249results about "Phoropters" patented technology

The invention belongs to the technical field of visual training, and particularly relates to a multi-dimensional visual training feedback method for improving binocular fusion visual and stereoscopic visual functions, and the method comprises the following steps: carrying out medical baseline detection, generating an initial ability portrait through visual function evaluation and cognitive ability testing, matching training difficulty parameters, and generating a personalized scheme; multi-modal game training is carried out, training types comprise gamification training, animation scene training and offline family task training, and the training difficulty is dynamically adjusted; a tutor performs remote one-to-one guidance, and dynamically adjusts a training scheme according to a change report by tracking the training progress in real time; and the system performs multi-dimensional effect evaluation and self-optimizes a difficulty prediction algorithm. According to the method, the problems of dull training and passive participation, scheme stiffness and execution deviation, single stimulation and cognitive load, scene limitation and continuous interruption are solved.

This application is directed to media content compensation at an electronic device having a head-mounted display. The electronic device determines a multifocal eyewear prescription of a user associated with the electronic device. The multifocal eyewear prescription includes a multifocal parameter for a lens having a plurality of focal lengths. The electronic device obtains input media content, converts the input media content to corrective media content based on the multifocal eyewear prescription of the user, and renders, on the HMD, the corrective media content. In some embodiments, the lens includes a plurality of segments corresponding to the plurality of focal lengths. Each image frame of the input media content is divided into a plurality of regions based on the plurality of segments. The electronic device compensates the plurality of regions of the input media content based on the plurality of focal lengths to generate the corrective media content.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing symmetric or asymmetric optic with aspheric surface which redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the intraocular lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

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.

A patient's contact lens fitting profile can be performed using an electronic device in a virtual environment. The electronic device can execute a visual assessment application and display visual content continuously for an extended duration of time in the 3D virtual environment. The visual content can be displayed with predefined display parameters associated with contact lens fitting. The electronic device can obtain a stream of sensor data measured by the one or more sensors and apply at least a contact lens fitting model to generate a contact lens fitting profile for a user associated with the electronic device based on the stream of sensor data.

The invention relates to the technical field of visual function diagnosis, and provides a visual function examination device based on eye movement tracking, a medium and computer equipment, the device comprises a data acquisition unit, an eye movement evaluation unit, a visual field evaluation unit and a comprehensive analysis unit, the data acquisition unit is used for acquiring visual function data of an examinee, and the comprehensive analysis unit is used for analyzing the visual function data of the examinee; the eye movement evaluation unit evaluates an eye movement function based on eye movement parameters in the visual function data; the visual field evaluation unit evaluates a visual field function based on visual field parameters in the visual function data; according to the application, objective sight drop points are used for replacing subjective keys, false negative and false positive are reduced, before typical defects do not appear in the visual field, early visual function changes can be prompted through eye movement parameter abnormity, auxiliary screening of early glaucoma and other diseases is achieved, and the visual function detection accuracy is improved. Meanwhile, the diagnosis accuracy is improved through double evidences of eye movement and visual field in the middle and late stages, and the sensitivity and specificity of visual function examination are remarkably improved on the whole.

The invention belongs to the technical field of control systems, and particularly relates to a control system based on combination of dynamic focal length adjustment and vision correction, which comprises a bearing plate and a parameter configuration and feedback module, the two sides of the top of the bearing plate are rotationally connected with lens groups, and the parameter configuration and feedback module is used for collecting user information and initial matching training core parameters and sending the initial matching training core parameters; continuously receiving multi-dimensional real-time feedback, and iteratively optimizing parameters based on the feedback; the dynamic training content generation module is used for generating dynamic 2D and 3D contents and interactive games of adaptive set and adjustment training according to the training parameters optimized by the parameter configuration and feedback module; on the basis, through an adjusting and training mechanism combining hardware and software, personalized adaptation to vision requirements of different users is achieved, medical risks and high cost of laser surgery are avoided, and the problems that traditional glasses and contact lenses are limited in adaptability and inconvenient to use in daily life are solved.

A virtual eye test can be conducted to evaluate visual acuity and perception 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 photorealistic virtual environment and render the VR user interface on the HMD. The electronic device can simulate one or more real-world scenarios and while simulating the one or more real-world scenarios, in real time, track eye movements and responses from the wearer for testing visual acuity and perception of the wearer.

The present inventive concept provides methods of determining whether a subject has cortical or cerebral visual impairment (CVI) as well as determining whether the subject has a traumatic brain injury thereby allowing treatment for these conditions. The present inventive concept also provides a standardized method for assessing pediatric or adolescent visual acuity.

