68 results about "Visual impairment" patented technology

The application relates to the field of computer-aided technology and specifically discloses a vision-impaired drawing assistance system based on physiological signals and behavior analysis, aiming to solve the problems of mechanical assistance process and poor interactive experience in the prior art. The system comprises a physiological signal acquisition module for acquiring user concentration and emotion, a drawing behavior perception module for capturing brush pressure and trajectory, a multi-modal data fusion and intention analysis module for fusing data and analyzing creation intention, an adaptive guidance strategy generation module for generating personalized guidance strategies, and a multi-channel feedback execution module for providing voice, tactile and sound feedback. Through the cooperative work of the above modules, the system can realize real-time perception of user state and intention, dynamically adjust multi-sensory assistance guidance, and thus improve the naturalness of interaction and the assistance effect.

The invention provides a method for producing an optical element of a user-customized ophthalmic lens for an image-generating display device positionable on the head of a user, the method comprising the following steps: A) producing a plurality of substrate stacks (25) of a first variant and a plurality of substrate stacks (25) of a second variant, the substrate stacks (25) of all variants comprise in each case a waveguide (11) having a first side (16) and a second side (17) and a first lens (20) connected to the first side (16), the substrate stacks (25) of the same variant have in each case the same optical property, and the substrate stacks (25) of different variants differ in at least one predetermined optical property; b) producing a customized lens (21) for the user based on the visual impairment of the user and based on the selected substrate stack variants; and C) providing a selected variant of the substrate stack (25) and the produced custom lens (21) in order to be able to connect the produced custom lens (21) with the provided substrate stack (25) in order to produce the ophthalmic lens (3) customized for the user.

An image processing method, circuit, visual impairment auxiliary device, electronic device, and medium are provided. The method includes: obtaining a to-be-processed image and a reference image of the to-be-processed image, the size of the reference image being smaller than the size of the to-be-processed image; performing compression processing on the to-be-processed image according to the size of the reference image; and determining the image quality of the to-be-processed image according to the to-be-processed image after the compression processing.

Tactile floor guidance system for persons with impaired vision, comprising an arrangement of guidance elements (100) laid on a floor with a tactilely perceptible surface structure (120), wherein the arrangement extends along a predefinable path to guide persons along this path, and wherein the arrangement of guidance elements (100) includes at least one curved guidance element (300) in addition to straight guidance elements (200).

A computer program is provided that includes an artificial intelligence-based model, wherein the computer program is designed to, when implemented by a computer, use the model to enable the computer to determine information characterizing a treatment plan for said refractive eye surgery based on information characterizing a patient and information characterizing the visual impairment of the patient's eye to be corrected by said refractive eye surgery.

The invention discloses an application operation method and device, electronic equipment and a storage medium. The method comprises the steps of determining first operation information according to a first application; determining a first operation instruction, and determining a first operation path according to the first operation instruction and the first operation information; determining a first image; and operating the first application according to the first image, the first operation information and the first operation path. According to the method, the trigger path of the first application is determined according to the first operation information, and the first application is triggered according to the obtained trigger path, so that an object with visual impairment can be assisted to complete the operation on the application; the problem that the hearing of an object with visual impairment is occupied by existing operation software is avoided, the safety of privacy information can be guaranteed, and the safety of the object with visual impairment can also be guaranteed.

Methods and systems are provided for a transportation vehicle. One method includes determining a visual impairment parameter indicating a degree of visual impairment of a passenger of a passenger seat associated with the seat device, determining a passenger location of the passenger and a location of a target, estimating an initial facing direction toward which the passenger faces, determining a position adjustment parameter indicating a position adjustment to be made by the passenger of the passenger seat to face the target, based on the passenger location, the location of the target, and the initial facing direction, and outputting a position adjustment instruction according to the position adjustment parameter, the position adjustment instruction including at least an audio instruction in response to the visual impairment parameter indicating visual impairment of the passenger.

