33 results about "Vision testing" patented technology

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.

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 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 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.

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.

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 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.

A user's visual capabilities can be evaluated via a virtual reality (VR) system, which can include a VR headset in electronic communication with a computing device. The computing device causes simulated underwater environments, which can include objects, optotypes, and various lighting conditions, to be displayed on the VR headset. Using varying combinations of eye-tracking sensors, eye-tracking cameras, motion-tracking sensors, handheld devices, and microphones, the VR headset collects data about the user as she participates in visual tasks within the simulated underwater environments. Optionally, advanced algorithms in the computing device dynamically alter the simulated underwater environments and the visual tasks and analyze the user's responses to evaluate the user's underwater visual capabilities and her qualification for jobs that require her to work underwater.

This invention discloses a vision testing method and system based on arbitrary spatial location. The method includes: obtaining the geometric center of the optotype; constructing a three-dimensional coordinate system with the geometric center as the origin; obtaining the position information of the subject's eyes in the three-dimensional coordinate system; determining the subject's horizontal viewing angle relative to the smallest horizontal optotype and vertical viewing angle relative to the smallest vertical optotype based on the subject's distinguishable smallest horizontal optotype, smallest vertical optotype, and position information; and determining the subject's standard visual acuity value based on the horizontal and vertical viewing angles. The method and system of this invention can realize vision testing at any spatial location, by one or multiple people simultaneously. It has high testing efficiency and accuracy, exceeding the national standard of 0.1° visual angle (5-minute recording method), and has wide applicability and strong practicality.

This application discloses an automatic generation method and system for variable distance correction results of electronic vision charts, relating to the field of electronic vision testing. The method includes: obtaining the target examination distance of the examinee and configuring a target examination distance mode based on the target examination distance; performing vision testing on the examinee according to the target examination distance mode to obtain the original recognition result; extracting correction parameters corresponding to the original recognition result from the distance correction relationship, and using the correction parameters to convert the original recognition result to generate a standardized vision result; performing a format conversion on the standardized vision result according to the target format to obtain the format-converted standardized vision result; and generating a structured variable distance correction result. This application improves the automation level of variable distance correction and standardized result generation of electronic vision charts, and can perform multiple format conversions and structured recording, facilitating multi-scenario use and interconnection, and enabling collaborative product applications with existing modules.

This invention relates to the field of animal vision testing technology, and particularly to a quantitative detection method and system for mouse vision. The invention guides the mouse from an initial position to locate an underwater platform below a first display screen, while gradually increasing the spatial frequency of the grating on the first display screen. The method records whether the mouse's choice is correct after each increase in the spatial frequency of the grating, thereby fitting a curve of the grating's spatial frequency versus the test accuracy. This invention guides the mouse by setting a grating, records the correctness of the mouse's actions, and then fits a curve of the grating's spatial frequency versus the test accuracy. A threshold is then selected to calibrate and compare the vision of different mice. This method is non-invasive and can be used for long-term monitoring of visual system development.

Systems and methods for vision test and uses thereof are disclosed. A method may be implemented on a mobile device having at least a processor, a camera and a display screen. The method may include capturing at least one image of a user using the camera of the mobile device; interactively guiding the user to a predetermined distance from the display screen of the mobile device based on the at least one image; presenting material on the display screen upon a determination that the user is at the predetermined distance from the display screen; and receiving input from the user in response to the material presented on the display screen. The material presented on the display screen may be for assessing at least one characteristic of the user's vision. Mobile devices and non-transitory machine-readable mediums having machine-executable instructions embodied thereon for assessing a user's vision also are disclosed.

A vision test can be performed based on real-time audio instructions in a virtual environment. An electronic device, such as a head-mounted display, can execute a user application that is configured to enable the vision test. The electronic device can obtain an instruction to implement a target vision test. Based on a determination that the target vision test corresponds to a driver license issuing requirement, the electronic device can load a VR user interface to create a 3D VR environment, determine an illumination scheme, and display a virtual traffic scene on the VR user interface based on the illumination scheme. The virtual traffic scene can include a plurality of traffic signs located at a plurality of distances.

A patient's spatial awareness can be evaluated via a virtual reality (VR) system, which includes a VR headset in electronic communication with a computing device. The computing device causes virtual environments, which can include objects and / or obstacles, to be displayed on the VR headset. Using varying combinations of eye-tracking sensors, eye-tracking cameras, motion-tracking sensors, handheld devices, and microphones, the VR headset collects data about the patient as she attempts to locate objects or avoid obstacles while she is led through virtual environments. Optionally, advanced algorithms in the computing device dynamically alter the patient's path through the virtual environments based on the patient's spatial awareness.

The utility model discloses an ophthalmology vision testing device, which comprises a support, two poking devices, two baffle plates and an adjusting device, the two poking devices respectively comprise a poking plate and a connecting component, and the poking plate is rotatably arranged on one side of the support; the connecting assembly is rotatably arranged on one side of the support, and one end of the connecting assembly is connected with one end of the shifting plate; the two shielding plates are rotatably arranged on the support, and one ends of the two shielding plates are connected with the other end of the connecting assembly. Therefore, through simple plate shifting operation, a user can easily cover and expose eyes, the vision detection efficiency is improved, the device can be tightly attached to the face sizes and shapes of different individuals through the design of the adjusting stretching mechanism, the test comfort and accuracy are improved, and the practicability is high. The adaptive design is beneficial to meeting the requirements of people of different age groups and facial features.