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.

An ophthalmic multifocal lens is presented, configured to provide distance vision and at least one other usable visual acuity. The lens comprises a translucent lens body having an optical axis and a refractive baseline, the refractive baseline extending to at least a portion of the lens body, and a diffraction grating configured to act as an optical splitter, extending concentrically in the radial direction and superimposed on at least a portion of the refractive baseline. The diffraction grating configured to act as an optical splitter is further configured to be continuous within at least a central 3 mm aperture, wherein the distance vision is provided by the -1st order diffraction, and the near vision is provided by the 2nd order diffraction.

This invention provides a subjective optometry information processing program and a subjective optometry system that allow users to appropriately understand the usage status of subjective optometry devices. [Solution] A subjective eye examination information processing program is executed by an information processing device that processes information related to a subjective eye examination device, wherein the subjective eye examination information processing program is executed by the control unit of the information processing device, causing the information processing device to execute: an eye examination information acquisition step of acquiring eye examination information indicating at least one of the content of the eye examination and the time of the eye examination by the subjective eye examination device; a status information generation step of generating status information indicating the usage status of the subjective eye examination device by processing the acquired eye examination information; and an output step of outputting the status information.

Method for generating and displaying a video that simulates a user's vision; said method comprising an assessment step (F1) wherein a plurality of tests (T, T1, T2, T3, T4) are executed on the user to evaluate the user's visual abilities and information and indices (Q, Q1, Q2, Q3; L1, L2, L3, L4....) on the user's visual abilities are collected, an acquisition step (F2) wherein a plurality of sequential images of the same scene (H) are acquired from said two different positions, so as to have a plurality of right and left images (D1, D2, D3..... S1, S2, S3....), a post-processing step (F3) wherein said right images (D1, D2, D3.....) and said left images (S1, S2, S3....) are processed based on said information and indices (Q, Q1, Q2, Q3, L1, L2, L3, L4....) detected in said evaluation step (F1), so as to obtain aberrated binocular images (V1b, V2b, V3b), and a video playback step (F4) wherein said aberrated binocular images (V1b, V2b, V3b) are displayed on a display (200) of a visor (2) so as to playback said video (V) emulating a user's vision.

This subjective optometry system for subjectively measuring optical characteristics of a subject's eye comprises: a visual target presentation means that presents a test visual target to the subject's eye; a corrective means that changes optical characteristics of a light flux emitted from the visual target presentation means; a self-optometry program setting means that sets either a first self-optometry program for automatically causing a subject to proceed through a plurality of test items for the subject's eye on the basis of an inputted response, and a second self-optometry program that is for automatically causing the subject to proceed through a plurality of test items for the subject's eye on the basis of an inputted response and that uses a test condition different from that for the first self-optometry program; and a control means that controls the visual target presentation means and / or the corrective means on the basis of the first or second self-optometry program set by the self-optometry program setting means, to cause optometry to proceed in accordance with the procedure of the first optometry program or the second optometry program.

To provide a system and method of utilizing one or more images of an eye in medical procedures.SOLUTION: The disclosure provides a system that may acquire, via an image sensor, an image of an eye of a person; may determine a location of an iris of the eye from the image; may determine a position of a suction ring from the image; may display, via a display, the image; may display, on the image via the display, a first graphic overlay that indicates the location of the iris of the eye; may display, on the image via the display, a second graphic overlay that indicates the position of the suction ring; may determine multiple iris structures from the image; may determine an orientation of the eye based at least on the multiple iris structures from the image; and may display, via the display, information that indicates the orientation of the eye.SELECTED DRAWING: Figure 1A

The application discloses a continuous zooming optometry optical system, which comprises a negative spherical thin lens L1, a positive spherical thin lens L2 and a negative spherical thin lens L3 arranged in sequence on the same optical axis, the negative spherical thin lens L1 is arranged along the optical axis, the optical center of the negative spherical thin lens L3 is located at the image-side focal point of the positive spherical thin lens L2, the optical power of the negative spherical thin lens L1 is the optical power of the positive spherical thin lens L2 is the optical power of the negative spherical thin lens L3 satisfies the following relationship, and the application further discloses a portable subjective optometry instrument comprising the continuous zooming optometry optical system. The application can accurately simulate the optometry process of the plug-in sheet optometry, the optometry process is fast, the optometry result is accurate, and the optometry and lens matching time can be greatly shortened.

