Summary of the invention

[0005] The purpose of the present invention is to propose a method and system for simultaneously measuring binocular vision, so that the left eye can only see the left eye target sight mark and the right eye sight mark is completely blocked; and the right eye can only see the right eye target sight mark and the left eye sight mark is completely blocked; thereby the far vision of both eyes can be measured simultaneously, which solves the problem of not being able to identify which eye of the subject is currently being tested and the problem of not being able to avoid the cheating behavior of the subject using the good eye or both eyes instead of the bad eye, and at the same time improves the efficiency of far vision detection.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A method for measuring binocular visual acuity simultaneously, comprising:

[0008] Initializing the polarized light display device, and displaying sight marks with different polarization directions according to the initialized polarized light display device;

[0009] A rough vision screening is performed based on the sight mark to determine the current sight mark level, and a detailed vision test is performed according to the current sight mark level to obtain a vision test result.

[0010] Optionally, the process of initializing the polarized light display device includes:

[0011] Verify the identity of the examinee, record the examinee's basic information, and generate a unique test record number;

[0012] The detection posture of the subject is identified, and when the detection posture of the subject is wrong, the sitting posture and head position of the subject are adjusted through voice and text prompts.

[0013] Optionally, initializing the polarized light display device includes:

[0014] The maximum visual mark of the polarized light display device is displayed to prompt the subject to answer and verify whether the polarized light display device is in a normal state. If the polarized light display device is in a normal state, the initial response speed of the subject is obtained and the initial response speed is used as the speed of switching the visual mark.

[0015] Optionally, the sight signs include: standard sight signs, letter sight charts and graphic sight charts.

[0016] Optionally, determining the current sight mark level includes:

[0017] Use the letter eye chart or the graphic eye chart to set the first level of sight marks according to the average strength of the examinee's age group or his or her own historical data, display the first level of sight marks to the examinee for a rough vision screening, and judge whether the examinee's answer is correct. If not, use the first level as the current level for a refined vision test. If correct, judge whether the first level is the first maximum level. If so, use the first level as the current level for a refined vision test. If not, increase the sight mark level and continue to perform a rough vision screening until the examinee's answer is incorrect or the increased sight mark level is the first maximum level, then use the increased sight mark level as the current level for a refined vision test.

[0018] Optionally, obtaining the vision test result includes:

[0019] Set a correct answer threshold and an incorrect answer threshold, obtain the number of correct answers and incorrect answers of the examinee, if the number of correct answers is greater than the correct answer threshold, determine whether the current visual mark level is the second maximum level, and obtain the first vision test result based on the judgment result; if the number of incorrect answers is greater than the number of incorrect answers, determine whether the current visual mark level is the minimum level, and obtain the second vision test result based on the judgment result.

[0020] Optionally, obtaining the first vision test result includes:

[0021] Determine whether the current sight mark level is the second maximum level. If so, the subject's vision is greater than the second maximum level. If not, increase the sight mark level and continue testing until the subject's answer is incorrect. The subject's vision is obtained as the previous level vision.

[0022] Optionally, obtaining the second vision detection result includes:

[0023] Determine whether the current sight mark level is the minimum level. If so, the subject's vision is less than the minimum level. If not, reduce the sight mark level and continue testing until the subject's answer is incorrect. The subject's vision is obtained as the current level vision.

[0024] To achieve the above object, the present invention also provides a system for simultaneously measuring binocular vision, comprising:

[0025] The human-computer interaction module is used to verify the identity of the examinee, record the examinee's basic information, generate a unique test record number, notify the examinee that the test is complete, and display the vision test results;

[0026] A polarized display module, used to simultaneously display visual marks with different polarization directions corresponding to the left eye and the right eye respectively;

[0027] A polarization observation module, used for the subject to observe the sight mark on the polarization display module;

[0028] An algorithm program module, used to initialize the polarized light display module, perform a rough vision screening based on the visual mark displayed by the initialized polarized light display module, determine the current visual mark level, perform a fine vision test based on the current visual mark level, and obtain the visual mark test result;

[0029] Wherein, the human-computer interaction module is connected to the algorithm program module and the polarization display module respectively, the algorithm program module is connected to the polarization display module, and the polarization display module is connected to the polarization observation module.

