Portable video nystagmus detection ocular lens

Abstract

The application provides a portable video nystagmus detection eyepiece, and relates to the technical field of medical equipment. The portable video nystagmus detection eyepiece comprises a mirror body, an image acquisition assembly and an analysis assembly. The mirror body comprises a mirror frame and a headband, and the headband is connected with the mirror frame to form a ring shape. The image acquisition assembly comprises an eyeball camera and a calibration camera, both of which are arranged on one side of the mirror frame close to the headband. The eyeball camera can acquire a motion video of a to-be-measured eyeball, and the calibration camera can shoot a calibration image containing the eyeball camera and the to-be-measured eyeball. The analysis assembly comprises a control board and a display electrically connected with the control board. The control board and the display are both arranged on the mirror frame. The control board can receive the motion video and the calibration image. The control board can first analyze the calibration image to obtain the distance between the eyeball camera and the to-be-measured eyeball, and then analyze the motion video combined with the distance and send the analysis result to the display. The application can accurately measure the actual distance between the eyeball and the camera, and has the effect of high precision.

Description

A portable video nystagmus detection eyepiece Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a portable video nystagmus detection eyepiece. Background Technology

[0002] The portable video nystagmus detection eyepiece is a medical device mainly used for the clinical detection and diagnosis of ocular symptoms such as nystagmus.

[0003] Existing portable video nystagmus detection devices typically include an eyepiece housing, a built-in image acquisition module, and a headband assembly for fixation. The image acquisition module generally has two cameras, one for capturing video of the patient's eye movements, and transmits the video data to an external processing device for analysis via cable or wireless means.

[0004] However, in actual use, the calibration accuracy of the above-mentioned equipment is easily affected by individual differences in facial anatomy of patients. For example, factors such as eye socket depth and nasal bridge height can change the actual distance between the eyeball and the camera, thus interfering with the accuracy of the calculation of the eyeball movement angle.

[0005] Therefore, there is a need to provide a portable video nystagmus detection eyepiece. Summary of the Invention

[0006] To address the issue that the calibration accuracy of existing portable video nystagmus detection devices is easily affected by individual differences in facial anatomy among patients, thus interfering with the detection accuracy, this application provides a portable video nystagmus detection eyepiece.

[0007] This application provides a portable video nystagmus detection eyepiece, which adopts the following technical solution: it includes an eyepiece body, an image acquisition component, and an analysis component. The eyepiece body includes an eyepiece frame and a headband. One end of the headband is connected to one end of the eyepiece frame, and the other end of the headband is connected to the other end of the eyepiece frame.

[0008] The image acquisition component includes an eye-tracking camera and a calibration camera. Both the eye-tracking camera and the calibration camera are located on the side of the frame near the headband. The eye-tracking camera can capture video of the movement of the eyeball under test, and the calibration camera can capture a calibration image containing the eye-tracking camera and the eyeball under test.

[0009] The analysis component includes a control board and a display electrically connected to the control board. Both the control board and the display are mounted on the eyeglass frame. The control board is electrically connected to the image acquisition component and can receive the motion video and the calibration image. The control board can first analyze the calibration image to obtain the distance between the eye-camera and the eyeball to be tested, and then combine the distance to analyze the motion video and send the analysis result to the display.

[0010] By adopting the above technical solution, on the one hand, this portable video nystagmus detection eyepiece integrates image acquisition, analysis, and display components on the frame using an eyeball camera. It can perform detection independently without the need for a computer, monitor, or other equipment, making it convenient for users to carry and visit patients in various locations. On the other hand, this portable video nystagmus detection eyepiece uses an eyeball camera to acquire video of the eyeball under test, and a calibration camera captures a calibration image containing both the eyeball camera and the eyeball under test. The control board analyzes the calibration image to obtain the distance between the eyeball camera and the eyeball under test, and then combines this distance with the analysis of the motion video and sends the result to the display. Compared with existing technologies where calibration accuracy is easily affected by individual facial anatomy differences in patients, leading to interference with the accuracy of eyeball motion angle calculation, this eyepiece can accurately measure the actual distance between the eyeball and the camera, dynamically adjust the calibration parameters based on the measured distance, eliminate calibration errors caused by individual anatomical differences such as orbital depth and nasal bridge height, and significantly improve the accuracy of eyeball motion angle calculation.

