30 results about "Hyperacuity" patented technology

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.

A mobile device and a method for testing an individual's vision are provided, the mobile device including a screen for displaying at least one test pattern, such as a smartphone or a tablet computer. A test of the individual's vision is performed using the test pattern displayed on the screen of the mobile device, in particular for testing visual acuity, contrast sensitivity and / or visual disturbances. Further, a parameter influencing the test result is evaluated before and / or during performing the test. The parameter includes at least one of the distance between the eye of the individual and the screen; the brightness at which the test pattern is displayed; and the ambient luminosity.

The invention discloses a flight personnel space orientation capability assessment method based on holographic eye movement characteristics, and belongs to the technical field of flight personnel capability assessment. Extracting multi-dimensional eye movement characteristics such as pupil contraction / expansion tracks, iris stability parameters and proportional change rate; aligning and matching the eye movement characteristics with real-time flight attitude and environmental stimulation data; carrying out collaborative analysis on the features, and generating a fusion eye movement feature vector insensitive to ambient light interference; and finally, inputting the spatial orientation capability into a pre-trained spatial orientation capability evaluation model, and outputting quantitative evaluation values of spatial perception acuity, environmental adaptability and stress response level. According to the method, the problems that an existing evaluation method is high in subjectivity, prone to being interfered by the environment and difficult to comprehensively reflect the complex physiological cognitive state of the pilot are solved, and more objective, stable and comprehensive quantitative analysis on the spatial orientation capacity is achieved.

A computer system for building dynamic local relocation acumen using large language models may be provided. The computer system may be programmed to (i) receive, from a user computer device, a selection of a location; (ii) retrieve, from one or more remote servers, information about the selected location; (iii) retrieve, from one or more remote servers, a plurality of images of the selected location; (iv) execute at least one model to output a location guide using the information about the selected location and the plurality of images of the selected location; (v) receive as output of the execution of the at least one model the location guide for the selected location; and / or (vi) transmit instructions to a user computer device to display the location guide on the user computer device.

The application belongs to the technical field of vision care, and provides a kind of intelligent glasses, glasses box and vision training method, intelligent glasses include: frame mechanism;Lens mechanism, it includes left mirror unit, right mirror unit and pupil distance adjusting unit, left mirror unit, right mirror unit are connected with pupil distance adjusting unit to realize lens pupil distance adjusting function;Drive mechanism is connected with pupil distance adjusting unit to realize zoom vision training function.The intelligent glasses provided by the application is simple in appearance, light in quality, can replace daily ordinary corrective glasses for use, can improve the user's retinal imaging quality by adjusting the lens pupil distance, reduce the eye fatigue, at the same time, the lens can be driven to reciprocate to realize zoom vision training function, effectively exercise ciliary muscle, improve the accommodation ability and acuity of ciliary muscle, play the effect of preventing and treating myopia and amblyopia, the vibration is weak, avoid the phenomenon of dizziness and discomfort produced in the training process, improve the user experience and vision training effect of wearer.

An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye; an objective measurement optical system configured to measure objective refractive characteristics of the subject eye; and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to perform measurement of the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during a weakest power test in which a weakest point is being obtained by the subjective measurement optical system, a maximum visual acuity value or a set predetermined visual acuity value being readable from the weakest point.

To provide a dynamic visual acuity-enhancing composition.SOLUTION: Provided is a dynamic visual acuity-enhancing composition containing cassis anthocyanin as an active ingredient and improving dynamic visual acuity, particularly dynamic contrast discriminability.SELECTED DRAWING: None

The present invention is directed to methods for the use of 5'-adenosine diphosphate ribose (ADPR), and compositions thereof, for improving visual acuity, for example, in subjects having low / poor visual acuity resulting from an eye disease or condition.

One embodiment provides a system and method that assist in curing or providing relief for ocular conditions utilizing a visual aid device that presents images to one or more areas of interest on the eye of the user. Additionally, utilizing the described visual aid device, the system and method can induce hyperacuity in a user also through the presentation of images. Different characteristics of the images that are generated and presented may be modified based upon the desired application. Other embodiments are described herein.