The invention relates to the technical field of medical rehabilitation, in particular to a hemiplegia vision rehabilitation training appliance which comprises a display panel used for playing target patterns and a communication module used for storing a basic training scheme, a mounting shell is detachably connected to the display panel, and an eye tracker used for capturing the eyeball rotation condition of a patient is arranged at the top of the mounting shell; an adjusting cavity is formed in the mounting shell, transparent plates are fixedly connected to the two sides of the adjusting cavity, and a light-transmitting assembly used for changing the light intensity is arranged in the adjusting cavity; the communication module is electrically connected with a control panel used for inputting and storing a basic training scheme, and the control panel is used for obtaining the eye movement condition of the patient based on the eye tracker to adjust the light-transmitting assembly; the visual impairment and rehabilitation condition of the patient can be verified conveniently, and the scheme suitability of the patient in the training process is improved.

The utility model provides a satellite point diffusion re-check multi-point fog-sand multi-effect lens and glasses, and relates to the technical field of lenses, the lens comprises a lens body, at least partial area of the lens body is provided with a point diffusion area, the point diffusion area comprises a transition point diffusion area, a main nucleus point diffusion area and a satellite point diffusion area, the transition point diffusion area is arranged at the inner side, and the main nucleus point diffusion area is arranged at the outer side. The main nuclear point diffusion area and the transition point diffusion area are arranged on the outer side, and the main nuclear point diffusion area and the satellite point diffusion area coincide; the main nuclear point diffusion area comprises a plurality of main nuclear diffusion points, the satellite point diffusion area comprises a plurality of satellite diffusion points, the diameter of the satellite diffusion points is smaller than that of the main nuclear diffusion points, and the satellite diffusion points and the main nuclear diffusion points are arranged in a staggered mode; on one hand, on the basis of ensuring the light transmission of the lens, vision deepening is inhibited in a contrast weakening mode, the effect is remarkable, on the other hand, contrast change transition is gentle and gentle, visual impairment caused by overlarge contrast difference change can be effectively reduced, and the lens is more comfortable to wear.

A method for evaluating or improving a visual system of a subject is disclosed. The method comprises the steps of displaying multiple visual stimuli to the subject over a time period, wherein each visual stimulus comprises a motion signal; and receiving subsequent inputs from the subject indicating the subject's perception of a direction of motion of the motion signal in each visual stimulus.

A method, system and computer program product for automated visual setting importation is disclosed. A first application running on a first device requests a vision setting for a second application. A vision setting of the first application running on a first device is determined to correspond to the vision setting for the second application. The vision setting for the second application is then applied to the corresponding vision setting of the first application.

The present invention provides ophthalmic formulations comprising long-acting beta-adrenergic receptor agonist (LABA) compounds, long-acting muscarinic antagonists (LAMA), and combinations thereof. Also provided are methods of treating visual impairment with LABA, LAMA, and combinations thereof.

The application relates to an ophthalmic preparation, a preparation method and use. The ophthalmic preparation comprises: a pentetrazol hydrochloride, a buffer and water for injection, wherein the mass / volume ratio of the pentetrazol hydrochloride is 0.001%-2%, and the total concentration of the buffer is less than or equal to 50 mM. The ophthalmic preparation can effectively treat and / or prevent visual impairment eye diseases, and has the advantages of safety, effectiveness, good stability and the like, and is suitable for popularization and application.

The application relates to the technical field of medical treatment, in particular to an intelligent medicine auxiliary system based on patients with cognitive impairment. The application comprises a terminal interaction layer, a perception decision layer, a cloud service layer and a user management layer; the perception decision layer comprises an intelligent medicine management module and a personalized adaptation module; the intelligent medicine management module is used for performing multiple reminders, medicine identification verification, medicine taking behavior recording and medicine taking record backtracking according to a preset medicine taking scheme; the personalized adaptation module is used for dynamically adjusting a reminding mode and an interaction strategy according to a cognitive impairment degree and a visual impairment grade of a patient. The application aims to provide an intelligent medicine auxiliary system based on patients with cognitive impairment, so as to realize safe, standardized, intelligent and personalized medicine taking management for patients with cognitive impairment.