[0030] The beneficial effects of the present invention are:

[0031] The present invention takes into account that the traditional far vision detection process requires special personnel to operate and needs to detect the conditions of both eyes separately, which is not only time-consuming but also has high labor costs. The present invention uses automated detection without the need for human intervention, thereby greatly reducing labor costs. At the same time, since the vision of both eyes can be measured at the same time, the time consumption caused by separate detection is avoided, and the detection efficiency is significantly improved.

[0032] Traditional methods may not be able to accurately identify which eye is being tested, and there is a risk that the subject may use the good eye or both eyes instead of the bad eye to cheat. The present invention uses polarized light to separate the left and right eye sight marks, ensuring that the left eye can only see the left eye target sight mark and the right eye can only see the right eye target sight mark, thereby accurately identifying and measuring the vision of each eye. This design not only improves the accuracy of the test, but also effectively prevents the occurrence of cheating.

[0033] The present invention adopts an adaptive adjustment algorithm, which can adaptively adjust the switching speed and difficulty of the visual mark according to the real-time performance of the subject, which means that the detection process is more flexible and can better adapt to the vision conditions of different subjects. Through personalized detection methods, the present invention improves the accuracy and reliability of detection.

[0034] From the perspective of the control logic and relationship of the system device, the design of the present invention enables various parts to work together to achieve automated detection, which not only simplifies the operation process but also improves the stability and reliability of the system.

[0035] The present invention significantly reduces the manual operation links through the automated vision detection process, thereby improving the detection efficiency. At the same time, since the simultaneous measurement of both eyes is achieved, the detection time is further shortened and the speed of the overall detection process is improved.

[0036] The present invention adopts a method of using polarized light to separate the left and right eye sight marks, ensuring that each eye can only see the corresponding sight mark, thereby avoiding misjudgment caused by visual confusion; in addition, the adaptive adjustment algorithm can adjust the detection difficulty according to the actual situation of the subject, making the measurement result more accurate and more repeatable.

[0037] The present invention effectively prevents the examinee from cheating by using the good eye or both eyes to replace the bad eye through the application of polarized light technology, thereby ensuring the fairness and authenticity of the test results.

[0038] The present invention improves the stability and reliability of the system, reduces the probability of failure, and ensures the smooth progress of the detection process by optimizing the control logic and relationship of the system devices.

[0039] The present invention breaks through the limitation that traditional far vision detection requires manual operation and separate detection of both eyes, and realizes an innovative method of automated and simultaneous measurement, bringing significant progress to the field of far vision detection.

[0040] The present invention significantly improves the user experience by simplifying the operating process, shortening the detection time, and personalizing the detection difficulty, making far vision detection more convenient and comfortable.

[0041] The present invention can obtain more authentic and reliable vision data by improving detection accuracy and preventing cheating, thus providing strong support for subsequent vision analysis, diagnosis and treatment.

[0042] The successful application of the present invention will promote the further development of farsightedness detection technology and promote technological innovation and industrial upgrading in related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Figure 1 A schematic diagram of a method for simultaneously measuring binocular vision according to an embodiment of the present invention;

[0045] Figure 2 Schematic diagram of a system for simultaneously measuring binocular vision according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] like Figure 1 As shown, the present invention discloses a method for simultaneously measuring binocular vision, including: initializing a polarized display device, displaying sight marks with different polarization directions according to the initialized polarized display device; performing a rough vision screening based on the sight mark, determining the current sight mark level, performing a detailed vision test according to the current sight mark level, and obtaining a vision test result.