Disclosed herein are system and method for testing and analysis of visual acuity and changes using an acuity model, the acuity model generated based on one or more acuity chart design parameters and candidate acuity parameters calculated using the acuity test data of the subject, the acuity model comprising a chart-specific psychometric function determined using a family of multiple-optotype psychometric functions, and wherein the acuity model is configurable to estimate possibility of obtaining the acuity test data of the subject.

The present disclosure concerns a testing device (500) comprising: a light-field projector display (100) sequentially emitting a plurality of light fields (101); a spatial light modulator (SLM) (3) controllable to modulate the light fields (101); projection optics (4) configured to project the modulated light fields (101) and form at least a virtual image (40) in a projection image plane (400); and wherein the SLM image pattern (61) is configured to add at least one refractive correction to said at least one virtual image (40). A human interface device (HID) (503) is configured to let a user select at least one of the virtual images (40) for which the user perceives as having the best image subjective quality input the refractive correction corresponding to the selected at least one of the virtual images (40) in a data storage unit (509). The present disclosure further concerns a computer-readable medium configured to perform a method for to assess the vision acuity of a user by using the testing device.

The invention discloses lactobacillus reuteri LR1349 and application thereof in improving eye injury induced by blue light, and belongs to the technical field of microorganisms. The lactobacillus reuteri LR1349 disclosed by the invention is preserved in the German Microorganism and Cell Culture Collection Center (DSMZ), and the preservation number is DSM 35135. The lactobacillus reuteri LR1349 provided by the invention can effectively improve the reduction of visual acuity, retinal dysfunction and retinopathy caused by blue light irradiation. Therefore, the lactobacillus reuteri LR1349 disclosed by the invention can be used for preparing medicines, foods or food additives for improving eye injury induced by blue light or relieving visual fatigue.

A computer implemented method and corresponding computer program product and device determine an indication of a user's acuity level. The methods and devices facilitate performance of acuity tests in a decentralized manner while establishing a desired test accuracy irrespective of a particular type of device or display, to determine the indication in a reliable manner. A computer implemented method includes the steps of: performing an optical acuity test using a control unit in communication with a device display having a predefined resolution; and displaying the optical acuity test on the display. The displayed optical acuity test includes a graphical representation with a discontinuity and prompts the user to identify the discontinuity by providing a response. The control unit and display provide that the optical acuity test is adjusted by generating and displaying the discontinuity based on the response and based on anti-aliasing using one or more display pixels.

The present disclosure concerns a testing device (500) comprising: a light-field projector display (100) sequentially emitting a plurality of light fields (101); a spatial light modulator (SLM) (3) controllable to modulate the light fields (101); projection optics (4) configured to project the modulated light fields (101) and form at least a virtual image (40) in a projection image plane (400); and wherein the SLM image pattern (61) is configured to add at least one refractive correction to said at least one virtual image (40). A human interface device (HID) (503) is configured to let a user select at least one of the virtual images (40) for which the user perceives as having the best image subjective quality input the refractive correction corresponding to the selected at least one of the virtual images (40) in a data storage unit (509). The present disclosure further concerns a computer-readable medium configured to perform a method for to assess the vision acuity of a user by using the testing device.

A virtual eye test can be conducted to evaluate visual acuity in a dynamic virtual reality (VR) environment. The test uses an electronic device with a head-mounted display (HMD) and a camera. The device generates a VR user interface corresponding to a three-dimensional virtual environment and renders it on the HMD. A dynamic real-world visual experience is simulated in the VR interface. The device tracks eye movements and response times to visual stimuli presented in this dynamic experience, using the camera. Depth perception, motion detection, and spatial awareness are evaluated based on these measurements, providing a comprehensive assessment of dynamic visual acuity.

