97 results about "Retinal imaging" patented technology

An incisional instrument and method of use for creating accurate, reproducible surgical incisions. An exemplary embodiment includes an incisional instrument configured for attachment to a patient's eye and for use performing arcuate limbal relaxing incisions (LRIs). The incisional instrument is made up of two coaxial, interconnecting pieces: a docking piece and a cutting piece. The docking piece includes a suction mechanism and is configured for being secured to a patient's eye just outside the corneal limbus. The cutting piece is configured to fit flush within the docking piece and includes cutting blades and one or more handles for rotating the cutting piece relative to the docking piece. When assembled, the cutting blades extend into a patient's eye a desired LRI depth. An embodiment further includes an arcuate guide template with stoppers for providing lateral, arcuate stops for precise cuts in the desired LRI locations. An LRI method includes the steps of utilizing the incisional instrument in an ophthalmologic LRI procedure.

An apparatus for obtaining an image of a retina is described herein. The apparatus includes an optical relay that defines an optical path and is configured to relay an image of the iris along the optical path to a pupil, a shutter is disposed at the pupil and configured to define at least a first shutter aperture for control of light transmission through the pupil position, a tube lens disposed to direct light from the shutter aperture to an image sensor, and a prismatic input port disposed between the shutter and the tube lens and configured to combine, onto the optical path, light from the relay with light conveyed along a second light path that is orthogonal to the optical path.

The invention discloses a spectacle lens and a design method thereof. The spectacle lens comprises a lens body, wherein the lens body comprises a first surface arranged towards the retina of a human eye; the lens body is provided with an optical center which coincides with the geometric center of the first surface. The first surface comprises a retina refraction area, a retina periphery refraction area and a refraction correction area which are sequentially arranged from the optical center to the edge of the lens body; the retinal diopter, the peripheral retina diopter, and the diopter correction region are disposed around the optical center, respectively, and cooperate together to intervene in retinal imaging quality within the pupil range. According to the retina peripheral characteristics of the wearer, the micro-structure lens more adaptive to the retina of the human eye is designed, the retina peripheral diopter of the human eye can be more accurately obtained, and the progress of ametropia is efficiently intervened according to the characteristics of the retina peripheral diopter of the human eye.

The invention provides a fundus OCT imaging diopter adaptive matching method and device, and relates to the technical field of retina imaging, and the method comprises the following steps: detecting pupil positions in real time, automatically tracking pupils, and controlling a reference arm motor and a sample arm motor to move to initial positions; a reference arm motor is controlled to move, meanwhile, a retina structure in an OCT image is detected through a deep learning algorithm, and the eye axis length of the testee is automatically matched; the reference arm motor and the sample arm motor are controlled to move synchronously, the retina focusing position is found by calculating the composite information entropy of the OCT image, and the diopter of the testee is automatically compensated; and detecting and adjusting the position of the retina in the image by using a deep learning algorithm to cover retina imaging with a large view. According to the method, the OCT imaging device is automatically controlled, an automatic solution is provided for eye ground screening of people of multiple age groups and various ametropia groups, the overall image quality collected by OCT is improved, and the operation simplicity and the imaging speed are remarkably improved.

The present application provides a kind of orthokeratology lens, including base arc area, and from the periphery of the base arc area outwardly continuously formed reverse arc area, adaptation arc area and peripheral arc area, the space defined between the reverse arc area and cornea is periodically changed in circumferential direction, with cyclically arranged small space and large space. Thus the negative pressure given to the cornea is also different, leading to the off-focus ring formed in the periphery of the cornea is unevenly distributed, compared with traditional orthokeratology lens, more high-order aberrations are generated in retinal imaging, and the effect of delaying axial elongation is better.