A method and system of performing an authentication of an identity of a person with visual impairments. The system and method are configured to cause a wearable secondary computing device worn by a guide dog accompanying the person to generate a verification signal. This verification signal can be evaluated to determine whether the verification signal is authentic and / or includes an expected biometric data feature. If the verification signal is deemed to be authentic, the system can verify an identity of the person, and can further be configured to automatically grant the person access to one or more services, features, or information for which the person is authorized.

This invention relates to the field of axial length data processing technology, specifically to an intelligent intervention system for myopia prevention and control in adolescents based on dynamic axial length monitoring. The invention uses normally labeled samples of the same sex as reference samples for the samples to be analyzed, obtaining multiple axial length time periods. Based on the axial length distribution of the samples to be analyzed and the reference samples within each axial length time period, the degree of visual impairment for each sample within each axial length time period, and the critical value for the degree of impairment of non-impaired samples, are obtained. Based on the distribution of visual impairment degree and axial length of the samples to be analyzed and impaired samples within each axial length time period, overall similar samples are obtained. Based on the distribution of visual impairment degree of overall similar samples within different axial length time periods, and the critical value for the degree of impairment, dynamic axial length monitoring is performed on the samples to be analyzed. This invention improves the accuracy of dynamic axial length monitoring by accurately analyzing the degree of visual impairment and the critical value for the degree of impairment of the samples.

The invention discloses a visual impaired person behavior ability assessment method and system, and relates to the technical field of visual rehabilitation, and the method comprises the steps: obtaining a dynamic behavior video of a visual impaired person; analyzing the dynamic behavior video by using a human body posture recognition library and a deep learning algorithm, and determining a head rotation direction and rotation times of the visually impaired person; and comparing and analyzing the head rotation direction and the rotation frequency of the visually impaired person with a pre-established standardized reference table, evaluating the actual use effect of the magnifying visual aid or the visual field expanding visual aid worn by the visually impaired person, and generating a personalized rehabilitation scheme according to the actual use effect. According to the method and the system provided by the invention, the visual behavior capability of a low-vision group is reflected more comprehensively and accurately by evaluating the head rotation frequency index of the visually impaired person in dynamic behaviors such as obstacle avoidance and search, so that powerful support is provided for formulating a personalized rehabilitation scheme.

The invention relates to a flexible sensor array and a preparation method and application thereof, and relates to the field of flexible electronics and sensors, the flexible sensor array comprises an electrode layer, a strain isolation layer, a dielectric layer, a bonding layer and a packaging layer which are sequentially laminated; and the strain isolation layer is an elastomer with gradient Young modulus distribution and the like. According to the low-crosstalk and high-sensitivity flexible sensor array based on the gradient modulus isolation layer, collaborative optimization of sensitivity and crosstalk of the flexible sensor array is achieved mainly through arrangement of the strain isolation layer with the gradient modulus and design of the AP parameter of the array area proportion, and the low-crosstalk and high-sensitivity flexible sensor array based on the gradient modulus isolation layer is manufactured. The multi-scene use requirements of high-resolution tactile perception, electronic skin, man-machine interaction, visual impaired assistant education and the like can be met, and the application prospect is wide.

Eyeglass set, comprehensive a) a pair of glasses (1) i) with at least one lens (4), ii) with a nose cutout (6) for the nose of a glasses wearer, and iii) with a head-holding device (9) connected to at least one lens (4) for holding the glasses (1) on the head of the wearer, b) a nose support element (2) that can be detachably and magnetically attached to the glasses (1) for supporting the glasses (1) against the nose of the wearer when the nose support element (2) is mounted, and c) a vision correction component (3) that can be magnetically attached to the glasses (1) and which i) has at least one corrective lens (24) for correcting a visual impairment of the spectacle wearer, and ii) has its own nose support (26) to support the glasses (1) against the nose of the wearer of the glasses when the corrective lens (3) is mounted.

