35 results about "Peripheral retina" patented technology

An eye-wear borne electromagnetic radiation refractive therapy system can comprise an electromagnetic radiation source comprising a ring of LEDs that directs one of its on axis or off axis electromagnetic radiation to a desired peripheral retina area of a wearer's eye; a power source for powering the LEDs, an antenna for receiving signals and a processor for controlling the LEDs; wherein the electromagnetic radiation source includes spectral characteristics similar to outdoor light.

A system for imaging of the central and peripheral retina, includes one of a concave mirror and an elliptical mirror having an axis and being configured to rotate around the axis and a scanner configured to using a spectral domain optical coherence tomography system to obtain a non-contact wide angle OCT-image of a large portion of the central and peripheral retina.

A device (20) for use in the screening, documentation, and diagnosis of various diseases of the eye (1). Several images (60) are taken substantially simultaneously, with the images (60) preferably taken in a non-coplanar orientation relative to each other (60). The images (60) represent multiple different zones (11) of the retina (10) taken using different optical imaging pathways (200). Image (60) distortion is minimized, because the individual optical imaging pathways (200) need to account for significantly less differential curvature of the object plane than a wide-field optical pathway that attempts to capture both the central and peripheral retina (10) in a single image. A single composite wide field image (61) can be generated, by merging the overlapping fields of multiple, concurrently captured images (60) taken at different angles.

A system and method for treating and preventing loss of visual acuity. The system comprises a vision correcting lens, such as a contact lens, having a material with a regular pattern of orientation of polarizable molecular bonds, so as to create a birefringent effect. Off-axis light rays are refracted through the contact lens so as to focus in front of the retina, whereas on-axis light rays pass through the contact lens without refraction, such that their focal point on the fovea is unaltered. In an exemplary embodiment, a contact lens of the present invention is capable of independently altering the refractive state of the eye in relation to fovea and peripheral retina so as to simultaneously correcting visual acuity while minimizing the signal for axial growth and hence myopic progression.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing an enhanced toric lens which redirects and/or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the intraocular lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

Optical device (1) for modifying the optics of the eye in its peripheral retina as prophylaxis of the progression of myopia, that it consists in a lens in which its inferior nasal quadrant (2) modifies the strength in a progressive and controlled manner from the center to the outer zone of the lens. The rest of the quadrants (3) of device (1) have a configuration of a graduated crystal or flat crystal, depending, respectively, on whether the user has some visual defect that requires optical correction or lacks said defect. The lens can be either an optical lens, a contact lens or electro-optical systems.

The invention discloses multifunctional glasses integrating myopia prevention, beautifying, memory improvement and massage functions. The multifunctional glasses comprise a shell and a control device arranged in the shell, the shell consists of a front glasses shell and a back glasses shell, and a high-illumination light supplementing device and red light transillumination devices which are connected with the control device electrically are arranged in the back glasses shell. The multifunctional glasses integrating the myopia prevention, beautifying, memory improvement and massage functions has the advantages that the multifunctional glasses have the eyeball high-illumination light supplementing device, front peripheral retina defocusing lenses, eye movement guide devices, a periocular skin red light transillumination function and the like and eye care functions such as a visual patch function, vibratory massage and hot compress.

The invention relates to a large-field-of-view aberration optical objective measurement method based on a Hartmann-Shack wave front aberration measuring system (HSWS). The method adopts a method of combining internal sighting mark and beam splitter off-axis watching to objectively measure aberration at corresponding field-of-view of multiple horizontal and vertical intersected meridians, the measurement process of peripheral aberration is based on eyeball rotation of a subject, and an aberration instrument and wave front are kept parallel in the process. The environmental illumination and measurement accuracy are calibrated, and an aberration calculation method is improved to express and calculate peripheral aberration with a Zernike polynomial. The method can realize measurement of off-axis large-field-of-view high-order aberration, and provides a reliable and convenient measurement means to understand composition and distribution laws of off-axis large-field-of-view high-order aberration of human eyes.

