11 results about "Impaired Vision" patented technology

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.

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).

Provided is a visual field estimation apparatus using a machine learning model that has been machine-trained so that, with respect to a plurality of eyes to be examined, at least one of image information of retina and three-dimensional structure information of retina is acquired at each of a plurality of time points, visual field related information relating to a visual field of the eye to be examined is acquired at a corresponding time point, at least one of the image information of the retina and the three-dimensional structure information of the retina regarding each of the eyes to be examined is input to the machine learning model as input information, visual field change information representing change of the visual field and obtained based on the visual field related information at the plurality of time points with regard to the corresponding eye to be examine is used as training information, and visual field change information estimated on the basis of the input information is output from the machine learning model.

This invention relates to a UV laser-based system, specifically a UV laser-based system (100) for correcting impaired vision in a patient's eye (10), a UVL-LVC system (100). The UVL-LVC system (100) comprises: a UV laser source (102) designed to emit laser radiation to treat the patient's eye (10); and an imaging optics (124) for focusing the laser radiation onto the cornea (12) of the patient's eye (10), wherein the imaging optics (124) is designed such that it detects the reflection (126) of radiation at a receiving angle χMαχ of at least 2.5°, the radiation being incident on the cornea (12) of the patient's eye (10) through the imaging optics (124) and at least partially reflected from the cornea (12) of the patient's eye (10). The invention also relates to a method for centering the UVL-LVC system (100).

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.

The present disclosure discloses a composition for improving eyesight, and relates to the technical field of food. The composition comprises Plukenetia volubilis oil, citri reticulatae pericarpium oil, and lutein ester. The composition can be prepared into a powder, a tablet, a capsule, a granule, an oral preparation, and a dripping pill. The composition can effectively relieve asthenopia, prevent impaired vision, and improve eyesight, and has a good market prospect.

The invention relates to the technical field of police helmets, and particularly discloses a police protective helmet which comprises a helmet body, and quick release assemblies are symmetrically arranged on the two sides of the outer wall of the helmet body; the quick release assembly comprises a mounting cover fixed with the helmet body; the helmet body comprises a lens mounting area, and a sliding groove which is located above the lens mounting area and is communicated with the lens mounting area is formed in the helmet body; arc-shaped flexible pads are fixed to the two sides of the inner wall of the helmet body, motors are fixed to the gaps between the two flexible pads and the helmet body, the output ends of the motors penetrate through the sliding grooves, a first rotating shaft is fixed to the outer wall of the helmet body, and the first rotating shaft is rotationally connected with the inner wall of the mounting cover; rotating rings I rotationally connected with the rotating shafts I and rotating rings II fixedly connected with the rotating shafts I are sequentially arranged on the outer walls of the rotating shafts I; the problems that lenses of an existing protective helmet are inconvenient to replace, and sight is affected in rainy days are solved.

To provide a device for preventing the lowering of eyesight and asthenopia of a user by using a display device such as a portable terminal.SOLUTION: A device for preventing the lowering of eyesight of the present invention is provided in a display device having a front camera provided on a surface side on which a display screen is present. The device for preventing the lowering of eyesight includes: a congestion state measuring device that measures a congestion state of eyes of a user who views the display screen of the display device; an alert unit that issues a predetermined alert; and an alert instruction determination unit that compares the congestion state measured by the congestion state measuring device with an alert congestion state stored in advance and instructs the alert unit to issue an alert when it is determined that a predetermined condition is satisfied.SELECTED DRAWING: Figure 2

To provide an electronic magnifier that enables weak-sighted people, people with impaired vision and elderly people to enjoy reading, painting, checking newspaper articles, or the like with ease or easily check the contents of letters, postcards, contracts, or the like.SOLUTION: An electronic magnifier which displays a camera video of an object placed on a table captured by a camera on a display includes a control unit for performing image processing of the camera video and outputting the processed camera video to the display, and a camera holding mechanism for holding the camera. The camera holding mechanism and the camera are arranged out of a line of sight between an observer and the display.SELECTED DRAWING: Figure 4

To provide a device for preventing the lowering of eyesight and asthenopia of a user by using a display device such as a portable terminal.SOLUTION: A device for preventing the lowering of eyesight of the present invention is provided in a display device having a front camera provided on a surface side on which a display screen is present. The device for preventing the lowering of eyesight includes: a congestion state measuring device that measures a congestion state of eyes of a user who views the display screen of the display device; an alert unit that issues a predetermined alert; and an alert instruction determination unit that compares the congestion state measured by the congestion state measuring device with an alert congestion state stored in advance and instructs the alert unit to issue an alert when it is determined that a predetermined condition is satisfied.SELECTED DRAWING: Figure 2