[0049] Before initializing the polarized light display device, the following steps are performed: verifying the identity of the examinee, recording the examinee's basic information, and generating a unique test record number; identifying the examinee's test posture, and when the examinee's test posture is wrong, adjusting the examinee's sitting posture and head position through voice and text prompts, specifically:

[0050] Identity verification and registration: The human-computer interaction device registers and / or identifies the subject's personal information through facial recognition, input of the subject's information, reading of the subject's QR code or card, etc. After successful verification, the system automatically records the subject's basic information and generates a unique test record number.

[0051] The preparation of polarized display device includes: the present invention is composed of three parts: polarized display device (including visual mark display and result judgment algorithm program), polarized observation device, and human-computer interaction device. The polarized display device and the polarized observation device are linked to each other to separate the visual marks of the left and right eyes. There are two preparation methods: the first method is to directly paste a polarized film on the left half screen of an ordinary liquid crystal display, and paste a polarized film with a polarization direction perpendicular to the left half screen on the right half screen; the polarization direction of the polarized film of the left and right observation holes on the observation device is consistent with that of the display device, and the parallel transmittance of the polarized film of the observation device and the polarized film of the display device is required to be ≧95%, the orthogonal transmittance ≦5, the overall polarization degree ≧90%, and the transmittance ≧42%. The second method is to directly abandon the polarized film on the surface of the ordinary liquid crystal display, and then follow the steps and requirements of method one to achieve the same effect. Method 2 actually changes the film-sticking process on the front surface of the ordinary LCD screen. Compared with method 1, although method 1 does not need to change the original shape of the ordinary LCD display, because it has added a polarizing film, it causes light loss. In order to meet the brightness standard of the LCD eye chart (80-320cd / m2), the brightness of the entire LCD display is required to be increased to 1.47 times the original.

[0052] Initializing the polarized light display device includes: displaying the maximum visual mark of the polarized light display device, prompting the subject to answer, verifying whether the polarized light display device is in a normal state, and if the polarized light display device is in a normal state, obtaining the subject's initial response speed, and using the initial response speed as the speed of switching the visual mark.

[0053] The sight chart includes: standard sight chart, letter sight chart and graphic sight chart, specifically: the sight chart used in this embodiment is designed in strict accordance with the national mandatory standard (GB11533-2011), and the four core contents of visual angle, standard distance, sight chart increase rate and vision record are completely consistent with the standard. The shape of the sight chart, based on the standard recommendation of using a square "E"-shaped sight chart with three equal strokes, according to the design principle of the sight chart, an letter sight chart composed of ten letters (CDHKNORSVZ) with the same reading difficulty and a graphic sight chart composed of ten graphics with the same reading difficulty are added. Among them, the letter and graphic sight charts are used for initial vision screening, while the "E"-shaped sight chart is used for fine vision testing. The above-mentioned sight chart is used to test monocular vision and finally judge the monocular vision result.

[0054] Determining the current visual acuity level includes: using an alphabetic visual acuity chart or a graphic visual acuity chart, setting a first level of visual acuity according to the average strength of the examinee's age group or his or her own historical data, displaying the first level of visual acuity to the examinee for a rough vision screening, and judging whether the examinee's answer is correct; if not, using the first level as the current level for a refined vision test; if correct, judging whether the first level is the first maximum level; if so, using the first level as the current level for a refined vision test; if not, increasing the visual acuity level and continuing the rough vision screening until the examinee's answer is incorrect or the increased visual acuity level is the first maximum level, and then using the increased visual acuity level as the current level for a refined vision test.

[0055] Obtaining the vision test results includes: setting a correct answer threshold and an incorrect answer threshold, obtaining the number of correct answers and incorrect answers of the examinee, if the number of correct answers is greater than the correct answer threshold, then determining whether the current visual mark level is the second maximum level, and obtaining the first vision test result based on the determination result; if the number of incorrect answers is greater than the number of incorrect answers, then determining whether the current visual mark level is the minimum level, and obtaining the second test result based on the determination result.