Presented are electrical microcurrent systems for treating ocular diseases, methods for making / using such microcurrent systems, and wearable microcurrent devices for treatment of macular degeneration. A microcurrent system for treating an ocular disease includes a mounting support, e.g., that mounts inside a housing shell of a microcurrent headset unit. Mounted onto the mounting support, e.g., inside the housing shell, are a power source that stores and dispenses electrical power, and a system controller that electrically connects to and controls the electrical output of the power source. A pair of electrically conductive eyecups is attached to the mounting support and electrically connected to the power source to receive therefrom an electrical microcurrent. Each eyecup may be a single-piece structure that includes a pair of terminal rails projecting from respective sides of a longitudinal end of an elongated pedestal. The terminal rails are shaped and sized to contact an eyelid of a user.

The invention relates to the technical field of visual impairment simulation, in particular to a visual impairment dynamic evolution simulation system and method. Multi-modal medical image data of a patient is collected and subjected to preprocessing and focus positioning, an individual visual pathway fiber bundle is constructed by adopting a deterministic fiber tracking algorithm based on diffusion tensor imaging data, non-rigid registration is performed on the individual fiber bundle and a standard visual pathway template, a local deformation field is calculated, and the focus positioning accuracy is improved. Based on a local deformation field, analyzing a spatial geometrical relationship between a focus mask and each section of nerve fiber to obtain an individualized three-dimensional visual pathway model and an SDI scoring matrix of each section corresponding to the individualized three-dimensional visual pathway model, and judging a damaged pathway section and a typical visual field defect mode matched with the damaged pathway section in degree; according to the method, individualized visual simulation of a patient is realized, a visual dynamic evolution prediction model is constructed by utilizing diffusion Transform, and dynamic evolution of visual impairment is realized.

The invention discloses a multi-modal communication and inductance integration method based on an artificial intelligence large model. The method comprises the following steps: acquiring target scene data to construct a multi-modal communication and inductance integration data input stream; extracting heterogeneous features based on a modal specific encoder; performing cross-modal dynamic fusion based on a hybrid expert architecture; inputting the fused unified features into a specific output head of the task, and outputting a prediction result of the downstream task; performing multi-task joint training in combination with a task loss function and load balancing loss; the method comprises the following steps: firstly, accurately extracting features and unifying dimensions; secondly, the hybrid expert mechanism flexibly adapts to dynamic environments such as night vision loss and the like while greatly reducing the calculation overhead through a sparse activation strategy, so that the perception robustness is ensured; and finally, in combination with a lightweight wharf solution and a load balancing training strategy, expert collapse is effectively prevented, and high-precision and low-delay diversified general sensing tasks are supported.

This invention provides a projection method, apparatus, device, and medium for robotic laparoscopic surgery. The method includes: determining whether visual impairment exists during the robotic laparoscopic surgery; if so, obtaining a target transformation matrix; calculating a target position of the end effector of the robotic arm based on the target transformation matrix and the theoretical spatial position of the end effector of the robotic arm in the endoscopic coordinate system at the current moment; and projecting the end effector of the robotic arm based on the target position. The target transformation matrix is ​​the transformation matrix corresponding to the last unimpaired moment before visual impairment occurs, used to represent the transformation relationship between the actual spatial position and the theoretical spatial position of the end effector of the robotic arm in the endoscopic coordinate system. This method can improve the display accuracy of the end effector and enhance the safety and continuity of robotic laparoscopic surgery.

