37 results about "Vision test" patented technology

A user's visual disorders can be treated via a virtual reality (VR) system, which can include a VR headset in electronic communication with a computing device. The computing device causes vision tests 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 can collect data about the user as she completes the vision tests. Using the data collected by the VR headset, the computing device can evaluate the user for various visual disorders and develop a personalized vision therapy plan for the user. Optionally, advanced algorithms in the computing device dynamically alter the vision therapy plan based on the user's performance and the progression of her visual disorders.

There is provided a method for determining type of cataract by an electronic device. The method includes performing vision focus calibration for a user, determining central and peripheral regions of interest on a display of the electronic device based on fixated vision, performing a primary test for obtaining scores for the central and peripheral regions of interest, selecting at least one vision test mode based on the obtained score, and adapting at least one visual display parameter based on the obtained score and the selected at least one vision test mode. The method also includes determining a type of cataract from the selected at least one vision test mode, determining severity of the determined type of cataract, and providing the determined type of cataract and the determined severity with one or more recommendations to the user.

The invention relates to the technical field of self-service optometry, and discloses an intelligent voice-guided self-service optometry operation system. A voice input acquisition module of the system obtains a user voice instruction, preprocesses the user voice instruction and outputs digital voice data; the optometry data real-time acquisition module synchronously captures eye physiological parameters and a vision test response sequence to generate an actually measured optometry data set; the dynamic optometry model construction module is used for outputting a vision state prediction value based on a historical optometry data warehouse training model; a multi-dimensional difference analysis module calculates a multi-dimensional deviation between a predicted value and an actually measured optometry data set, and generates an optometry difference index matrix; the visual problem positioning module executes spatial distribution mapping according to the matrix and outputs a thermodynamic diagram of a visual anomaly region; the adaptive voice guidance module generates a customized voice guidance instruction sequence based on the thermodynamic diagram. According to the system, optometry interaction convenience and data processing scientificity are improved, visual abnormity is accurately positioned, personalized guidance is provided, and self-service optometry experience and result accuracy are improved.

A virtual vision test can be performed to evaluate response time in detecting subtle visual changes under varying light conditions in a virtual reality (VR) environment. The test can be conducted using an electronic device with a head-mounted display (HMD) and a camera. The device can generate and render a VR user interface in a photorealistic virtual environment, simulating dynamic lighting scenarios. The device can continuously track eye movements in response to visual stimuli presented in these scenarios. The system can then evaluate the detection of subtle visual changes based on the tracked eye movements, and provide a comprehensive assessment of visual acuity and responsiveness under different lighting conditions.

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 visual assessment application, including generating a user interface corresponding to a three-dimensional virtual environment. The electronic device can display a plurality of visual stimuli in the user interface, and each visual stimulus can be displayed in duplication with respect to a respective target depth. The electronic device can receive one or more user responses, and each user response can indicate whether a user perceives a corresponding visual stimulus in duplication at the respective target depth. Based on the one or more user responses, the electronic device can determine a depth perception profile of the user, and the depth perception profile can include a plurality of depth perception levels corresponding to a plurality of target depths.

To perform a visual acuity test with high accuracy so as to be easily understood even by a child or the like.SOLUTION: A visual acuity examination display tool 20 includes a display tool body 21 and a visual acuity examination mark 100 displayed on the display tool body 21, and the visual acuity examination mark 100 includes a mark part 101 which can be recognized by an examination object person including a child, and a notch part 105 which is formed in a part of the mark part 101 and indicates a minimum separation threshold.SELECTED DRAWING: Figure 1

A vision screening device for administering vision screening tests to a patient, and in particular vision screening test(s) to determine the presence of diseases and / or abnormalities in the eye(s) of the patient, is described herein. The vision screening device includes emitters for emitting near-infrared light and white light from a patient-facing side and includes a sensor to receive reflected light and energy for performing vision screening tests. The received reflected energy comes into ana emission surface and is reflected by a beam splitter to a sensor. The vision screening device includes a first display for displaying digital objects for a vision test and a second display for a clinician to interact. The vision screening device further includes a sensor to aid in proper positioning of a patient during screening.

A virtual eye test can be conducted to evaluate night vision and glare sensitivity in a virtual reality (VR) environment. The test can be conducted using an electronic device that includes a head-mounted display (HMD) and a camera. The electronic device can generate a VR user interface corresponding to a photorealistic virtual environment and render the VR user interface on the HMD. The electronic device can simulate one or more dynamic lighting scenarios and while simulating these scenarios, in real time, continuously track eye movements and response times to visual stimuli using the camera. The device can then evaluate user response based on the eye movements and response times for testing night vision and glare sensitivity.

