10 results about "Visual Disorders" patented technology

An ophthalmic lens configured to correct and / or treat at least one condition of the eye (e.g., presbyopia, myopia, hyperopia, astigmatism, binocular vision disorders, night vision image quality, and / or visual fatigue syndrome) comprising: a base power profile; and at least one pulse selected to modify the base power profile.

A user's visual disorders can be treated via a virtual reality (VR) system, which can include a VR headset in electronic communication with a computing device. The computing device causes vision tests to be displayed on the VR headset. Using varying combinations of eye-tracking sensors, eye-tracking cameras, motion-tracking sensors, handheld devices, and microphones, the VR headset can collect data about the user as she completes the vision tests. Using the data collected by the VR headset, the computing device can evaluate the user for various visual disorders and develop a personalized vision therapy plan for the user. Optionally, advanced algorithms in the computing device dynamically alter the vision therapy plan based on the user's performance and the progression of her visual disorders.

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.

The pneumatic curtain wall comprises a connecting mechanism, a main shaft of the connecting mechanism is arranged in a cylindrical connecting base in a penetrating mode and provided with an arc-shaped groove, and a torsional spring is arranged on the main shaft in a sleeving mode so as to provide elastic damping when two connecting blades rotate relatively. The angle limiting mechanism drives clamping nails inserted into the through holes of the blades to be clamped into the arc-shaped grooves through reset springs so as to limit the rotation range. According to the pneumatic curtain wall, the problems of visual disorder caused by free rotation and noise and fatigue cracking caused by lack of buffering are effectively solved through cooperative cooperation of torsional spring damping and staple bolt limiting; the elastic damping is used for absorbing impact energy, the service life is prolonged, and it is ensured that the curtain wall presents the uniform and controlled rhythm dynamic visual effect through precise limiting.

A method for providing control data for an eye surgical laser is disclosed. A control device ascertains a lenticule geometry of a lenticule to be separated from predetermined visual disorder data of a human or animal eye. The control device ascertains a correction value for compensating for a deformation of the lenticule, which is generated by at least one contact element of the treatment apparatus. The control device ascertains a deformation geometry of the lenticule, wherein a deformation refractive power value is calculated depending on the refractive power value to be corrected and the correction value. A deformation diameter is calculated depending on a lenticule diameter and the correction value. The control device provides control data for controlling the eye surgical laser, which uses the deformation geometry for the separation of the lenticule.

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.

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.

Method for providing control data for an ophthalmic surgical laser, wherein the method comprises the following steps performed by a control device (20): - Determining refractive error data describing a degree of refractive error of a human or animal eye (40) (S1), - Determining an actual geometry of a correction area (32) of a cornea (17) of the eye (40), which describes three-dimensional dimensions of the correction area (32) of the cornea (17) (S2), - based on the determined refractive error data and the determined actual geometry: Determining a target geometry of the correction area (32) that describes a reduction component (44) of the correction area (32) with a corneal thickness reduced compared to the actual geometry, and / or a thickening component (42) with a corneal thickness increased compared to the actual geometry; wherein the determined target geometry fulfills a predefined refractive error reduction criterion that specifies suitability for reducing the degree of refractive error (S3), - Specifying the angle of rotation and the axis of rotation (31) depending on: a) a result of a comparison of the determined actual geometry with the determined target geometry, and / or b) the determined visual impairment data (S5), - based on the determined actual geometry: Determining interfaces (14, 16) of a lenticel (12) within the correction area (32), which extends at least partially over the correction area (32), wherein a portion of the lenticel (12) is designed such that, when the lenticel (12) is rotated (D) into the thickening portion (42) about the specified axis of rotation (31) passing through the cornea (17) and about the specified angle of rotation, it transforms the correction area (32) from the determined actual geometry into the determined target geometry (S4), - Defining at least one incision path as access for an instrument to rotate the lenticule (12), which extends from a predetermined incision site on an outer surface of the cornea (17) to one of the defined interfaces (14, 16) (S7), and - Providing control data that describe the determined interfaces (14, 16) for forming the lenticel (12), the at least one determined incision path, the specified axis of rotation (31) and a rotation of the lenticel (12) about the specified angle of rotation (S6).

The present application relates to ophthalmic compositions comprising levodopa, an antioxidant, and an aqueous carrier. Disclosed are compositions comprising levodopa and an antioxidant for inhibiting the development or progression of visual disorders, including visual disorders associated with diabetic retinopathy or Parkinson's disease, as well as myopia.

This invention relates to the field of ocular visual function rehabilitation and neuroelectrophysiological regulation technology. The invention discloses an ocular photostimulation matrix device, comprising: a housing; a display screen, power socket, power switch, and output socket disposed on the housing; a circuit board, a specific medical transformer, and a card reader chip assembly disposed inside the housing; and an output component connected to the output socket. This device is a non-invasive ocular rehabilitation device, breaking through the limitations of traditional vision correction and nerve repair technologies. Using 8-14Hz alpha waves as its core, it directly targets the core link of the visual nerve-central nervous system, fundamentally repairing visual conduction pathway disorders. It is non-invasive, has no usage restrictions, and is suitable for various visually impaired individuals. The device is easy to operate and can be used daily. It can induce endogenous light for preliminary fundus screening and can also address vision repair and brain nerve regulation. Supporting accessories further enhance the conditioning effect and device stability.