[0056] Obtaining the first vision test result includes: determining whether the current sight mark level is the second maximum level. If so, the subject's vision is greater than the second maximum level. If not, increasing the sight mark level and continuing the test until the subject's answer is incorrect. The subject's vision is obtained as the previous level vision.

[0057] Obtaining the second vision test result includes: determining whether the current sight mark level is the minimum level, if so, the subject's vision is less than the minimum level, if not, reducing the sight mark level, and continuing the test until the subject's answer is incorrect, and obtaining the subject's vision is the current level vision, specifically:

[0058] Preparation for vision test: The human-computer interaction device prompts the examinee to adjust his / her sitting posture and keep his / her head close to the observation device through voice and text to ensure the correct test posture. The polarized display device is initialized and is ready to display the sight marks for the left and right eyes at the same time.

[0059] Initialization: The device displays the largest sight mark, prompts the subject to give an answer, verifies whether the device status is normal, identifies whether the subject understands the test process, and obtains the subject's initial response speed. This speed will be used as the speed for the algorithm program to automatically switch the sight mark when the subject does not move.

[0060] Vision testing process: The polarized display device displays two sight marks at the same time, one for the left eye and one for the right eye. Each sight mark has a unique polarization direction, so that the left eye can only see the left eye sight mark, and the right eye can only see the right eye sight mark. The human-computer interaction device prompts the subject to start the test through voice and text, and requires the subject to use the keyboard or voice to select the same sight mark as the display device. The subject gives the answer through the keyboard or voice, and the algorithm program automatically switches the sight mark according to the subject's answer, gradually reducing the size of the sight mark or increasing the difficulty until the conditions for automatically judging the subject's vision are met. During the test process, the system can provide real-time feedback on the subject's answer, such as through voice prompts of "correct" or "wrong", so that the subject can adjust his or her judgment, specifically:

[0061] Rough vision screening: Use an alphabetic or graphic vision chart, set the initial level of sight marks according to the average vision of the examinee's age group or his / her own historical data, and display it to the examinee, waiting for his / her response. The algorithm program makes the following actions according to the examinee's response; if the examinee answers correctly, the program determines whether the current sight mark is the maximum level. If not, increase the level (the sight mark becomes smaller) and continue the rough vision screening. If so, start the detailed vision test from the maximum level; if the examinee answers incorrectly, start the detailed vision test from the current level.

[0062] Fine vision test: This stage uses an "E"-shaped sight mark. The rough vision screening stage determines the sight mark level at the beginning of the test. The examiner presets the pass and fail standards for each level of vision test, and indicates the probability of vision error caused by the examinee's guessing to pass the standard under the current settings. For example: Set the standard for vision passing at the current level as follows: the examinee passes if he or she answers N (N≧1) questions correctly, and fails if he or she answers K (K≧1) questions incorrectly. At this time, the error probability caused by the examinee's guessing to pass the standard is:

[0063] C(N+K-1,N)×(1 / 4) N ×(3 / 4) (K-1)

[0064] Among them, C represents the combination, N represents the number of correct visual symbols when the current level preset by the examiner is passed, and K represents the number of incorrect visual symbols when the current level preset by the examiner is not passed.

[0065] The algorithm program performs the following actions according to the response of the examinee: if the initial level test passes, the program determines whether the current level is the maximum level. If so, the vision result is determined to be: vision is greater than the maximum level, and the test is completed; if the current level is not the maximum level, the sight mark level is increased to continue the test, and the cycle is repeated until the current level is not passed. The program determines the vision result to be: vision at the previous level, and the test is completed; if the initial level test fails, the program determines whether the current level is the minimum level. If so, the vision result is determined to be: vision is less than the minimum level, and the test is completed; if the current level is not the minimum level, the sight mark level is reduced to continue the test, and the cycle is repeated until the current level is passed. The program determines the vision result to be: vision at the current level, and the test is completed.