A vision test can be implemented in a virtual environment using an electronic device, such as a head-mounted display. The device can execute a visual assessment application and generate a user interface corresponding to a three-dimensional (3D) virtual environment. A plurality of visual stimuli can be displayed at a first acuity level in the 3D virtual environment and can have a plurality of first shadings. The electronic device can obtain one or more user responses and determine a first contrast perception level corresponding to the first acuity level. The electronic device can also determine a shading range for a second acuity level based on the first contrast perception level. The device can further determine a plurality of second shadings in the shading range. The plurality of visual stimuli can be displayed at a second acuity level in the 3D virtual environment with the plurality of second shadings.

A virtual reality (VR) system can be implemented for vision testing and eye health monitoring. The system utilizes an electronic device equipped with a high-resolution VR headset, eye-tracking sensors, and wearable devices capable of measuring intraocular pressure, tear film stability, and ocular blood flow. The device generates a VR user interface corresponding to a three-dimensional virtual environment and renders it on the VR headset. Within this environment, the system conducts a series of vision tests. Throughout these tests, the system continuously monitors eye movements using the eye-tracking sensors and collects vital data from the wearable devices. This data is then evaluated to assess both visual performance and overall eye health, providing a more holistic view of the user's ocular condition in a controlled virtual setting.

The invention relates to a support device (100) for supporting an optotype (102) for an examination of the near vision of a subject, the support device comprising: - an attachment means (110) intended to receive a near-vision test bar (15) fixed to a refractor head (12), the attachment means comprising a partly open hook (115) extending from a base (112), the hook having an inner surface provided with a bearing portion on which the near-vision test bar is adapted to bear, the bearing portion having a cross section with a broken-line shape formed by a hexagonal portion and a square portion, the hexagonal portion being intersected by the square portion such that the square portion forms a notch in the hexagonal portion; and - a support portion (130) for supporting the optotype mounted on the base of the attachment means.

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

The present disclosure provides a vision test optical system for improving eye health and a control method thereof, wherein the vision test optical system comprises: a ring-shaped light beam generating component for generating a ring-shaped light beam; a target light beam generating component for generating a target light beam; a control component for performing operation control processing on the ring-shaped light beam generating component and the target light beam generating component by using a mutual exclusion control strategy; and an optical system for projecting the ring-shaped light beam or the target light beam to the user's eye. Thus, by using the mutual exclusion control on the two light beam generating components, the vision test processing on the user's eye can be performed before and after the intervention on the user's eye. Through the two times of vision test processing, the intervention effect on the user's eye can be known, so that the compliance of the user in the eye intervention process is good, and the photobiomodulation effect is further improved. In addition, the vision test function and the eye intervention function are integrated into the same system, thereby reducing the cost.

A vision test can be performed for assessing eye depth perception in a virtual environment. An electronic device, such as a head-mounted display, can execute a visual assessment application, including generating a user interface corresponding to a three-dimensional virtual environment. The electronic device can identify a first line of sight of a user associated with the electronic device and select a plurality of positions on the first line of sight. For example, each position can be located in a respective position range. For each position, an object can be displayed at a plurality of locations within the respective position range. The electronic device can obtain a plurality of user responses to the displaying of the object for each position and determine a depth perception level of the user associated with the first line of sight based on the plurality of user responses.

A vision test can be performed for evaluating eye depth perception in a virtual environment. An electronic device, such as a head-mounted display, can execute a visual assessment application, including generating a user interface corresponding to a three-dimensional (3D) virtual environment. The electronic device may display a first visual stimulus at a first depth in the user interface, and the first depth can be measured on a first line of sight. The electronic device may display the first visual stimulus at a second depth in the user interface, and the second depth can be distinct from the first depth and measured on the first line of sight. The electronic device may obtain one or more user responses to displaying of the first visual stimulus. Based on the one or more user responses, the electronic device may determine a depth perception level for a user associated with the electronic device.