[0011] Specifically, the control board includes a calibration module, which has a built-in chart with a ruler containing the eye-camera, and is configured to overlay the chart and the calibration image and read the distance between the eye-camera and the eyeball to be tested.

[0012] By adopting the above technical solution, the calibration module has a built-in chart with a ruler. After superimposing the chart and the calibration image, the distance between the eye-camera and the eyeball to be measured can be read. The calibration parameters can be dynamically adjusted according to the measured distance to eliminate calibration errors caused by individual anatomical differences such as orbital depth and nasal bridge height, and improve the accuracy of eye movement angle calculation.

[0013] Furthermore, the control board also includes a video editing module and an analysis module. The image acquisition component includes two eye-cameras, each corresponding to one of the wearer's eyes. The video editing module can stitch and crop the motion videos captured by the two eye-cameras and send the finished video to the analysis module. The analysis module is electrically connected to the display and can analyze the finished video, and the analysis module can send the analysis results to the display.

[0014] By adopting the above technical solution, the video editing module can stitch and trim the motion videos captured by the two eye cameras to obtain the finished video, which facilitates subsequent analysis and processing and improves the integrity and standardization of video data. The analysis module analyzes the finished video and sends the results to the display, enabling doctors to intuitively obtain the analysis results, providing accurate basis for diagnosis, and improving diagnostic efficiency and accuracy.

[0015] Furthermore, the control board also includes a wired output module and a wireless output module. Both the wired output module and the wireless output module are electrically connected to the analysis module. The wired output module can be electrically connected to the receiving device via a data cable and send the analysis results to the receiving device. The wireless output module can be wirelessly connected to the receiving device and send the analysis results to the receiving device.

[0016] By adopting the above technical solution, the control board is equipped with a wired output module and a wireless output module, both of which are electrically connected to the analysis module. This allows the analysis results to be transmitted to the receiving device via either the wired output module through a data cable or via the wireless output module through a radio wave. This provides multiple options for the transmission of analysis results, enhances the flexibility and convenience of data transmission between the device and the receiving device, and better adapts to different usage scenarios and the connection requirements of the receiving device.

[0017] Furthermore, the control board also includes a nine-axis inertial measurement unit, which is capable of measuring the wearer's head motion data in six degrees of freedom. The nine-axis inertial measurement unit is electrically connected to the analysis module and can send the motion data to the analysis module.

[0018] By adopting the above technical solution, the nine-axis inertial measurement unit can measure the wearer's head motion data in six degrees of freedom and send the data to the analysis module, realizing the synchronous recording of head motion information. Combined with the analysis of motion video by the analysis module, 3D animation can be dynamically displayed to simulate body position changes based on motion data during video playback, perfectly restoring the details of body position changes during examinations such as RollTest, and solving the technical problem that traditional portable devices cannot integrate scene cameras due to size limitations.

[0019] Specifically, it also includes a target, which includes an indicator light located on the side of the frame near the headband and electrically connected to the control board.

[0020] By adopting the above technical solution, the indicator light is placed on the side of the frame near the headband and electrically connected to the control board. The control board can precisely control the lighting and extinguishing of the indicator light. Patients can complete fixation suppression and other tests and calibrations by directly looking at the lit light inside the eyepiece, realizing automated control of the examination process. Moreover, this process is strictly synchronized with eye movement video acquisition, which improves the accuracy and efficiency of testing and calibration.

[0021] Specifically, the lens body also includes a buffer ring, which is located on the side of the frame near the headband. The image acquisition component is located inside the buffer ring. The buffer ring includes an eye socket section and a nose pad section. The eye socket section is adapted to the wearer's eye socket, and the nose pad section is adapted to the wearer's nose. The thickness of the nose pad section is different from the thickness of the eye socket section.

[0022] By adopting the above technical solution, the eye socket section of the buffer ring is adapted to the wearer's eye socket, and the nose pad section is adapted to the wearer's nose. Moreover, the nose pad section and the eye socket section have different thicknesses, which can better fit the wearer's facial contours, effectively block ambient light, and improve wearing comfort.

[0023] Furthermore, it also includes an infrared fill light, which is located on the side of the frame near the headband and inside the buffer ring. When the buffer ring is in contact with the wearer's face and forms a dark chamber inside the buffer ring, the infrared fill light can fill the dark chamber.

[0024] By adopting the above technical solution, the infrared fill light is set on the side of the frame near the headband and inside the buffer ring. When the buffer ring fits against the wearer's face to form a dark chamber, the infrared fill light can fill the dark chamber with light, which can ensure that high-definition eye movement video is obtained in the dark chamber environment and improve the accuracy of detection.

