18 results about "Vision disorder" patented technology

The invention relates to the technical field of treatment of myopia, and discloses a method and a composition for preventing or treating myopia by adopting vinpocetine, the method comprises vinpocetine, or tropicamide, or phenylephrine hydrochloride, or a combination of these substances as a sole active ingredient for inhibiting or controlling the progression of myopia; the methods in the present application can reduce the dependency of subjects with such visual impairments on corrective lenses. For example, the methods described herein may result in improved vision, including improved visual acuity. Abnormal axial elongation of eyeballs can be avoided, and therefore complications, especially serious retina diseases threatening vision, can be avoided.

Illustrative methods and devices for providing stimulus to the eye to treat vision disorders. Systems and methods for testing thresholds and configuring the stimulation for a patient are provided. Various examples may include therapies for vision disorders that can progress to blindness, such as macular degeneration or other diseases and disease processes.

The invention relates to an immersive blind person experience interactive game system. According to the blind person experience game, game players can feel the influence of vision limitation on life through immersive experience, game data analysis given by a game system is compared with data of task completion conditions through normal vision, the players can feel inconvenience brought by visual impairment more visually, and the experience experience of the blind persons is improved. The visual acuity of players for eyesight protection is stimulated, the players are promoted to take actual actions in daily life, for example, the use of electronic products is reduced, the outdoor activity time is prolonged, and myopia is effectively prevented. As a propaganda and education mode combining entertainment and education, compared with a traditional propaganda and education mode, the game system is more vivid and interesting, and the learning interest and acceptability of the public, especially teenagers can be remarkably improved.

A UV-laser-based system (UVL-LVC system) for correcting the impaired vision of a patient's eye has a UV-laser source, which emits laser radiation to treat the patient's eye, and imaging optics for focusing the laser radiation onto the cornea of the patient's eye. The imaging optics allow a detection of a reflection of radiation, which is emitted onto the cornea of the patient's eye with the imaging optics and is at least partly reflected by the cornea of the patient's eye back into the imaging optics at an acceptance angle χMax of at least 2.5°. Additionally a method for centering a UVL-LVC system is disclosed.

Illustrative methods and devices for providing stimulus to the eye to treat vision disorders. Systems and methods for feedback relating to the stimulus itself as well as the effect of such stimulus on the patient are provided. Various examples may include therapies for vision disorders that can progress to blindness, such as macular degeneration or other diseases and disease processes.

The invention discloses a visual impairment assistance method and system based on multi-modal sensing and low-load feedback and a medium, and relates to the field of visual impairment assistance, and the method comprises the steps: obtaining an environment image in front of a visual impairment person and original acceleration data of the visual impairment person; performing time alignment and space alignment on the environment image and the acceleration data to obtain a second color image, a second depth image and second acceleration data; performing fuzzy and dark light graph judgment based on the data; determining a barrier-free block in the second depth map; selecting the center direction of a block which is closest to the target object and free of obstacles as a target direction, and obtaining target direction information; and performing sound coding based on the target direction information to obtain spatial audio, broadcasting the spatial audio and guiding the visually impaired person to approach the target object. The visual impairment assistance effectiveness is improved by adopting a multi-modal sensing mode, meanwhile, non-visual feedback with lower load is adopted for visual impairment people, and the requirement for computing resources is lower.

Device (1) for orientation for blind and visually impaired persons, comprising a rod-shaped profile (11), at least one transmitter for emitting signals, at least one sensor (12) for receiving these signals, and at least one evaluation unit by means of which optical, haptic, acoustic and / or visual signals are generated by means of at least one signal transmitter, wherein height, lateral and / or ground distance values ​​can be determined by means of the sensor (12), characterized in that the device (1) comprises at least one actuating device (130) by means of which a fluid-like deterrent (2) can be dispensed from one or more openings (14), wherein the device (1) comprises at least one receptacle (15) for attaching or inserting a container or at least one container which is filled and / or fillable with a fluid-like deterrent (2).

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.

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.

The utility model relates to the technical field of electric saws, and discloses a multifunctional electric saw which comprises a workbench, a first hollow column is fixedly connected to the top of the workbench, a second rack is fixedly connected to the interior of the first hollow column, and a second hollow column is slidably connected to the inner wall of the first hollow column. The inner wall of the second hollow column is fixedly connected with a first connecting plate, the inner wall of the first connecting plate is rotatably connected with a gear, the gear is meshed with the second rack, the inner wall of the second hollow column is slidably connected with a third fixing column, the bottom of the third fixing column is fixedly connected with a first rack, and the first rack is meshed with the gear. According to the medical nursing bed, through cooperation of the third fixing column, the second hollow column, the second rack, the gear and the first rack, the illuminating lamp can move up and down, the effect of adjusting the height of the illuminating lamp is achieved, the problems that the height of the illuminating lamp cannot be adjusted, and consequently vision disorder and operation difficulty are caused in the operation process are solved, and the comfort degree is improved.