A system for imaging of the central and peripheral retina of an eye, including one of a concave mirror and an elliptical mirror configured to focus a beam of light toward a primary focal point located inside pupil of the eye, and a scanner configured to obtain a non-contact wide angle optical coherence tomography-image of a portion of the central and peripheral retina, the scanner having a probe beam configured to rotate about the primary focal point between a first position and a second position, thereby permitting scanning light inside the eye to cover a predetermined peripheral field, so as to record a field of up to 200 degrees of a portion of the central and peripheral retina, thus creating a two dimensional or three dimensional image of the field.

The invention discloses a retinal angiomatous proliferation (RAP) and/or retinal capillary hemangioma (RCH) mouse model; the model is a gene knockout mouse obtained by crossing a Cre mouse, a Rb floxed mouse and a Vhl floxed mouse.A large number of new blood vessels exist on the peripheral retina of an Rb/Vhl double knockout (DKO) mouse model, the blood vessels penetrate an entire layer, and a dense capillary network is formed and the normal layered structure of a retinal three-layer capillary network is lost.The phenotypes are more severe than the retinal neovascularization in an RAP model inthe prior art; some new blood vessels still exist on the peripheral retina of Rb/P107/Vhl triple knockout (TKO) mice, but significant phase III RAP and RCH lesions are formed under the retina.

The invention provides a multi-area contact lens with a property of controlling progression of myopia and an application method of the multi-area contact lens. The multi-area contact lens comprises alens body, wherein the lens body comprises a myopia correction area, a myopia treatment area and a connection area for fixing wearing of the contact lens, the myopia correction area is an area capableof completely correcting myopia vision, and the myopia treatment area is an area capable of generating myopic defocusing along the peripheral retina. The multi-area contact lens with the property ofcontrolling the progression of the myopia and the application method of the multi-area contact lens have the advantages that the front surface of the lens body is provided with rotationally symmetrical multi-area aspheric surface/ spherical surface profiles so that the use of the aspheric surface can be avoided, thereby reducing the processing difficulty, surface profile parameters of all areas onthe front surface of the lens body can be adjusted flexibly, and by adjusting the size of the area and size of additional refractive power of all the areas of the lens body, the correction ability ofthe central vision and the size of provided peripheral myopic defocusing can be effectively adjusted, thereby being capable of providing personalized customization according to different individual needs.

The invention relates to a method and system for recognizing lattice degeneration and holes in wide area fundus images based on deep learning. The method comprises the steps that the wide area fundusimages are input into a convolutional neural network, and whether peripheral retina lattice degeneration or holes exist in the wide area fundus images or not is judged; and when it is judged that theperipheral retina lattice degeneration or the holes exist in the wide area fundus images, a saliency map is adopted to position the lattice degeneration position or hole position in the wide area fundus images. The method and the system can assist an ophthalmologist in reading the wide area fundus images of patients more accurately, more conveniently and more quickly.

The invention discloses a hard corneal contact lens for high hyperopia correction which comprises a lens body, the lens body comprises a central optical area, a peripheral optical area and an edge arc area which are integrally formed, the central optical area is located in the central area of the lens body, the peripheral optical area is arranged around the central optical area, and the edge arc area is arranged around the peripheral optical area; wherein the central optical area is a positive lens conforming to eyeball refraction brightness of a patient, the peripheral optical area is a negative lens, the outer surface of the positive lens is a spherical surface or an aspheric surface, the outer surface of the negative lens is an aspheric surface, and the outer surface of the lens body is an aspheric surface. By wearing the hard cornea contact lens, a high-hyperopia child patient can obtain clear and stable vision, amblyopia is prevented, and the amblyopia cure rate is increased; when the glasses are worn, hyperopia defocus can be formed on the peripheral retina, so that the development of the eye axis of a high hyperopia child patient is promoted, the amblyopia treatment time is shortened, and the lens removal rate is increased.