[0025] Specifically, the headband includes an elastic band and two bent tubes, each of which is sleeved on the elastic band. Inside each bent tube, a near-eye segment, a bent segment, and a far-eye segment are sequentially formed along the direction from near to far from the lens body. The dimension of the bent segment in the height direction of the lens body is smaller than the dimensions of the near-eye segment and the far-eye segment in the height direction of the lens body. Each bent segment corresponds to one of the wearer's ears. When the lens body is worn, each bent segment is located on the corresponding ear root and between the corresponding outer ear and scalp.

[0026] By adopting the above technical solution, the elastic band of the headband can provide a certain degree of elasticity, ensuring wearing comfort and equipment stability during the examination process. The bending tube is sleeved on the elastic band, and the near eye section, bending section and far eye section are formed inside the bending tube. The bending section is smaller than the near eye section and the far eye section, and the bending section corresponds to the wearer's ears one by one. When wearing the glasses, the bending section is located on the ear root and between the outer ear and the scalp. This design prevents the headband from wrapping around or compressing the wearer's outer ear, further improving the stability and comfort of wearing, and thus facilitating wearing for a longer period of time.

[0027] Furthermore, the headband also includes a mounting base, a drive gear, a handwheel, two connecting blocks, two transmission racks, and two limiting belts. The mounting base has an internal receiving cavity. The drive gear is rotatably connected to the cavity wall of the receiving cavity. The handwheel's rotating shaft passes through a through hole on the side of the mounting base away from the frame and extends into the receiving cavity, and is connected to the drive gear on the same rotating shaft. Each connecting block corresponds to a bent tube, and each connecting block is connected to the outer wall of the corresponding bent tube. Two connecting blocks are symmetrically arranged with the mounting base as the center. The transmission racks and the limiting belts are all connected to the... The connecting blocks are one-to-one. One end of each transmission rack is connected to the corresponding connecting block. The other end of each transmission rack passes through the opening on the mounting base and extends into the receiving cavity, meshing with the drive gear. The tooth surfaces of the two transmission racks are arranged opposite each other with the drive gear as the center. Each connecting block has a limiting groove on the side near the mounting base along the circumferential direction of the headband. One end of each limiting band is inserted into the corresponding limiting groove and abuts against the groove wall. The other end of each limiting band is connected to the mounting base, and each limiting band can slide along the limiting groove.

[0028] By adopting the above technical solution, the headband is equipped with a mounting base, a drive gear, a handwheel, a connecting block, a transmission rack, and a limiting belt. Turning the handwheel drives the drive gear to rotate, and the drive gear meshes with the transmission rack, causing the transmission rack to move the connecting block, thereby adjusting the position of the bent tube to accommodate the outer ears of different wearers. At the same time, the limiting belt is inserted into the limiting groove of the connecting block, which plays a limiting role during the adjustment process, ensuring the stability and accuracy of the headband adjustment, and ensuring the stability of the equipment during the inspection process.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. This portable video nystagmus detection eyepiece integrates an image acquisition component, an analysis component, and a display on the frame using an eyeball camera. It can perform detection independently without the need for a computer, monitor, or other equipment. This makes it convenient for users to carry this portable video nystagmus detection eyepiece and visit patients in various locations.

[0031] 2. By using an eye-tracking camera and a calibration camera in conjunction, the control board analyzes the calibration image to obtain the distance between the eye-tracking camera and the eye being tested. Combining this distance with the analysis of motion video can eliminate calibration errors caused by individual facial anatomy differences and improve the accuracy of eye movement angle calculation.

[0032] 3. The nine-axis inertial measurement unit in the control board can measure the motion data of the wearer's head in six degrees of freedom and send it to the analysis module. It can synchronously display the three-dimensional motion trajectory of the head during video playback, solving the problem that traditional portable devices cannot integrate scene cameras.

[0033] 4. The buffer ring of the endoscope includes an orbital segment that fits the eye socket and a nose pad segment that fits the nose. The nose pad segment and the orbital segment have different thicknesses, which can adapt to the face shape of different ethnic groups and improve the sealing of the examination.