Methods and systems for assessing and / or treating visual disorders, such as discorder in accommodative ability and / or vergence ability, of a person are provided. Assessment and training exercises can be performed utilizing a computerized system in communication with a head-mountable display (HMD), such as a virtual or augmented reality display, which can display visual targets at various vergence and accommodative demands. Lenses, such as inverted bifocal lenses, may be used in combination with the HMD to mimic natural accommodative demand during viewing or to enable assessment and treatment of accommodation disorders. Corrective factors can be calculated and utilized for generation of visual targets to account for lens characteristics and / or interpupillary distance mismatch. Accommodation and vergence responses can be tracked during display of the visual targets at the various demands, and assessed in comparison to normalized values for assessment of vision disorders or utilized to track progress of user in treatment of a vision disorder.

Methods, kits, and material compositions for use in correcting eye conditions are disclosed. This involves a selected three-dimensional patterning of the user's corneal surface. The pattern is selected to provide an optical effect according to a given visual impairment of the user. A dispersant in liquid (aqueous solution) form containing nanoparticles is applied onto the selected three-dimensional pattern, thereby dispersing the nanoparticles in the incision areas of the pattern. The nanoparticles include biocompatible protein-based nanoparticles. The dispersant may also be used as eye drops, thereby allowing the nanoparticles to occupy etching areas on the cornea, thereby functionalizing and maintaining the visual correction effect of the pattern on the eye condition. The disclosure further provides methods and kits for ablating corneal tissue in a selected pattern by using visible-spectrum light.

The present invention relates to a photosensitive ring oscillator, its preparation method, and a flexible artificial retina. Specifically, the photosensitive ring oscillators (PROs) based on 2D semiconducting materials have been fabricated on flexible biological compatible substrates, which transduces light information into electrical pulse signals directly, propagating through the optic nerve. The output oscillating frequency varies quasi-linearly with the change of light intensity. The flexible electronic devices can be used as implantable biomimetic retina for artificial vision to recover the sight sense for sight-handicapped people.

The invention relates to a method for providing control data for an ophthalmic laser (12) of a treatment device (10) for correcting a refractive error of an eye.The procedure comprises providing subjective refractive error data and measurement data of the eye, wherein the predetermined measurement data include an ocular wavefront, a corneal wavefront, and an ocular topography; determining whether an aberration condition is present in the measurement data, whereby aberration values ​​of the ocular and corneal wavefronts are compared with an aberration threshold to test for the aberration condition; whereby correction data for correcting the refractive error are determined based on the topography if the aberration values ​​are less than or equal to the aberration threshold; and determining whether a visual acuity criterion is present in the subjective refractive error data if the aberration values ​​are greater than the aberration threshold, whereby the correction data are determined based on the topography if the visual acuity criterion is present.Finally, the procedure includes providing the tax data, which includes the determined correction data.

The ophthalmic lens is adapted to correct visual impairment and slow the progression of visual impairment in the eye of the wearer. An ophthalmic lens has a substrate, an anterior surface, and a posterior surface. The ophthalmic lens comprises at least one pattern (10) of at least one optical element (12), forming a segmented affine surface from the difference between a first wavefront produced by a theoretical lens that corrects visual impairment solely by a prescription and a second wavefront produced by the ophthalmic lens.

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.

Illustrative methods and devices for providing stimulus to the eye to treat vision disorders. Systems and methods for feedback relating to the stimulus itself as well as the effect of such stimulus on the patient are provided. Various examples may include therapies for vision disorders that can progress to blindness, such as macular degeneration or other diseases and disease processes.

A system (1) for aiding visually impaired or blind individuals in perceiving their surroundings, and comprising a central device (2) comprising a transmitter / receiver (207), a processor (211) and a feedback unit (208, 209), and a peripheral device (3) comprising an ID memory chip (308). The central device (2) is configured to: by the transmitter / receiver (207), receive and transmit data signals to and from the one or more peripheral devices (3), by the processor (211), receive input through one or more of tactile input units, acoustic input units and gesture recognition input units provided on one or more of the central device (2) itself and the one or more peripheral devices (3), upon connection to a peripheral device (3), detecting the ID memory chip (308) of the peripheral device (3) reading data contained in the ID memory chip (308) of the peripheral device (3), and control the one or more peripheral devices (3) to perform at least one action, and by the feedback unit (208, 209), provide at least one of audible, visual and tactile feedback in dependence of the action performed by the one or more peripheral devices (3). The central device (2) further comprises a connection element (203) configured for physical connection to a complementary connection element (303) provided on at least one of the one or more peripheral devices (3) such as to enable data transfer between the central device (2) and the peripheral device (3), and the connection element (203) of the central device (2) is configured to support communication with any 20 combination of SPI, I2C, I2S audio, Pulse Wave Modulation and GPIO control operations in isolation or in parallel.