The application discloses a diopter-adjustable and real-time retina imaging detection simulation eye, comprising: an emulated cornea, an emulated lens and an adjustable vitreous structure arranged in sequence along an optical axis; the adjustable vitreous structure comprises: a vitreous cavity filled with an emulated vitreous, a curved retina arranged at the end of the vitreous cavity, and a micrometer adjustment system for driving the curved retina to move forward and backward along the optical axis; the foveal region of the curved retina is integrated with an attenuation module and an imaging module, which are used for collecting a light spot image on the foveal region in real time; the simulation eye further comprises an analysis module electrically connected with the imaging module, and the analysis module is configured to process the collected light spot image to extract optical parameters on the curved retina.

A method implemented by one or more computer devices includes receiving fundus autofluorescence (FAF) image data for a retina of a subject. The FAF image data includes a first FAF image associated with a first point in time. An image input for a deep learning system is generated using the FAF image data. A predicted growth output for a geographic atrophy (GA) lesion in the retina is generated using the image input via the deep learning system. The predicted growth output is associated with at least one future time point after the first time point.

An ophthalmic apparatus comprises a visible light illumination channel, which illuminates a retina of an eye of a patient under examination by visible light. A near-infrared illumination channel illuminates the retina of the eye of the patient under examination by near-infrared light. An imaging channel receives light from the retina of the eye illuminated by the visible light and / or the near-infrared light. A target channel outputs fixation image content to a patient whose eye is under the examination for fixation of a gaze direction of the patient. An alignment arrangement illuminates the anterior part of the eye and reflections therefrom are received by two of a fundus camera sensor and a first and second pupil camera sensors. A data processing unit determines an optimal positional alignment of the eye for imaging a fundus of the eye by a fundus camera sensor based on still image and / or video capture of the anterior part of the eye.

Optical coherence tomography (OCT) data can be analyzed with neural networks trained on OCT data and known clinical outcomes to make more accurate predictions about the development and progression of retinal diseases, central nervous system disorders, and other conditions. The methods take 2D or 3D OCT data derived from different light source configurations and analyze it with neural networks that are trained on OCT images correlated with known clinical outcomes to identify intensity distributions or patterns indicative of different retina conditions. The methods have greater predictive power than traditional OCT analysis because the invention recognizes that subclinical physical changes affect how light interacts with the tissue matter of the retina, and these intensity changes in the image can be distinguishable by a neural network that has been trained on imaging data of retinas.

A system, apparatus, and method of operation for focusing a retinal image are described herein. In an embodiment, the retinal imaging system comprises an eyepiece lens assembly; a structured light assembly configured to emit structured illumination light through the eyepiece lens assembly for receipt by an eye positioned adjacent to the eyepiece lens assembly and opposite the structured light assembly; a retinal image sensor optically coupled to the eyepiece lens assembly, wherein the retinal image sensor is positioned to receive the structured illumination light from the eye and is configured obtain a retinal image of a retina of the eye. In an embodiment, the method includes emitting structured illumination light through the eyepiece lens assembly; generating a retinal image based on the structured illumination light received from the retina of the eye; and measuring an edge strength of the structured illumination light from the retinal image.

Disclosed are non-mydriatic UWF retinal imaging laser scanners capable of comprehensive imaging the entire retina with lightweight, ergonomic, and cost-effective formfactor. The scanners include an ultrawide field of view lens systems (eyepiece and optical relay), interchangeable rigid contact lens, and all-fiber polarization rejection design. Also disclosed is an augmented reality spatial display.

The present invention relates to a water-soluble compound for the detection of beta-amyloid, and a production method thereof. The compound according to the present invention has excellent water-soluble properties, and thus can provide a water-soluble formulation for the detection of beta-amyloid. Accordingly, there is an effect that the compound can be useful as a composition for the detection of beta-amyloid through retinal imaging.

The application belongs to the technical field of vision care, and provides a kind of intelligent glasses, glasses box and vision training method, intelligent glasses include: frame mechanism;Lens mechanism, it includes left mirror unit, right mirror unit and pupil distance adjusting unit, left mirror unit, right mirror unit are connected with pupil distance adjusting unit to realize lens pupil distance adjusting function;Drive mechanism is connected with pupil distance adjusting unit to realize zoom vision training function.The intelligent glasses provided by the application is simple in appearance, light in quality, can replace daily ordinary corrective glasses for use, can improve the user's retinal imaging quality by adjusting the lens pupil distance, reduce the eye fatigue, at the same time, the lens can be driven to reciprocate to realize zoom vision training function, effectively exercise ciliary muscle, improve the accommodation ability and acuity of ciliary muscle, play the effect of preventing and treating myopia and amblyopia, the vibration is weak, avoid the phenomenon of dizziness and discomfort produced in the training process, improve the user experience and vision training effect of wearer.

