51 results about "Vision testing" patented technology

A vision test can be implemented in a virtual reality (VR) environment using a computer device that includes a head-mounted display (HMD). The computer device can obtain historical vision data of a patient user. Based on the historical vision data, the computer device determines an ordered sequence of vision tests including a first vision test for the patient user. The first vision test is followed by a set of one or more subsequent vision tests of the ordered sequence of vision tests. The computer device executes a user application configured to enable the ordered sequence of vision tests by rendering a user interface on the display. A first visual stimulus of the first vision test is displayed on the user interface. The computer device obtains a user response to the first visual stimulus, and dynamically adjusts one or more subsequent visual stimuli based on the user response.

This application is directed to implementing a vision test by an electronic device having a head-mounted display (HMD). The electronic device executes a user application associated with the vision test, and obtains an instruction to implement a target vision test. A target user interface is selected between a virtual reality (VR) user interface corresponding to a three-dimensional (3D) virtual environment and an augmented reality (AR) user interface corresponding to a 3D AR environment. The electronic device implements the target vision test on the target user interface. In some embodiments, the VR user interface has a background view (e.g., a static beach view, a static city night scene, a dynamic traffic view) on which visual stimuli are overlaid. In some embodiments, the electronic device enables the AR user interface by setting the HMD to show a field of view and overlaying visual stimuli on the field of view.

Brain activity can be monitored to facilitate a vision test in a virtual reality (VR) environment using an electronic device that includes a head-mounted display (HMD) and a plurality of electrodes. The electronic device can execute a user application configured to enable a virtual vision test, and generates a VR user interface corresponding to a three-dimensional (3D) virtual environment. The electronic device renders, on the HMD, a user interface including a first visual stimulus corresponding to the virtual vision test. While displaying the visual stimulus, in real time, the electronic device collects a plurality of electrical signals by the plurality of electrodes that contact a head of a user, and determines information of at least one of a second visual stimulus following the first visual stimulus and a user response to the first visual stimulus based on the plurality of electrical signals.

This application is directed to implementing a vision test based on an avatar in a virtual environment. An electronic device includes a head-mounted display. The electronic device executes a user application configured to enable a virtual vision test, and generates a virtual reality (VR) user interface corresponding to a three-dimensional (3D) virtual environment. The electronic device obtains user information of a user associated with the electronic device, and concurrently displays an avatar and a sequence of visual stimuli on the VR user interface. While displaying each respective visual stimulus, the electronic device determines avatar characteristics based on the user information and the respective visual stimulus, and adjusts display of the avatar adaptively based on the avatar characteristics. The avatar characteristics includes a location of the avatar in the 3D virtual environment.

The invention provides a vision change condition monitoring device, and relates to the technical field of vision detection.The vision change condition monitoring device comprises a laser speckle generation system and a cam zoom system.The laser speckle generation system comprises a laser source and a diffuse reflection disc, and the diffuse reflection disc rotates around the center axis of the diffuse reflection disc; and a slit, a field-of-view segmentation inversion system, and a radially rotating third prism, wherein the third prism rotates the incident beam. The laser source emits laser, the laser forms laser speckles after passing through the rotating diffuse reflection disc, the laser speckles form diffraction fringes after passing through the slit, the diffraction fringes are changed into two groups of fringes with opposite movement directions after passing through the view field segmentation inversion system, and the two groups of fringes reach the cam zoom system after passing through the third prism rotating in the radial direction. And finally reaching the fundus retina. The vision change condition monitoring device provided by the invention is simple and reliable, a patient does not need to distinguish the clearness of an image, astigmatism can be measured besides myopia and hyperopia, and the device is convenient to use.