Methods, systems, and devices to improve the assessment of visual function and overcoming limitations of current methods to identify the visual function that potentially could be reached by a given eye. Multiple eye tests including visual stimuli plus optical measurement components, and methods to combine the results, identify and quantify sources of decreased vision resulting from optical sources, such as a lens and cornea as distinguished from retinal sources. By identifying potentially correctable optical sources of decreased vision, and overcoming physiological limitations such as size of the eye's pupil, the visual benefits of treatment such as by cataract or corneal surgery are distinguished from retinal pathology that requires medical intervention. The devices and methods provide metrics that include an expected value of the visual function and sources of variability including both optical and neural components, to guide treatment and improve clinical trials.

This device provides a phoropter for examining an individual's eye while observing a target along the optical path. [Solution] The present invention relates to a phoropter (100) for examining an individual's eyes while they are observing a target, the phoropter (100) comprises: - Two optical units (110, 120) for the individual's binoculars, each having an entrance on the target side, an exit aperture on the individual's side, and an optical system for providing different visual acuity correction powers to the corresponding eyes of the individual; - Moving means adapted to adjust the relative positions of the two optical units; - A partial reflection mirror (27) positioned between the optical units and the target; - An image acquisition device oriented toward the partial reflection mirror to acquire an image of the individual's eyes viewing the target through the two optical units; and - An image display device suitable for displaying the acquired image.

1. The name of the design product: electronic device's setting visual acuity test distance graphical user interface. 2. The use of the design product: for electronic device. 3. The design points of the design product: in the graphical user interface. 4. The picture or photo that best indicates the design points: design 1 front view. 5. Design 1 is designated as the basic design. 6. The use of the graphical user interface: for test distance setting when visual acuity test. 7. The change state description of the graphical user interface: click "next" in design 1 front view to display design 1 change state figure 1, click "finish" after selecting test distance in design 1 change state figure 1 to display design 1 change state figure 2, the interaction mode of design 2 and design 3 is the same as that of design 1. 8. A, B, C parts in the view are content picture areas, and X in the view represents replaceable text.

A device for testing vision through an intraocular lens has a support, which supports a corneal optic, a mounting for the intraocular lens, and an ocular optic one after the other distally to proximally in a central viewing axis. The ocular optic includes, distally, a correcting lens and, proximally thereto, a diverging lens and a collecting lens, wherein the correcting lens has a distal concave lens surface and a proximal convex lens surface.

A vision test can be performed for cylinder correction assessment in a virtual environment. An electronic device, such as a head-mounted display, cam display a video clip including a plurality of image frames. Each image frame can include a predefined visual stimulus having a respective orientation with respect to a focal point. While displaying the video clip, the electronic device can obtain eye image data of an eye of a user. The electronic device can collect eye response data including a pupil size from the eye image data and determine a spontaneous user response to the video clip based on eye response data. The electronic device can automatically determine one or more astigmatism parameters based on the spontaneous user response.

A virtual vision test can be conducted to measure pupil reaction to light changes and visual imperfections in a virtual reality (VR) environment. The test can be conducted using an electronic device with a head-mounted display (HMD) and a camera. The device can generate and render a VR user interface corresponding to a photorealistic virtual environment. The device can simulate dynamic lighting scenarios and, in real-time, and continuously track pupil data in response to visual stimuli presented in these scenarios. The device can then measure pupil reaction to light changes based on the collected pupil data, providing insights into visual imperfections and light sensitivity.

To provide visual defect determination and enhancement.SOLUTION: In some embodiments, visual defect information may be generated through a dynamic fixation point based on an eye feature. In the some embodiments, a first stimulation may be displayed at a first position on a user interface on the basis of the fixation point for visual inspection presentation. A fixation point for visual test presentation may be adjusted during the visual inspection presentation on the basis of eye feature information related to a user. As one example, the eye feature information may show the user's eye feature that is generated during the visual inspection presentation. A second stimulation may be shown during the visual inspection presentation at a second interface position on the user interface on the basis of the fixation point adjusted for the visual inspection presentation. Visual defect information associated with the user may be generated on the basis of feedback information showing a feedback related to the first stimulation and a feedback related to the second stimulation.SELECTED DRAWING: Figure 1A

A computer-implemented method for training of a machine learning model for determining a confidence value during at least one test cycle of a vision testing procedure is disclosed. The confidence value is designated to determine at least one action in at least one subsequent test cycle of the vision testing procedure. Further, a trained machine learning model, a computer program having instructions for training of the machine learning model and a training apparatus are disclosed. Additionally, a computer-implemented method for performing the vision testing procedure on a person, a computer program having instructions for performing the vision testing procedure, a vision test apparatus, and a method for producing a geometrical model of at least one spectacle lens for manufacturing of at least one spectacle lens are disclosed.