The invention discloses a multi-modal target detection method based on an attention mechanism, and relates to the field of automatic driving, and the method comprises the steps: obtaining obstacle point cloud data of a laser point cloud and a 4D millimeter wave radar; performing point cloud column division on the point cloud to generate a laser and millimeter wave point column set; on the basis of the point column set, constructing a mixed attention mechanism by using point attention and point column attention, and evaluating to obtain a key point location and a key column body; fusing the two to generate a fused point cloud feature and generate a pseudo image; and outputting an obstacle detection result according to the pseudo image. The point cloud is segmented through point column processing, target features of the laser radar in severe environments such as smoke are enhanced through 4D millimeter wave mixed attention, the detection sensitivity and precision are improved, and the automatic driving reliability is improved.

A display apparatus includes: a display; a user interface; a memory storing a contrast sensitivity test image and a contour sensitivity test image for measuring a visual acuity level of a user; and at least one processor configured to: through the user interface, receive a user input for identifying visual acuity information of the user, in a state in which the contrast sensitivity test image and the contour sensitivity test image are displayed on the display, based on the information stored in the memory, identify a plurality of sample images having different image qualities and corresponding to a plurality of image types based on the identified visual acuity information, in a state in which the visual acuity information of the user is identified based on the user input, identify image quality information corresponding to each of the plurality of image types.

A head-mounted device and related method may increase visual acuity during content presentation by determining spatial displacements between an eye and the lens vertex; generating translational transformation parameters by generating a translation matrix based on the spatial displacement; and applying transformation parameters to ensure accurate visual alignment during visual acuity testing.

A head-mounted display device (HMDD) operable to provide extended-reality (XR) services is provided. The HMDD includes a display, adjustable lenses that include an active medium proximate the display, a memory, and a processor device coupled to the memory. The processor device is operable to determine a visual acuity metric associated with a user and, based on the visual acuity metric associated with the user, adjust an optical characteristic of the adjustable lenses, such as refractive index, lens curvature, and / or the like. In some examples, the adjustable lenses are electro-optical lenses comprising an active liquid crystal medium that is operable to adjust an optical characteristic associated therewith in response to applied electrical stimuli. In some examples, the adjustable lenses are opto-mechanical lenses comprising an active fluid medium within a flexible membrane that is operable to adjust an optical characteristic associated therewith in response to applied mechanical stimuli.

Procedure for determining the visual acuity characteristics of a subject who has at least one astigmatic refractive error, comprising the following steps: - Providing refractive error data of the subject, wherein the refractive error data includes at least one axis position of a required optical cylinder correction; - Selecting a preferred direction (V1; V2) such that this preferred direction (V1; V2) either corresponds to the axis position assigned to the optical cylinder correction, or is rotated by 90° to this axis position, or the preferred direction (V1; V2) is derived from wavefront data using a point spreading function; - Creating a visual effect at least in the selected preferred direction; - Display of at least one adapted optotype which has a directional feature, wherein the adapted optotype is displayed oriented such that its directional feature is arranged parallel to the preferred direction (V1; V2); and - Determining the visual acuity characteristics of the subject for the selected preferred direction (V1; V2) taking into account at least one dimension of the directional feature of the adapted optotype as well as the applied optical effect; where a hatched area is used as the adapted optotype, in which the hatching lines are arranged perpendicular to the selected preferred direction (V1; V2); and / or in which, in addition to the adapted optotype, at least one further optotype is displayed, the gray value of which corresponds approximately to an average gray value of the adapted optotype, and the subject is asked to distinguish the displayed optotypes from each other as part of a visual task.

The invention discloses a bifidobacterium longum subsp. Longum strain and application thereof in improving blue light induced eye injury. The bifidobacterium longum subsp. Longum BL531 disclosed by the invention is preserved in the German Microorganism and Cell Culture Collection Center DSMZ, and the preservation number is DSM 35139; the bifidobacterium longum subsp. Longum BL1363 is preserved in the German Microorganism and Cell Culture Collection Center DSMZ, and the preservation number is DSM 35138. The bifidobacterium longum subsp. Longum strain disclosed by the invention can effectively improve the reduction of visual acuity, retinal dysfunction and retinopathy caused by blue light irradiation. Therefore, the bifidobacterium longum subsp. Longum strain disclosed by the invention can be used for preparing medicines, foods or food additives for improving eye injury induced by blue light.