The invention discloses an intelligent gathering and scattering ball training device. Relates to the technical field of visual training instruments. The multiple connecting rods are arranged at intervals in the horizontal direction, the multiple connecting rods and the lower jaw support are located on the same horizontal line, and the multiple connecting rods are sequentially provided with red balls, yellow balls and blue balls in the horizontal direction; and the movement guiding assembly is arranged on the lifting table, and the multiple connecting rods are all arranged on the movement guiding assembly. According to the intelligent converging-diverging ball training device, on the basis of visual physiology and the optical imaging principle, natural light spectral characteristics and a retina imaging mechanism are creatively applied, and the imaging characteristics of human eye retinas to light with different wavelengths are simulated by accurately regulating and controlling spectral composition and spatial distribution of red, yellow and blue LED balls; and the training accuracy, stability and comfort are improved.

A retinal camera and related methods of use are described. In an example, the retinal camera comprises a lens tube; a face rest shaped to steady a face of a user when the face is placed against the face rest; a light baffle positioned to conceal internal components of the retinal imaging system, wherein the light baffle defines a slit; and an alignment indicator positioned to be visible through the slit when an eye of the face is within an initial alignment zone of the retinal imaging system. In an example, the face rest defines a horizontal axis, and wherein the slit is parallel to the horizontal axis. In an example, the slit is positioned to align with a line between two eyes of the user when the face is placed against the face rest.

A low-cost line-field parallel swept-source optical coherence tomography (OCT) system suitable for home monitoring of diabetic retinopathy and other disease states including macular degeneration is disclosed. The system includes a tunable laser coupled to an interferometer and a line-scan detector, and a single-board computer configured to control laser tuning and acquire interference data. A fixation target display is positioned to project an image to a patient's eye, and is moved in discrete steps orthogonal to the projected OCT scanline to acquire multiple B-scans at different retinal positions without mechanical beam scanning. The fixation target movement enables cross-sectional or volumetric retinal imaging using a single fixed OCT scanline, reducing system complexity and cost. The single-board computer processes line-field interferograms into depth-resolved profiles, displays images, and controls fixation target positioning. The system enables early detection and monitoring of diabetic macular edema and other retinal complications in a compact, patient-operable configuration.

A compact confocal scanning laser ophthalmoscope comprising a MEMS scan mirror with a compact scan head, for use with small animal subjects. The scan head is connected to the source, detector and control electronics by flexible optical and electrical umbilicals and includes a zoom lens to provide both a wide field of view and high resolution imaging of the retina using a range of imaging modalities.

The invention discloses a spectacle lens and glasses, and relates to the technical field of myopia prevention and control. The spectacle lens comprises a lens body and a grid lattice structure, the lens body is provided with a central optical area arranged in the optical center of the lens body and a peripheral optical area arranged around the central optical area, and the grid lattice structure is arranged on the surface of the lens body and at least partially arranged in the peripheral optical area. The grid lattice structure comprises a plurality of discretely-distributed structural units and linear connecting parts for connecting every two adjacent structural units, the structural units are point-shaped protrusions or point-shaped grooves and used for forming nodes of the grid lattice structure, and the linear connecting parts are linear protrusions or linear grooves and used for connecting the adjacent structural units to form a grid layout. The grid lattice structure can generate a continuous and uniform scattering effect on light passing through the peripheral optical area, and the imaging contrast ratio of retina imaging can be effectively reduced, so that the growth of an eye axis is slowed down, and the development of myopia is effectively controlled.