The invention discloses an infrared remote control visual chart-oriented synchronous mirror image control vision examination auxiliary system, which comprises an infrared receiving and transmitting device and a PC terminal, the infrared receiving and transmitting device comprises a development board, an infrared receiving module and an infrared transmitting module, and the PC terminal comprises a PC and is equipped with a bar code or two-dimensional code scanning gun and a bar code thermal printer. The PC is connected to an internal network and is connected with the development board; a signal pin of the infrared receiving module is connected with a digital pin D3 of the development board, a signal pin of the infrared transmitting module is connected with a digital pin D2 of the development board, and power supply pins of the infrared receiving module and the infrared transmitting module are respectively connected with a 5V pin and a GND pin of the development board; coding analysis software for infrared remote control of the visual chart and synchronous mirror image software for the infrared remote control visual chart are written in the PC, an infrared signal analysis database is established through the coding analysis software, and the software receives and sends infrared coding data through a COM port and an infrared receiving and emitting device.

1. Name of the product in this design: Vision tester (self-service). 2. Purpose of this design: For vision testing. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. As shown in other views, the top view is omitted; the bottom surface of this design product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

The invention discloses a student vision detection and management system based on edge artificial intelligence gesture recognition. The method comprises the following steps: firstly, judging identity information of a detected object student through a face recognition technology; if the comparison succeeds, the system confirms the standing position of the student through ultrasonic ranging, and preparation is made for vision detection. Then the screen displays' E 'for vision examination, gestures of the student are detected through the camera, and parents can check the vision condition and change condition of the child through the mobile phone applet end and take corresponding measures in time. The product can be deployed in public positions of teaching buildings of all schools in a sporadic manner, students can perform self-testing at any time / at regular time, individual and group vision data is persistent in the cloud for subsequent deep analysis and mining, such as transverse comparison and longitudinal analysis of different regions, different age groups and different genders, and the distribution condition and the change trend of vision problems are deeply understood. And a scientific basis is provided for making a targeted vision care plan.

A telescopic ocular refraction test system includes a display that displays a vision testing image. The system includes a telescope configured to be positioned in front of an eye of a patient for viewing the vision testing image through the telescope. The system also includes a control system that determines a vision correction parameter based on a position of a focus adjustment device that focuses the telescope.

An information processing device for estimating eyesight of a person comprises a processor coupled to memory storing machine readable instructions. The processor obtains image data representing an image of an eye and inputs the data into a machine learning algorithm trained to estimate eyesight characteristics from eye images. The system estimates the person's eyesight by determining at least one of myopia, hyperopia, and astigmatism based on the image data and algorithm output. The invention addresses limitations of traditional manual eyesight tests that are prone to human error and subjective patient feedback. The machine learning algorithm analyzes eye relaxation states and micromovements that indicate optimal vision correction, enabling objective automated eyesight assessment deployable in remote locations or consumer devices.

A vision test can be aided with controller actuation in a virtual environment. An electronic device, such as a head-mounted display, can establish a communication link between the electronic device and a controller held by a user associated with the electronic device. A user application can be executed to enable the vision test. The electronic device can display a VR user interface based on a driver license issuing requirement to create a 3D virtual environment, and the VR user interface can include a moving traffic scene on which one or more visual stimuli are displayed. The electronic device can drive one or more actuators of a controller in synchronization with displaying the VR user interface.

The invention discloses vision detection equipment, and belongs to the technical field of vision detection, the vision detection equipment comprises a driving device and a vision detection device, the vision detection device is connected with the driving device, so that the driving device can drive the vision detection device to move to detect the vision of different eyes of a user. The driving device is controlled to drive the vision detection device to move, so that the vision detection device does not need to cover the range of two eyes of a user at the same time, the size of the vision detection device can be reduced, the size of the whole vision detection equipment is reduced, and transportation and installation of the vision detection equipment are facilitated. And the driving device can automatically drive the vision detection device to move, so that the operation is simple, convenient and more accurate, the detection error possibly caused by holding the vision detection device by a user is avoided, and the automation degree of the vision detection equipment is improved.