[0034] 5. The bend tube is fitted onto the elastic band, and the bend tube forms a near-eye section, a bent section, and a far-eye section inside. The bent section is smaller than the near-eye section and the far-eye section, and the bent section corresponds to the wearer's ears one by one. When wearing the glasses, the bent section is located on the ear root and between the outer ear and the scalp. This design prevents the headband from wrapping around or compressing the wearer's outer ear, further improving the stability and comfort of wearing the glasses, and thus facilitating wearing them for longer periods of time. Attached Figure Description

[0035] Figure 1 is a perspective view of the first embodiment of this application;

[0036] Figure 2 is a right view of the first embodiment of this application, wherein the interface plug and headband are not shown in order to illustrate the wired output module;

[0037] Figure 3 is a schematic cross-sectional view taken along the AA direction in Figure 2;

[0038] Figure 4 is a rear view of the first embodiment of this application;

[0039] Figure 5 is a perspective view of the second embodiment of this application;

[0040] Figure 6 is a right view of the second embodiment of this application;

[0041] Figure 7 is a schematic cross-sectional view taken along the BB direction in Figure 6;

[0042] Figure 8 is a schematic cross-sectional view taken along the CC direction in Figure 6, showing only a portion of the mirror body.

[0043] Reference numerals: 1. Lens body; 11. Frame; 12. Headband; 121. Elastic band; 122. Bending tube; 123. Mounting base; 124. Drive gear; 125. Handwheel; 126. Connecting block; 127. Transmission rack; 128. Limiting band; 129. Fixing ring; 13. Buffer ring; 131. Eye socket section; 132. Nose bridge section; 2. Image acquisition component; 21. Eyeball camera; 22. Calibration camera; 3. Analysis component; 31. Control board; 311. Wired output module; 3111. Interface plug; 32. Display; 4. Indicator light; 5. Infrared fill light. Detailed Implementation

[0044] The following explanation, in conjunction with Figures 1-8, further illustrates the following:

[0045] Referring to Figures 1 and 2, in a first embodiment, a portable video nystagmus detection eyepiece includes a lens body 1, a target, an infrared supplementary light 5, an image acquisition component 2, and an analysis component 3. The lens body 1 includes a frame 11, a buffer ring 13, and a headband 12. The headband 12 includes a fixing ring 129 and multiple elastic bands 121. A notch is formed on the bottom ring of the fixing ring 129. A segment of the elastic band 121 is disposed in the notch and forms an annular retaining ring with the fixing ring 129, which can change its inner diameter under external force. One side of the annular retaining ring is connected to one end of the frame 11 through a segment of the elastic band 121, and the other side of the annular retaining ring is connected to the other end of the frame 11 through a segment of the elastic band 121, so that the headband 12 and the lens body 1 can be securely worn on the user's head, and the annular retaining ring can spontaneously conform to the back of the user's head. The buffer ring 13 is disposed on the side of the frame 11 near the headband 12 (i.e., the side facing the patient's face). The buffer ring 13 includes components that conform to the wearer's face. The eyepiece consists of an orbital segment 131 adapted to the patient's eye socket and a nose pad segment 132 adapted to the nose. Under the pre-tension force provided by the elastic headband 12, patients with high nose bridges will mainly deform the buffer ring 13 of the nose pad segment 132, while patients with high cheekbones will mainly deform the buffer ring 13 of the orbital segment 131. This allows the portable video nystagmus detection eyepiece to adapt to the facial features of different races (such as the high nose bridge and deep eye sockets of Europeans or the relatively flat faces of Asians). Under the pre-tension force of the elastic headband 12, it achieves a full fit, effectively blocking ambient light and creating the dark chamber environment required for detection inside the frame 11. Specifically, the buffer ring 13 can be made of a composite material. The part that comes into direct contact with the skin uses a soft medical-grade PVC rubber ring to provide comfort and initial sealing. The interior of the buffer ring 13 uses a high-hardness ABS material as a support structure to ensure that the buffer ring 13 can produce overall and controllable deformation when tightened by the elastic headband 12, rather than local collapse.