[0066] The maximum visual acuity level supported by the system is: 5.3 (2.0); the minimum visual acuity level supported by the system is: 3.5 (0.03)

[0067] Recording and saving of vision results: When the conditions for automatically judging the vision of the examinee are met, the system records and saves the vision results of both eyes. The human-computer interaction device prompts the examinee through voice and text that the test is complete, and displays or prints the vision result report.

[0068] Data management and analysis: The system stores the subject's vision data in the database and can perform subsequent data management and analysis, such as generating vision change curves and statistically analyzing vision distribution.

[0069] like Figure 2 As shown, the present invention discloses a system for simultaneously measuring binocular vision, including: a human-computer interaction module, used to verify the identity of the examinee, record the basic information of the examinee, generate a unique test record number, and notify the examinee that the test is completed, and display the vision test result; a polarization display module, used to simultaneously display visual marks with different polarization directions corresponding to the left eye and the right eye respectively; a polarization observation module, used for the examinee to observe the visual marks on the polarization display module; an algorithm program module, used to initialize the polarization display module, according to the visual marks displayed by the initialized polarization display module; based on the visual marks, perform a rough vision screening, determine the current visual mark level, perform a fine vision test according to the current visual mark level, and obtain the vision test result; wherein the human-computer interaction module is respectively connected to the algorithm program module and the polarization display module, the algorithm program module is connected to the polarization display module, and the polarization display module is connected to the polarization observation module.

[0070] Logical implementation of simultaneous measurement of binocular vision:

[0071] Adaptive adjustment: Based on the average vision of the subject's age group or their own historical data and real-time performance, the algorithm can adaptively adjust the speed of visual mark switching and the rate of increasing difficulty when testing monocular vision.

[0072] Parallel processing: The algorithm uses parallel processing to process the visual mark switching and judgment logic of the left and right eyes at the same time, ensuring that the detection process of the left and right eyes is carried out synchronously, thereby achieving simultaneous measurement.

[0073] Independent sight mark sequence: Independent sight mark sequences are designed for the left eye and the right eye to ensure that they do not interfere with each other. Each sight mark sequence is adaptively adjusted according to the subject's vision to meet the needs of simultaneous measurement.

[0074] Real-time feedback and synchronous recording: During the test, the algorithm program records the visual acuity data of the left and right eyes in real time, and saves it synchronously after the test is completed. At the same time, real-time feedback is provided through the human-computer interaction device to let the examinee understand the current test progress and results.

[0075] Control logic and relationship of system devices:

[0076] Control logic: The human-computer interaction device is responsible for interacting with the user, receiving the user's input instructions, and controlling the display content of the polarized display device. The algorithm program controls the switching of the visual mark and the adjustment of the difficulty according to the examinee's answer and the vision test logic. The system as a whole follows the preset vision test process and rules to ensure the accuracy and reliability of the test process.

[0077] Hardware relationship: The human-computer interaction device (such as touch screen, keyboard, microphone, etc.) is connected to the polarized light display device through Bluetooth or wireless network to realize data transmission and control command transmission. The algorithm program runs on the central processor of the system to process and analyze the received data and control the display content of the polarized light display device. The database server is responsible for storing and managing vision test data and providing support for data management and analysis.

[0078] Software relationship: Human-computer interaction software is responsible for the interaction logic with the user interface, including displaying prompt information, receiving user input, etc. Vision testing software contains the core logic of the algorithm program, which is responsible for controlling the switching of visual marks, adjusting the difficulty, and judging the vision results. Data management software is responsible for data storage, query and analysis functions, and provides support for data management and report generation.

[0079] The present invention adopts different vision charts to divide the vision detection process into two parts: coarse screening and fine detection, thereby improving the efficiency and accuracy of vision detection. The present invention realizes the simultaneous measurement of binocular vision through specific technical means. The present invention uses polarized light to separate the left and right eye sight marks, which ensures that the left eye can only see the left eye target sight mark and the right eye can only see the right eye target sight mark, thereby effectively avoiding cheating and improving the accuracy of detection. The algorithm program in the present invention can adaptively adjust the switching speed and difficulty of the sight mark according to the performance of the subject.