A wearable device is disclosed. The wearable device receives an input for changing a distance between a user and a virtual window. While receiving the input, based on changing the distance between the user and the virtual window from a first distance, the wearable device identifies that a size of the at least one content included in the virtual window at a second distance of the virtual window from the user, which is changed from the first distance, corresponds to visual acuity information of the user from the gaze of the user, and based on identifying the second distance of the virtual window based on the visual acuity information, ceases changing the distance between the user and the virtual window according to the input being received.

The invention relates to the technical field of amblyopia treatment, and discloses an amblyopia training device which comprises a support unit, a virtual reality unit, a filter unit, an audio stimulation unit, a transcranial stimulation unit and a control unit. The bracket unit comprises a top side part, a rear side part and a lug part; the virtual reality unit comprises display glasses; the filter lens unit comprises a lens bracket, a first filter lens and a second filter lens; the audio stimulation unit comprises two loudspeakers; the transcranial stimulation unit is connected to the rear side part; the control unit is electrically connected with the display glasses, the loudspeaker and the transcranial stimulation unit; according to the amblyopia device provided by the invention, the display glasses, the loudspeaker, the first filter, the second filter and the transcranial stimulation unit are arranged to stimulate the user in various ways, so that the effect of activating the visual center of the user to improve the visual acuity of an amblyopia person in an interactive and additive manner is achieved.

The invention relates to a method for determining the sensitivity of at least one eye of a test subject based on at least two pairs of visual acuity and refraction values provided, wherein at least one of the pairs of visual acuity and refraction values is provided by the following steps: - projecting a target with an adjustable target refraction into at least one eye of the test subject, wherein the target is configured to verify a predetermined visual acuity; and - determining a visual acuity limit refraction of the at least one eye of the test subject associated with the predetermined visual acuity by changing the target refraction of the target projected into the at least one eye of the test subject and detecting a test subject action that causes a determinable identifiability of the target of the test subject to have changed at the time of the test subject action.

Methods and systems disclosed herein relate generally to systems and methods for predicting a future visual acuity of a subject by using machine-learning models. An image of at least part of a retina of a subject can be processed by one or more first machine-learning models to detect a set of retina-related segments. Segment-specific metrics that characterize a retina-related segment of the set of retina-related segments can be generated. The segment-specific metrics can be processed by using a second machine-learning model to generate a result corresponding to a prediction corresponding to a future visual acuity of the subject.

One embodiment provides a system and method that assist in curing or providing relief for ocular conditions utilizing a visual aid device that presents images to one or more areas of interest on the eye of the user. Additionally, utilizing the described visual aid device, the system and method can induce hyperacuity in a user also through the presentation of images. Different characteristics of the images that are generated and presented may be modified based upon the desired application. Other embodiments are described herein.

A method for determining acuity-of-vision characteristics of a test person with a astigmatic visual defect, including: providing visual defect data for the test person, wherein the visual defect data includes a cylinder axis or axial position of a required optical cylinder correction; selecting a preferential direction such that this preferential direction either corresponds to the cylinder axis which is assigned to the optical cylinder correction, is rotated by 90° to this cylinder axis, or is derived from wavefront data using a point spread function; applying an optical power in the selected preferential direction; displaying an adapted visual sign, which has a directional feature, wherein the adapted visual sign is displayed aligned such that its directional feature is parallel to the preferential direction; and determining acuity-of-vision characteristics of the test person for the selected preferential direction, taking into account a dimension of the directional feature and the applied optical power.

To evaluate visual function in a low-vision population, a width of a first stripe to be displayed to a subject is determined based on a defined viewing distance and a first visual acuity value. A brightness characteristic width-wise across the first stripe is determined to provide isoluminance of the first stripe with respect to a background intensity of the screen. The first stripe is displayed in motion across the screen at a defined velocity, the first stripe. Tracking data is generated from movement of the subject's eyes using a camera. A tracking decision is determined characterizing whether the subject successfully tracked the first strip. A width is determined of a second stripe to be displayed in a further iteration of the test, or the test is ended, based on the tracking decision. A visual acuity threshold is determined based on a width of a last or penultimate displayed stripe.