[0046] Referring to Figures 3 and 4, the target, image acquisition component 2, and infrared supplementary light 5 are all located on the side of the frame 11 near the headband 12 and within the buffer ring 13. The target can be configured with three LED indicator lights 4, one located to the left of the left eye, another directly in front of the left eye, and the last one to the right of the right eye. Due to the conjugate movement of the left and right eyes, doctors can control the different indicator lights 4 to indicate to the wearer to look left, right, or straight ahead, thereby completing fixation inhibition tests and calibrations. The image acquisition component 2 includes two ocular cameras 21 and one calibration camera 22. The two ocular cameras 21 correspond one-to-one with the wearer's eyes, and each eye... The camera 21 is configured to capture video of the movement of a single eyeball, and the calibration camera 22 is configured to capture a calibration image containing a specific eyeball camera 21 and the corresponding eyeball (the calibration camera 22 in Figure 4 is located on the left side of the lens body 1 and can capture a calibration image containing the eyeball camera 21 located on the left and the wearer's left eye); the infrared fill lights 5 can be set to eight, with four infrared fill lights 5 arranged around each eyeball camera 21, so that when the buffer ring 13 is in contact with the wearer's face to form a dark chamber, the infrared fill lights 5 can fill the dark chamber with light, which can ensure that high-definition video of eyeball movement is obtained in the dark chamber environment and improve the accuracy of detection.

[0047] Referring to Figures 3 and 4, the analysis component 3 includes a control board 31 and a display 32 electrically connected to the control board 31. The display 32 is located on the side of the frame 11 away from the headband 12. The display 32 can be a touch screen to facilitate user operation of this portable video nystagmus detection eyepiece. The control board 31 includes a video editing module, a calibration module, an analysis module, a nine-axis inertial measurement unit, a wireless output module, and a wired output module 311. The video editing module is electrically connected to two eye-tracking cameras 21 and is capable of transmitting the signals from the two eye-tracking cameras 21 to the camera. The captured motion videos are stitched and cropped, and then the finished video is sent to the analysis module. The calibration module is electrically connected to the calibration camera 22. This calibration module has a built-in chart with a scale that includes the adjacent eye-camera 21 (this chart can be obtained by pre-shooting and calibrating a physical scale placed perpendicular to its optical axis using the calibration camera 22). When the calibration module receives the calibration image captured by the calibration camera 22, it can read the distance between the eye-camera 21 and the eyeball under test by superimposing the chart and the calibration image. The distance is then fed back to the analysis module. The analysis module has a built-in calibration algorithm for measuring pupil rotation angle and direction. Substituting the distance obtained from the calibration module into the calibration algorithm eliminates calibration errors caused by individual anatomical differences such as orbital depth and nasal bridge height, improving the accuracy of the analysis module's calculations of eye movement angles in motion videos. The nine-axis inertial measurement unit (IMU) includes a three-axis gyroscope, a three-axis accelerometer, and a three-axis magnetometer. It can collect real-time motion data of the patient's head in six degrees of freedom, add high-precision timestamps synchronized with the video frames of the motion video, and then send them to the analysis module. The analysis module can use the data collected by the nine-axis IMU to drive a 3D head model for animation demonstration during video playback, thereby recreating the changes in body position during the examination process, replacing traditional scene cameras. The wireless output module can be a Wi-Fi unit, allowing doctors to wirelessly project eye movement videos onto an external receiving device. The wired output module 311 can be a MIPI... Interfaces such as DSI and USB-C are used for connecting to data cables. These interfaces are sealed with interface plugs 3111, providing multiple options for transmitting analysis results such as motion video. This enhances the flexibility and convenience of data transmission between the device and the receiving device, and can better adapt to different usage scenarios and the connection needs of the receiving device.

[0048] Referring to Figures 5, 6, 7, and 8, in the second embodiment, the headband 12 includes an elastic band 121, a mounting base 123, a drive gear 124, a handwheel 125, two bent tubes 122, two connecting blocks 126, two transmission racks 127, and two limiting bands 128. Each bent tube 122 is sleeved on the elastic band 121. Inside the bent tube 122, a near-eye section, a bent section, and a far-eye section are sequentially formed along the direction from near to far from the lens body 1. The cross-section of the elastic band 121 in the near-eye section and the far-eye section can be rectangular. The cross-section of the elastic band 121 within the bent section can be U-shaped, so that the dimension of the bent section in the height direction of the lens body 1 is smaller than the dimensions of the near-eye section and the far-eye section in the height direction of the lens body 1; the bent sections correspond one-to-one with the wearer's ears, and when wearing the lens body 1, each bent section is located on the corresponding ear root and between the corresponding outer ear and scalp; the mounting base 123 has an internal receiving cavity, and the drive gear 124 is rotatably connected to the cavity wall of the receiving cavity; the side of the mounting base 123 near the frame 11 is fitted onto the elastic band 121 via a connecting ring. The handwheel 125's shaft passes through a through hole on the side of the mounting base 123 away from the frame 11 and extends into the receiving cavity, where it is connected to the drive gear 124 on the same rotating shaft. Connecting blocks 126 correspond one-to-one with bent tubes 122, with each connecting block 126 connected to the outer wall of the corresponding bent tube 122. Two connecting blocks 126 are symmetrically arranged with the mounting base 123 as the center. The transmission rack 127 and the limiting belt 128 also correspond one-to-one with the connecting blocks 126, with one end of each transmission rack 127 connected to the corresponding connecting block 126. The other end of each rack 127 passes through the opening on the mounting base 123 and extends into the receiving cavity, and meshes with the drive gear 124. The tooth surfaces of the two transmission racks 127 are arranged opposite each other with the drive gear 124 as the center. Each connecting block 126 has a limiting groove on the side near the mounting base 123 along the circumferential direction of the headband 12. One end of each limiting band 128 is inserted into the corresponding limiting groove and abuts against the groove wall. The other end of each limiting band 128 is connected to the mounting base 123, and each limiting band 128 can slide along the limiting groove.