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.

A vision test can be adjusted based on a user's head orientation in a virtual environment. An electronic device, such as a head-mounted display, can display a visual stimulus at a target location in a 3D virtual environment. The device can monitor a head orientation of the user wearing the electronic device. The target location of the visual stimulus can be dynamically adjusted based on the head orientation. For example, the target location corresponds to a first orientation. The electronic device can determine whether the head orientation has stabilized at a current orientation a first extended duration of time greater than an orientation threshold and can move the target location of the visual stimulus to follow the current orientation.

A virtual eye test can be conducted to evaluate night vision and glare sensitivity in a virtual reality (VR) environment. The test can be conducted using an electronic device that includes a head-mounted display (HMD) and a camera. The electronic device can generate a VR user interface corresponding to a photorealistic virtual environment and render the VR user interface on the HMD. The electronic device can simulate one or more dynamic lighting scenarios and while simulating these scenarios, in real time, continuously track eye movements and response times to visual stimuli using the camera. The device can then evaluate user response based on the eye movements and response times for testing night vision and glare sensitivity.

The system according to this embodiment aims to provide early detection and countermeasures for vision loss and visual impairment. [Solution] The system according to the embodiment comprises a collection unit, an analysis unit, a detection unit, a notification unit, and a suggestion unit. The collection unit collects visual acuity test data, eye photographs, and lifestyle data. The analysis unit analyzes the data collected by the collection unit to understand the individual's visual state. The detection unit detects abnormalities based on the data analyzed by the analysis unit. The notification unit notifies the abnormalities detected by the detection unit in real time. The suggestion unit proposes preventive measures and corrective measures based on the abnormalities detected by the detection unit.

The utility model belongs to the field of visual testing, particularly relates to a CCD visual testing module, and aims to solve the problems that an existing CCD visual testing module is low in image contrast, difficult to distinguish target features and background and poor in testing accuracy due to the fact that the existing CCD visual testing module is not provided with a light source for illumination in the testing process and the reflected light intensity of the surface of a tested object is insufficient. In order to solve the problem of difficulty in feature extraction of objects with similar colors or complex surface textures, the utility model provides the following scheme that the device comprises a test board, a supporting rod is welded to the top side of the test board, and a sliding frame is arranged on the outer wall of the supporting rod in a sliding and sleeving manner. When the LED annular lamp is used, the LED annular lamp can be conveniently mounted and dismounted on the mounting ring, a good illumination condition can be provided for the CCD module, the accuracy and definition of a visual test are ensured, the problems that the image contrast ratio is low and target characteristics and background are difficult to distinguish are solved, and meanwhile image information of a tested object can be clearly collected; the image of the tested object under different conditions can be obtained, so that different test requirements can be met.

A vision screening device for administering vision screening tests to a patient, and in particular vision screening test(s) to determine the presence of diseases and / or abnormalities in the eye(s) of the patient, is described herein. The vision screening device includes emitters for emitting near-infrared light and white light from a patient-facing side and includes a sensor to receive reflected light and energy for performing vision screening tests. The received reflected energy comes into an emission surface and is reflected by a beam splitter to a sensor. The vision screening device includes a first display for displaying digital objects for a vision test and a second display for a clinician to interact. The vision screening device further includes a sensor to aid in proper positioning of a patient during screening.

The utility model discloses a vision testing room convenient to move, and relates to the technical field of vision testing, the vision testing room is composed of a supporting base, a bottom frame, a telescopic frame, a top frame and a room door, the supporting base is located at the bottom end, the bottom frame is installed on the supporting base, the telescopic frame is located in the bottom frame in a sliding mode, and the top frame is installed on the top frame. The top frame is arranged at the top end of the telescopic frame, and the top frame can vertically slide above the bottom frame through the telescopic frame; the door is installed at the side end between the bottom frame and the top frame, a driving assembly is arranged on the rear side of the bottom frame, a connecting assembly is arranged on the rear side of the top frame, and the connecting assembly is fixedly arranged on the top frame and connected with the working end of the driving assembly. The connecting assembly can drive the top frame to move up and down above the bottom frame under the operation of the driving assembly; the problem that in the prior art, an eyesight test room cannot be placed in a truck due to the height during transferring, and consequently transferring is inconvenient is solved.