[0080] The embodiments described above are only descriptions of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for simultaneously measuring binocular vision, characterized in that: include: Initializing the polarized light display device, and displaying sight marks with different polarization directions according to the initialized polarized light display device; A rough vision screening is performed based on the sight mark to determine the current sight mark level, and a detailed vision test is performed according to the current sight mark level to obtain a vision test result.

2. The method for simultaneously measuring binocular vision according to claim 1, characterized in that: Before initializing the polarized light display device, the following steps are included: Verify the identity of the examinee, record the examinee's basic information, and generate a unique test record number; The detection posture of the subject is identified, and when the detection posture of the subject is wrong, the sitting posture and head position of the subject are adjusted through voice and text prompts.

3. The method for simultaneously measuring binocular vision according to claim 1, characterized in that: Initializing the polarized light display device includes: The maximum visual mark of the polarized light display device is displayed to prompt the subject to answer and verify whether the polarized light display device is in a normal state. If the polarized light display device is in a normal state, the initial response speed of the subject is obtained and the initial response speed is used as the speed of switching the visual mark.

4. The method for simultaneously measuring binocular vision according to claim 1, characterized in that: The sight chart includes: standard sight chart, letter sight chart and graphic sight chart.

5. The method for simultaneously measuring binocular vision according to claim 4, characterized in that: Determining the current sight mark level includes: Use the letter eye chart or the graphic eye chart to set the first level of sight marks according to the average strength of the examinee's age group or his or her own historical data, display the first level of sight marks to the examinee for a rough vision screening, and judge whether the examinee's answer is correct. If not, use the first level as the current level for a refined vision test. If correct, judge whether the first level is the first maximum level. If so, use the first level as the current level for a refined vision test. If not, increase the sight mark level and continue to perform a rough vision screening until the examinee's answer is incorrect or the increased sight mark level is the first maximum level, then use the increased sight mark level as the current level for a refined vision test.

6. The method for simultaneously measuring binocular vision according to claim 4, characterized in that: Obtaining the vision test result includes: Set a correct answer threshold and an incorrect answer threshold, obtain the number of correct answers and incorrect answers of the examinee, if the number of correct answers is greater than the correct answer threshold, determine whether the current visual mark level is the second maximum level, and obtain the first vision test result based on the judgment result; if the number of incorrect answers is greater than the number of incorrect answers, determine whether the current visual mark level is the minimum level, and obtain the second vision test result based on the judgment result.

7. The method for simultaneously measuring binocular vision according to claim 6, characterized in that: Obtaining the first vision test result includes: Determine whether the current sight mark level is the second maximum level. If so, the subject's vision is greater than the second maximum level. If not, increase the sight mark level and continue testing until the subject's answer is incorrect. The subject's vision is obtained as the previous level vision.

8. The method for simultaneously measuring binocular vision according to claim 6, characterized in that: Acquiring the second vision test result includes: Determine whether the current sight mark level is the minimum level. If so, the subject's vision is less than the minimum level. If not, reduce the sight mark level and continue testing until the subject's answer is incorrect. The subject's vision is obtained as the current level vision.

9. A system for simultaneously measuring binocular vision, characterized in that: include: The human-computer interaction module is used to verify the identity of the examinee, record the examinee's basic information, generate a unique test record number, notify the examinee that the test is complete, and display the vision test results; A polarized display module, used to simultaneously display visual marks with different polarization directions corresponding to the left eye and the right eye respectively; A polarization observation module, used for the subject to observe the sight mark on the polarization display module; An algorithm program module, used to initialize the polarized light display module, perform a rough vision screening based on the visual mark displayed by the initialized polarized light display module, determine the current visual mark level, perform a fine vision test based on the current visual mark level, and obtain the visual mark test result; Wherein, the human-computer interaction module is connected to the algorithm program module and the polarization display module respectively, the algorithm program module is connected to the polarization display module, and the polarization display module is connected to the polarization observation module.

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