[0049] Specifically, the aforementioned limiting band 128 and transmission rack 127 can be made of elastic materials such as spring steel or elastic plastic, so that the wearer can drive the drive gear 124 to rotate by turning the handwheel 125. The drive gear 124 meshes with the two transmission racks 127 and can drive the two transmission racks 127 to move the two connecting blocks 126 and the two bent tubes 122 closer or further apart, thereby adjusting the position of the bent tubes 122 to accommodate the outer ears of different wearers. When wearing the lens body 1, the bent section is located on the ear root and between the outer ear and the scalp. This design prevents the headband 12 from wrapping around or compressing the wearer's outer ears, further improving the stability and comfort of wearing, and thus facilitating longer periods of wear. At the same time, the limiting band 128 is inserted into the limiting groove of the connecting block 126, which plays a limiting role during the adjustment process, ensuring the stability and accuracy of the headband 12 adjustment, and ensuring the stability of the equipment during the inspection process.

[0050] The implementation principle of the portable video nystagmus detection eyepiece described in this application is as follows:

[0051] This portable video nystagmus detection eyepiece uses an eyeball camera 21 to capture video of the movement of the eyeball under test, and a calibration camera 22 to capture a calibration image containing both the eyeball camera 21 and the eyeball under test. A control board 31 analyzes the calibration image to obtain the distance between the eyeball camera 21 and the eyeball under test, and then combines this distance with the analysis of the video motion to send the result to a display 32. Compared to existing technologies where calibration accuracy is easily affected by individual facial anatomy differences, leading to interference with the accuracy of eyeball movement angle calculation, this eyepiece can accurately measure the actual distance between the eyeball and the camera, dynamically adjust the calibration parameters based on the measured distance, eliminate calibration errors caused by individual anatomical differences such as orbital depth and nasal bridge height, and significantly improve the accuracy of eyeball movement angle calculation.

[0052] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A portable video nystagmus detection eyepiece, characterized in that: The system includes a lens body (1), an image acquisition component (2), and an analysis component (3). The lens body (1) includes a frame (11) and a headband (12). One end of the headband (12) is connected to one end of the frame (11), and the other end of the headband (12) is connected to the other end of the frame (11). The image acquisition component (2) includes an eye-tracking camera (21) and a calibration camera (22). Both the eye-tracking camera (21) and the calibration camera (22) are located on the side of the frame (11) near the headband (12). The eye-tracking camera (21) can acquire video of the movement of the eyeball under test, and the calibration camera (22) can capture a calibration image containing the eye-tracking camera (21) and the eyeball under test. The analysis component (3) includes a control board (31) and an analysis component (3). The control board (31) is electrically connected to the display (32). Both the control board (31) and the display (32) are mounted on the frame (11). The control board (31) is electrically connected to the image acquisition component (2) and can receive the motion video and the calibration image. The control board (31) can first analyze the calibration image to obtain the distance between the eye-camera (21) and the eyeball to be tested, and then combine the distance to analyze the motion video and send the analysis result to the display (32). The control board (31) includes a calibration module. The calibration module has a built-in chart with a scale containing the eye-camera (21). The calibration module is configured to superimpose the chart and the calibration image and read the distance between the eye-camera (21) and the eyeball to be tested.