The utility model discloses a posture correction mirror which comprises a base, a reflective flexible mirror and a vision detection sticker, the base is detachably mounted on a wall; the size of the light reflecting soft lens is smaller than that of the base, the light reflecting soft lens is movably arranged on the front surface of the base, and the front surface of the light reflecting soft lens is divided into a plurality of grids by a plurality of transverse separation lines and a plurality of longitudinal separation lines; and the vision detection sticker is detachably attached to the periphery of the reflective soft lens. According to the posture correction mirror provided by the utility model, on one hand, the position of the reflective soft mirror on a wall can be adjusted, and then the soft mirror is adjusted to a proper position, so that a child can adjust the sitting posture according to the picture in the soft mirror during learning; on the other hand, the child can conveniently carry out correct standing posture adjustment and posture adjustment during posture correction training according to pictures in the soft glasses at the standing position; in addition, vision conditions can be tested according to use requirements, and multifunctional use is facilitated.

An eye exam can be performed using an electronic device in a virtual environment to evaluate vision changes of a patient. The electronic device can execute a visual assessment application and display a user interface to create a 3D virtual environment. A predefined video clip can be displayed in the 3D virtual environment and include a plurality of visual sessions corresponding to a sequence of vision tests. While the predefined video clip is played, the electronic device can obtain a stream of sensor data measured by the one or more sensors and determine a plurality of first response parameters to the sequence of vision tests based on the stream of sensor data.

A method and system for supra-threshold vision testing. The method includes (a) selecting an object having a uniquely identifiable configuration at each of a plurality of successive rotational orientations, (b) presenting to a person the object in one of the rotational orientations, (c) receiving from the person a response identifying the perceived rotational orientation, (d) measuring a response time and correctness of the response, (e) repeating the steps (b)-(d) a predetermined number of times, and (f) determining a metric value using the number of correct responses and the measured response times from steps (b)-(d) according to a predetermined formula, wherein the test is performed under supra- threshold conditions.

Vision testing system (10, 42) for checking the eyes of a test subject, comprising a display device (11, 12, 13, 45, 46) with which vision test symbols can be visualized for at least one eye of the test subject (44), comprising a control unit (14) for controlling the display device, wherein the display device comprises a backlit screen (19, 30, 35), wherein the screen has an adjustment device for adapting a screen luminance to an ambient luminance, wherein the adjustment device has a measuring device for measuring the screen luminance, characterized in that the vision testing system (10, 42) comprises as a display device a stationary distance test display device (11, 12, 45) whose display area size is designed for vision tests with a viewing distance of 3 m to 10 m, and as a display device a portable near test display device (13, 46),the display area of ​​which is designed for vision tests with a viewing distance of 10 cm to 3 m, wherein the remote test display device has a camera device (25) by means of which the eyes of the test subject (44) can be recorded.

A vision test apparatus includes a hollow housing, a converging lens, and a diverging lens. The converging lens is arranged in the hollow housing, and includes a converging focal length. The diverging lens is arranged in the hollow housing at intervals relative to the converging lens, and includes a diverging focal length. Two optical axes of the diverging lens and the converging lens are overlap each other, and the diverging focal length partially overlaps the converging focal length. One end of the hollow housing adjacent to the diverging lens attaches a test optotype displayed by a display apparatus. The diverging lens demagnifies the test optotype to form a first virtual image within the converging focal length. The converging lens magnifies the first virtual image to form a second virtual image for a vision testing.

This application discloses systems and methods for automated vision testing. Performing automated vision testing can be beneficial in a number of eye care applications due to the reduction of chair time, increase of the measurement accuracy, elimination of human errors, capability for internal instrument calibration, and the possibility for test standardization.