Systems and relative method of monitoring the state of a subject's retinal disease employ remote based OCT imaging of a subject's retina. A method includes receiving optical coherence tomography (OCT) image data of a retina of a subject for each of a series of OCT imaging sessions of the retina. The OCT image data of the retina is processed to determine a series of measured extent values. Each of the one or more measured extent values is indicative of a respective extent of the retinal disease.

The utility model discloses an optical lens for myopia control and myopia glasses, comprising a front surface and a rear surface which are correspondingly arranged, at least one of the front surface and the rear surface is formed by overlapping a waveform surface topological structure with a base plane contour, the wave-shaped surface topological structure forms a smooth and continuous wave-shaped structure on the whole optical lens along the center of the optical lens to the radial direction. According to the utility model, a smoothly changing positive degree signal is formed on the surface of the optical lens, mutation in retina imaging is avoided, and on the basis of correcting myopia, the optical lens provides positive degree and provides a stable defocus signal in a peripheral visual field area, so that the growth of the retina can be stably inhibited, and the purpose of slowing down the myopia progress is achieved.

The RetinAI invention provides a novel integrated system designed for home-based early screening and detection of ocular tumors and retinal diseases, leveraging advanced artificial intelligence and optical imaging technology. The system comprises a wearable headset with precisely aligned imaging sensors and dual-mode illumination sources for capturing extraocular images to detect leukocoria and intraocular retinal images for direct visualization of tumors, eliminating the need for pharmacological pupil dilation. On-device deep learning models, including representative object detectors and convolutional neural networks, provide real-time diagnostic outputs. Clinical validations demonstrate RetinAI's capability to detect leukocoria as small as 1 mm in diameter and identify a broad spectrum of retinal diseases, confirming its significant potential to enhance ocular health screening, particularly in underserved and resource-limited settings. The cost-effective, user-friendly, and portable nature of the RetinAI system positions it as an essential tool for improving access to ophthalmic care globally.

The invention discloses a point diffusion scattering lens film layer, and belongs to the technical field of lens film layers, the film layer is attached to the surface of a common single-light spectacle lens, and a plurality of point diffusion scattering microstructures are arranged on the film layer. The point diffusion scattering microstructure is innovatively introduced, the retina imaging contrast ratio is reduced, meanwhile, the visual experience and the application range are optimized, a more efficient and flexible solution is provided for myopia prevention and control, the film layer is easy to replace, the lens does not need to be replaced, and the expenditure cost is reduced.

To obtain a high-quality image. **Solution**: The retinal imaging system includes an eyepiece lens assembly, an image sensor adapted to obtain a retinal image of an eye through the eyepiece lens assembly, and a controller communicatively coupled to the image sensor. The controller, when executed, causes the retinal imaging system to obtain a point of interest (POI) related to the eye or an indicator of the laterality of the eye, select an eye box position for the eye box of the retinal imaging system based at least in part on the POI or the laterality of the eye, and obtain a retinal image of the eye when the eye is determined to be positioned within the eye box. The eye box corresponds to a boundary region within a space defined with respect to the eyepiece lens assembly.

Various implementations disclosed herein include devices, systems, and methods that track an eye characteristic (e.g., gaze direction, eye orientation, etc.). For example, an example process may include producing light that reflects off a retina of an eye, receiving an image of a portion of the retina from an image sensor, the image corresponding to a plurality of reflections of the light scattered from the retina of the eye, obtaining a representation of the eye corresponding to a first accommodative state, the representation representing at least some of the portion of the retina, and tracking an eye characteristic based on a comparison of the image of the portion of the retina with the representation of the eye.

A method of wavelength selection and a communication apparatus is applied to fields such as optical communication, optical switching, digital central networks, microwave photonics, liquid crystal antennas, optical phased arrays, beam forming, beam scanning, laser radars, laser projection, laser televisions, holographic display, adaptive optics, laser beam shaping, laser processing, ultrafast laser pulse shaping, laser active imaging, optical tomography scanning, and retinal imaging. When port switching occurs in a WSS apparatus, only image data of a changed local image of an LCoS image is updated within each time interval that is shorter than duration of one image frame, and a driving voltage for a pixel on the LCoS display screen is refreshed based on a priority.