2. The portable video nystagmus detection eyepiece according to claim 1, characterized in that: The control board (31) also includes a video editing module and an analysis module. The image acquisition component (2) includes two eye-cameras (21), each corresponding to one of the wearer's eyes. The video editing module can splice and crop the motion video captured by the two eye-cameras (21) and send the finished video to the analysis module. The analysis module is electrically connected to the display (32) and can analyze the finished video. The analysis module can also send the analysis results to the display (32).

3. A portable video nystagmus detection eyepiece according to claim 2, characterized in that: The control board (31) further includes a wired output module (311) and a wireless output module. Both the wired output module (311) and the wireless output module are electrically connected to the analysis module. The wired output module (311) can be electrically connected to the receiving device via a data cable and send the analysis results to the receiving device. The wireless output module can be wirelessly connected to the receiving device and send the analysis results to the receiving device.

4. A portable video nystagmus detection eyepiece according to claim 2, characterized in that: The control board (31) also includes a nine-axis inertial measurement unit, which is capable of measuring the motion data of the wearer's head in six degrees of freedom, and is electrically connected to the analysis module and can send the motion data to the analysis module.

5. A portable video nystagmus detection eyepiece according to claim 1, characterized in that: It also includes a target, which includes an indicator light (4), which is located on the side of the frame (11) near the headband (12) and electrically connected to the control panel (31).

6. A portable video nystagmus detection eyepiece according to claim 1, characterized in that: The lens body (1) also includes a buffer ring (13), which is located on the side of the frame (11) near the headband (12). The image acquisition component (2) is located inside the buffer ring (13). The buffer ring (13) includes an eye socket section (131) and a nose pad section (132). The eye socket section (131) is adapted to the wearer's eye socket, and the nose pad section (132) is adapted to the wearer's nose. The thickness of the nose pad section (132) is different from the thickness of the eye socket section (131).

7. A portable video nystagmus detection eyepiece according to claim 6, characterized in that: It also includes an infrared fill light (5), which is located on the side of the frame (11) near the headband (12) and inside the buffer ring (13). When the buffer ring (13) is in contact with the wearer's face and forms a dark room inside the buffer ring (13), the infrared fill light (5) can fill the dark room.

8. A portable video nystagmus detection eyepiece according to claim 1, characterized in that: The headband (12) includes an elastic band (121) and two bent tubes (122). Each bent tube (122) is sleeved on the elastic band (121). Inside the bent tube (122), a near-eye segment, a bent segment, and a far-eye segment are sequentially formed along the direction from near to far from the lens body (1). The dimension of the bent segment in the height direction of the lens body (1) is smaller than the dimensions of the near-eye segment and the far-eye segment in the height direction of the lens body (1). The bent segment corresponds one-to-one with the wearer's ear. When wearing the lens body (1), each bent segment is located on the root of the corresponding ear and between the outer ear and the scalp of the corresponding ear.

9. A portable video nystagmus detection eyepiece according to claim 8, characterized in that: The headband (12) also includes a mounting base (123), a drive gear (124), a handwheel (125), two connecting blocks (126), two transmission racks (127), and two limiting bands (128). The mounting base (123) has an internal receiving cavity. The drive gear (124) is rotatably connected to the cavity wall of the receiving cavity. The rotating shaft of the handwheel (125) extends into the receiving cavity through a through hole on the side of the mounting base (123) away from the frame (11) and is connected to the drive gear (124) on the same rotating shaft. The connecting blocks (126) correspond one-to-one with the bent tubes (122). Each connecting block (126) is connected to the outer wall of the corresponding bent tube (122), and the two connecting blocks (126) are symmetrically arranged with the mounting base (123) as the center. The transmission racks (127) and the limiting bands (128) are also included. Each of the transmission racks (127) corresponds one-to-one with the connecting block (126). One end of each transmission rack (127) is connected to the corresponding connecting block (126). The other end of each transmission rack (127) passes through the through hole opened on the mounting base (123) and extends into the receiving cavity. They mesh with the drive gear (124) in the mounting base (123). The tooth surfaces of the two transmission racks (127) are arranged opposite each other with the drive gear (124) as the center. Each connecting block (126) has a limiting groove opened on the side near the mounting base (123) along the circumferential direction of the headband (12). One end of each limiting band (128) is inserted into the corresponding limiting groove and abuts against the groove wall. The other end of each limiting band (128) is connected to the mounting base (123). Each limiting band (128) can slide along the limiting groove.

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