1. Name of the designed product: vision tester (panda portable). 2. Use of the designed product: for vision testing. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

The utility model belongs to the technical field of vehicle testing, and particularly relates to a vehicle indirect visual field testing device, which comprises a user terminal, a vehicle-mounted visual field testing device, a three-dimensional 'H' point device, a wireless communication module and a mounting bracket, and is characterized in that the user terminal is used for receiving and displaying test image data of the vehicle-mounted visual field testing device; the three-dimensional 'H' point device is installed on a vehicle driver seat, the vehicle-mounted visual field testing device is connected with the three-dimensional 'H' point device through the installation support, and the vehicle-mounted visual field testing device rotates on the three-dimensional 'H' point device up, down, left and right under the action of the installation support; the vehicle-mounted visual field testing device comprises a camera, a light source module and a laser module, the camera and the light source module are located at eye points of the three-dimensional H-point device, and the laser module is installed on the peripheral side of the camera. According to the utility model, a problem of inconvenient operation in a vehicle indirect visual field test process in the prior art can be solved.

A method for self-guided vision testing may include obtaining, at a first electronic device in communication with a second electronic device, data indicative of a location of a target displayed by the second electronic device relative to the first electronic device or a user of the first electronic device as the target moves relative to the first electronic device; tracking a gaze direction of the user using one or more first image sensors; and presenting an indication of abnormal eye movement based on a relationship between a position of the target and a gaze direction as the target moves relative to the first electronic device or a user of the first electronic device.

To provide a refraction measuring apparatus having a wide measurement range.SOLUTION: An optometry device 100 includes: a refraction test unit 10 having an optical system for providing different vision correction powers close to the eye of an individual; and a display unit 20 adapted to generate a visual test image, the visual test image being visible through an exit aperture 10A of the test unit of the optometry device and the display unit including a screen 21 adapted to display a test image used in generating the visual test image and at least one optical element 30 having an optical power. The optical element is emitted by the screen and presents an active state in which it exhibits a non zero refraction power placed on an optical path of the light exiting the device through the output aperture, and an inactive state in which it introduces no refractive power on the optical path in order for the visual test image to be produced at a variable distance from the exit aperture.SELECTED DRAWING: Figure 1

A patient's retinal health can be evaluated via a virtual reality (VR) system, which can include a VR headset in electronic communication with a computing device. The VR headset can scan the patient's retinas using sensors and cameras. The computing device can cause a first vision test to be displayed on the screens of the VR headset. Using varying combinations of sensors, cameras, probes, and microphones, the VR headset collects data about the patient as she responds to the first vision test. Optionally, the computing device can cause a second vision test to be displayed on the screens, where the second vision test can be constructed on the patient's responses to the first vision test.

According to the technical scheme, the remote control vision detection device is characterized in that the remote control vision detection device comprises a display screen and a remote controller used for controlling the display screen; the remote controller comprises a shell, a circuit board installed in the shell, a limiting column installed on the circuit board, a first button installed on the limiting column, supporting arms arranged on the two sides of the first button, and a second button installed on the first button. The shell is provided with an opening, the second button is provided with a through hole, the second button penetrates through the opening, and the first button penetrates through the through hole and is partially exposed out of the opening; the two side supporting arms are connected with the circuit board and used for supporting the first button. A switch is arranged on the circuit board, the limiting column is located on the switch and connected with the first button, when the first button is pressed, the limiting column moves downwards to abut against the switch, the first button is limited to move downwards excessively, and the technical scheme has the beneficial effects that the service life of the pressed button is prolonged.

The utility model discloses a vision testing instrument with an adjusting function, which relates to the technical field of vision testing instruments and comprises a base, two universal wheels are arranged at the rear end of the lower side of the base, two clamping and locking mechanisms are arranged at the front end of the lower side of the base, a pedal is movably connected to the front side of the base, and the pedal is movably connected with the base. The upper side of the base is fixedly connected with a lifting mechanism, the upper side of the lifting mechanism is fixedly connected with a fixing frame, the front side of the fixing frame is fixedly connected with a display screen, the upper side of the fixing frame is movably connected with a dustproof plate, the clamping and locking mechanism comprises a fixing frame, and the upper side of the fixing frame is fixedly connected with a fixing rod. According to the utility model, through the mutual cooperation of the fixing frame, the clamping plate, the connecting plate, the movable plate, the fixing rod and the second spring, the rotating wheel can be limited and fixed, the stability of the device can be maintained through fixing the rotating wheel, and errors caused by rolling or moving in the measurement process can be avoided.