The invention discloses a barrier-free toolbar technical scheme based on a WeChat applet, and relates to the technical field of front-end development, the barrier-free toolbar technical scheme comprises a barrier-free toolbar system, the barrier-free toolbar system comprises a theme style component, a state management module, a global configuration tool, a user interaction component and a barrier-free function component, the theme style component comprises a black.js theme style file, a blue.js theme style file, a light.js theme style file, a white.js theme style file and a tellow.js theme style file and is used for defining different color matching schemes, the state management module is used for managing states related to theme styles by utilizing a theme.js file, and according to the barrier-free toolbar technical scheme based on the WeChat applet, through the color matching switching and click screen reading functions, the color matching of the WeChat applet can be realized, and the color matching efficiency of the WeChat applet can be improved. The browsing experience of users with visual impairment and the like is obviously improved; meanwhile, slot configuration and global introduction are adopted, the workflow of developers is simplified, the technical threshold is reduced, in addition, various crowds with abnormal color vision are supported, the containment of digital products is enhanced, and the universal accessibility of Web content is powerfully promoted.

The utility model belongs to the field of medical apparatus and instruments especially, it is a kind of analytical equipment of evaluating YAG treatment MIOL after the analysis device of visual effect of visual impairment, it includes the measuring table for evaluating YAG treatment MIOL after the measuring table of visual effect of visual impairment, the top of measuring table is slidably installed with measuring equipment main part, the side of measuring equipment main part is equipped with lifting groove;The inside of lifting groove is slidably installed with sliding block, the side of sliding block is fixedly installed with moving column, the moving column is equipped with universal mechanism, the side of universal mechanism is equipped with lighting light source, the top of measuring table is fixedly installed with head fixer. The utility model can adjust the angle of lighting light source, so that it can more accurately illuminate the eye of patient when measuring, no longer need medical staff to manually adjust several times, greatly improve the measuring efficiency, increase the practicability of equipment and the accuracy when measuring.

This invention provides an ophthalmic composition for treating and / or preventing visual impairment caused by changes in the structure of the eye's lens, specifically involving alterations in the proteins that form the lens. The ophthalmic composition comprises a combination of a therapeutically effective amount of a polyphenolic compound and a terpene compound, or their salts or crystalline forms, requiring low doses of the bioactive compound to treat the disease with reduced frequency of administration. In particular, the ophthalmic composition of this invention can be used to treat and reverse visual impairments caused by changes in lens structure, such as cataracts, by reversing the lens opacity caused by the disease.

The present disclosure relates to methods and systems for evaluating vision in subjects, particularly those with low vision or visual impairments. Further provided herein are methods and systems that enable effective testing to monitor and evaluate changes in a subject's vision over time.

An interaction method and a terminal device. The terminal device receives a first location signal through a screen. An interface displayed on the screen includes an operation area and a display area, the operation area includes a first target area, and a page displayed in the display area includes a first target function. The terminal device determines, based on the first location signal, that a location of a touch point is in the first target area, and then the terminal device provides a first feedback used to introduce the first target function.

To provide a method for treating, improving, alleviating or preventing deterioration of visual function due to presbyopia. A method for treating, improving, alleviating, or preventing visual function decline due to presbyopia, the method comprising the steps of (A-1) administering repetitive transcranial magnetic stimulation (rTMS) or (A-2) transcranial electrical stimulation to the brain of a subject suffering from presbyopia.

This application discloses a smart bracelet and an air conditioner control method, relating to the field of wearable devices. The method includes: a temperature acquisition module, a controller, and a communication module disposed inside the bracelet housing; a guide rail disposed on the outer wall of the bracelet housing; a lever slidably mounted on the guide rail; a motor connected to the lever for transmission; the motor driving the lever to slide along the guide rail; the controller generating first air conditioner control parameters based on the user's body temperature acquired by the temperature acquisition module; and sending the first air conditioner control parameters to the air conditioner via the communication module, causing the air conditioner to operate according to the first air conditioner control parameters; the controller controlling the motor to drive the lever to slide along the guide rail according to the first air conditioner control parameters, so that the lever slides to the position in the guide rail corresponding to the air conditioner control parameters. This application enables automatic control of the air conditioner and display of air conditioner operating parameters in application scenarios such as at night or when the user has visual impairments.