To provide an ophthalmologic device capable of changing an examination distance and a target presentation condition as desired, and improving measurement efficiency by quickly and easily executing measurement of eye characteristics on an eye to be examined under various examination distances and presentation conditions.SOLUTION: An ophthalmologic device includes a target projection system (32) for presenting a target to an eye (E) to be examined with a predetermined examination distance and a presentation condition according to the examination distance, and a control part (26) for controlling the target projection system (32). The control part (26) controls the target projection system (32) so as to present the target with a first examination distance for a far distance examination of the eye (E) to be examined, a second examination distance for a near distance examination, and at least one third examination distance different from the first examination distance and the second examination distance.SELECTED DRAWING: Figure 5

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.

An ophthalmologic apparatus includes a visual-target presenting portion (41) that is configured to present visual targets (8) to left and right subject eyes (EL, ER), respectively; and an objective measurement optical system (6, 7) that is configured to objectively measure eye characteristics of the left and right subject eyes (EL, ER), respectively. The visual-target presenting portion (41) is configured to present the visual targets (8) while changing a convergence position (R, R1, R2), where two lines of sight (SL1, SR1, SL2, SR2) from positions of the left and right subject eyes (EL, ER) intersect, with pinhole plates (50) respectively disposed at positions conjugate with pupils of the left and right subject eyes (EL, ER). The objective measurement optical system (6, 7) is configured to obtain the objective refractive values of the left and right subject eyes (EL, ER), respectively, under a condition where the pinhole plates (50) are respectively disposed by the visual-target presenting portion (41) and the visual targets (8) presented at the convergence position (R, R1, R2) are binocularly fused.

A virtual eye test can be conducted to evaluate peripheral vision 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 three-dimensional virtual environment and render the VR user interface on the HMD. The electronic device can simulate one or more spatial task scenarios and while simulating these scenarios, in real time, track gaze direction and peripheral responses to one or one or more using the camera. The device can then evaluate the gaze direction and peripheral responses for assessing peripheral vision performance.

A near-eye ophthalmic simulation device comprising a microdisplay (101), a light source (102) forming an exit pupil (103) at an exit pupil plane (105), to create a projected pattern on viewer's retina (112) appearing at a virtual image plane (109) when the user's pupil (106) substantially coincides with the exit pupil plane (105). A variable focus lens (108) placed to substantially coincide with an optical conjugate plane (111) of exit pupil plane (105), to control the virtual image distance (110) and the virtual image plane (109) location is comprised. Projected pattern carries visual information to simulate post-operative vision, distance whereof independently controllable by the variable focus lens (108).

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 provide a subjective optometer capable of smoothly performing temporary frame inspection.SOLUTION: A subjective optometer including: a target projection optical system for projecting a target light flux onto a subject's eye; a correction optical system disposed in an optical path of the target projection optical system and changing a correction amount of refractive power to be applied to the subject's eye; and a light guide optical system for guiding an image of the target light flux via the correction optical system to the subject's eye so as to be an optically prescribed examination distance; and subjectively measuring the optical characteristics of the subject's eye in an opened state in front of the subject's eyes, the subjective optometer includes measurement control means for changing the correction optical system into a non-correction state based on a start signal for starting temporary frame examination using a temporary frame.SELECTED DRAWING: Figure 1

Methods for assessing optokinetic reflex of a subject are provided. Aspects of the present invention include methods comprising presenting optokinetic reflex (OKR) stimuli to a subject, tracking eye movement of the subject in response to the OKR stimuli and assessing the OKR of the subject based on the tracked eye movements. Also provided are systems for assessing optokinetic reflex of a subject, and non-transitory computer readable storage media.

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.

Systems and methods for delivering effective and accurate vision care diagnostics to remotely situated patients are provided. A diagnostic assessment may be performed by using a depth of field assessment. The chart and the person may move or be moved relative to each other until the focal length of the refractive error of the eye equals the distance to the chart. The refraction systems / methods can also be conducted at a specific fixed work distance instead of moving the chart(s) relative to the person or the person relative to the chart(s) using an algorithm to calculate the refractive state of sphere, axis and cylinder power by size of the subtended angle in relationship to the distance to the chart. The system / method may include a holographic eye testing device that includes a head mounted device and that may be operative in a virtual reality, augmented reality or mixed reality frameworks.

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 is used to determine an order for performing various vision screening exams selected by a clinician for a patient in a compact timeframe and reduce time needed for pupil recovery between exams or other delays. The vision screening device captures visible and near infrared reflections from the patient and generates a composite image used for generating suggested diagnoses to a clinician via a display of the vision screening device.