The utility model discloses an access control structure for a vision test room, which comprises a vision test room, an external connection shed and an access control structure, the vision test room is provided with two doors which can be opened, the external connection shed is arranged on the outer side of the vision test room and is attached to the vision test room, and the access control structure is arranged on the external connection shed. The external connecting shed is positioned on one side, provided with the door, of the vision detection room; extending baffles are symmetrically arranged on the two sides of the external connecting shed, the access control structure is arranged on one side of the external connecting shed, the access control structure is located between the two extending baffles, and two access channels are formed in one side of the external connecting shed through cooperation of the two extending baffles and the access control structure. The problems that in the prior art, when a vision detection room carries out vision detection, external personnel frequently enter and exit, the detection effect is poor, and the test accuracy is affected are solved.

The application discloses an interactive vision detection method, device, system, equipment and storage medium, and relates to the technical field of human-computer interaction. The method comprises the following steps: in the process of vision testing, first, displaying characters for vision detection with random opening directions through a front display screen of a person, and acquiring live video data collected in real time by a front camera of the person, then, sequentially processing the data through hand tracking, image interception and hand key point detection to obtain the pointing direction of the index finger, and judging whether the pointing direction is consistent with the opening direction of the displayed character, if yes, recording the test as correct, otherwise, recording the test as failed, finally, obtaining the vision detection result of the unshielded eye according to the test results recorded for multiple times, so that the distance for use is not limited, the purpose of long-distance vision testing is achieved, the user experience is improved due to the intuitive and convenient interaction mode, the adverse effects caused by a noisy environment are avoided, and finally, the accuracy of the vision detection result is ensured.

The utility model relates to the technical field of vision testing, and discloses a vision measuring device based on VR glasses, which comprises a VR glasses body, the VR glasses body comprises a shell, two displays used for displaying are arranged in the shell, two viewports matched with the displays are arranged on one side of the shell, a rotating shaft capable of rotating is arranged in the shell, and the two viewports are arranged on the other side of the shell. A plurality of mounting rings are fixedly mounted on the side surfaces of the two rotating shafts, and a lens is fixedly mounted in each mounting ring. According to the utility model, the VR glasses with the vision reading closest to that of the mounting rings are selected to be mounted in the mounting rings and worn, the eyes are positioned at the viewport position and observe the picture displayed by the display through the lenses in the mounting rings, and the plurality of mounting rings are rotated by rotating the rotating shaft; after a plurality of lenses are worn, pictures displayed by the display are compared, and the best adaptive lens is selected, so that a vision detection result can be obtained, and the vision measurement efficiency is improved.

The application relates to the technical field of ophthalmic detection equipment, and discloses a trial lens frame and a visual acuity detection method, which comprises two lens holding mechanisms, a nose frame, a wearing assembly and a pupillary distance detection mechanism. Each lens holding mechanism comprises a lens frame body, a position adjusting assembly and a plug-in piece assembly. The position adjusting assembly is arranged to be capable of adjusting the positions of the plug-in piece assembly in the horizontal direction and the vertical direction, so that the optical center of the test lens on the plug-in piece assembly is aligned with the visual axis of the eyeball of a wearer. The pupillary distance detection mechanism comprises two image acquisition assemblies, and the two image acquisition assemblies are arranged on the corresponding lens frame bodies. The positions of the test lenses are dynamically adjusted by using the position adjusting assembly in combination with the actual pupillary distance value and the visual axis angle difference provided by the pupillary distance detection mechanism, so that the optical center of the test lens is always aligned with the visual axis of the wearer. In this way, the artificial error can be reduced, the detection efficiency and accuracy can be improved, and the accuracy of lens fitting can be improved.