The invention belongs to the technical field of ophthalmic optics, and relates to a microstructure myopia prevention and control lens and a design method thereof.The microstructure myopia prevention and control lens comprises a mother lens and a negative microlens array, and the mother lens comprises a central bright vision area and a regulation and control area; the negative micro lens array is arranged on the surface of the regulation and control area of the mother lens and comprises a plurality of even-order aspheric negative lenses arranged in an array mode, and the main curvature of each even-order aspheric negative lens changes from a negative value to a positive value from the center to the edge. According to the micro-structure lens with the even-order aspheric negative lens with the main curvature changing from the negative value to the positive value from the center to the edge, the light deflection angle of most of the area surrounding the center on the micro-structure can be increased, so that the aberration of medium-aperture and small-aperture light passing through the micro-structure is increased; the inhibition effect of the lens on the retina imaging contrast in a low-frequency band is further improved, the retina imaging contrast is reduced to be maximized under the condition of the same microstructure rise, and therefore the optimal effect of inhibiting the myopia progress is achieved.

Disclosed are example embodiments of a system of retinal three-dimensional (3D) imaging. The system of retinal 3D imaging includes an image sensor within a light path and a reimaging corrective optics module within the light path. The system of retinal 3D imaging also includes an objective lens in the light path and a baffle-and-illumination module in the light path. In an aspect, the reimaging corrective optics module is in front of the image sensor, the objective lens is in front of the reimaging corrective optics module, and the baffle-and-illumination module is between the objective lens and the reimaging corrective optics module.

Some implementations disclosed herein provide systems, methods (200) and devices (10) that use a retinal imaging technique to assess a user's eye (45) accommodation (i.e., focusing) during use of an electronic device (10), e.g., in real-time. One or more light sources (322a-d, 1022a-d) produce one or more illuminated spots (320, 420, 520, 620) on the retina that are detectable via a sensor (324, 1024). The size and shape of the spots (320, 420, 520, 620) depend on the eye accommodation / focusing, and thus are used to identify accommodation / focusing changes or measure the eye's accommodation / focusing. Eye accommodation can be determined in real-time while a user is viewing, interacting with, or otherwise experiencing electronic content via the electronic device.

A technique and apparatus for performing a visual field test on an eye includes sequentially presenting visual stimuli to the eye on a display. A first fixation target is presented on display in a first position offset from a center of the display, such as while presenting first visual stimuli on the display for measuring a visual function sensitivity of the eye contemporaneously with presenting the first fixation target. A response of the eye to the first visual stimuli is registered. A second fixation target is presented on the display in a second position offset from the center of the display, wherein the second position is different than the first position, such as while presenting second visual stimuli on the display for measuring a visual function sensitivity of the eye contemporaneously with presenting the second fixation target. A response of the eye to the second visual stimuli is registered.

This invention discloses a dual-optical-path whole-eye screening system and imaging method based on transient pulse illumination, belonging to the field of optical imaging and medical device technology. The system includes an illumination module, a beam splitting module, a fundus imaging optical path, an anterior segment imaging optical path, and an intelligent focusing algorithm module. The fundus imaging optical path utilizes a 4f relay lens group and a displacement compensation lens group to achieve retinal imaging; the anterior segment imaging optical path uses the red reflection principle to perform backlight imaging of the lens and anterior segment. The system, in conjunction with transient pulse illumination, under non-mydriatic semi-dark field conditions, utilizes the time difference of the human eye's pupillary constriction response to simultaneously acquire clear fundus and anterior segment images in a single exposure. This invention also proposes a dual-spectrum precise focusing algorithm based on a spatiotemporal hybrid attention mechanism. It extracts spatial features through a residual network and fuses temporal features using a long short-term memory network. Even with unknown individual refractive index distributions, it accurately predicts the optimal focus position for visible light based on near-infrared image sequences, solving the imaging quality problem caused by longitudinal chromatic aberration and reducing screening costs and operational complexity.