219results about "Othalmoscopes" patented technology

A surgically implanted ocular optical array that can be used in both therapeutic and diagnostic applications is described. A device configured to be implanted in an eye includes: an imaging system that receives visible light incoming to the eye; optical source generating circuitry that generates an optical signal based on the light received by the imaging system; and an optical phased array (OPA) that generates and projects an image onto a retina of the eye in which the device is implanted, the image being based on the optical signal generated by the optical source generating circuitry.

To provide a new technology to detect the state of a circulatory system of a patient in a non-invasive manner.SOLUTION: A data acquisition unit of a medical system acquires data from the ocular fundus of a patient using at least one optical method, and a data processing unit processes the data acquired by the data acquisition unit for generating information on the circulatory system of the patient. The data processing unit includes an inference processing part. Using a learned model constructed by machine learning using training data including second data generated by processing first data acquired from the ocular fundus using the at least one optical method, and diagnostic result data, the inference processing part performs inference processing with the data generated by processing the data acquired from the ocular fundus of the patient by the data acquisition unit as input, and the information on the circulatory system of the patient as output.SELECTED DRAWING: Figure 1

A fundus imaging device has a fixation optical system, an OCT optical system, an imaging optical system, and a controller. The controller is configured to acquire a focus evaluation value based on a slit image formed by slit-shaped illumination light on a two-dimensional imaging element of the imaging optical system in a case where an optical scanner of the imaging optical system deflects in a predetermined direction. The controller is configured to perform diopter correction control of the OCT optical system by driving a first focus adjustment unit of the OCT optical system based on the focus evaluation value.

The utility model provides a kind of Placido disc illumination and imaging device of being attached to slit lamp microscope, including Placido disc main part, lamp shell body, annular LED lighting component and optical axis adjusting mechanism;Placido disc main part is detachably installed in lamp shell body front end;Annular LED lighting component is installed in lamp shell body rear end, for providing annular illumination to Placido disc main part;Optical axis adjusting mechanism is connected with lamp shell body, and the concentricity of adjusting device relative to slit lamp optical axis;Placido disc main part includes shell, disc core and light uniform ring, and the inner wall of disc core is equipped with several concentric annular light shield band, and the light transmission gap is formed between adjacent light shield band;Light uniform ring is arranged on the light path between annular LED lighting component and disc core, so that illumination light is homogenized.The utility model is slit lamp accessory, reuse existing equipment, realize professional dry eye tear film inspection with low cost, reduce purchase cost.

The application provides an illumination device for fundus observation, comprising a contact lens, a light guide plate and an illumination light source; the contact lens is provided with an arc-shaped side and a light-in side, the arc-shaped side is used for adhering to the cornea; the light-in side is provided with the light guide plate; the light guide plate is provided with a light inlet and a light outlet; the incident light of the illumination light source is incident into the light guide plate through the light inlet, the light guide plate reflects the incident light and the reflected light is incident into the contact lens through the light outlet; the incident light passes through the arc-shaped side of the contact lens and the cornea and is incident into the eyeball to illuminate the fundus. The illumination device for fundus observation of the application sets the illumination light source on the side of the contact lens and limits and adjusts the angle of the light incident into the eyeball through the light guide plate, so that the number of the light incident into the fundus is increased, and the contact fundus imaging device can form clear and accurate fundus imaging while reducing the traditional light spot interference.

A computer-implemented method of processing repeat B-scans of an imaged region of a body part, the imaged region including an anatomical feature in a first subregion and vasculature of interest in a second subregion of the imaged region, to generate cropped B-scans for use in generating OCT angiography data which provides a representation of the vasculature of interest, the method comprising processing each B-scan of the repeat B-scans by: selecting a subset of the data elements of the B-scan such that the selected data elements are distributed along a representation of the anatomical feature in the B-scan; using the selected data elements to define a respective subregion of interest in the B-scan, which includes OCT data acquired from the second subregion containing the vasculature of interest; and cropping the B-scan to leave the subregion of interest in the B-scan.

Certain embodiments provide a method of performing ophthalmic surgical procedures. The method includes ingesting and preparing pre-operative data and intra-operative data associated with a patient's eye for further processing. In certain embodiments, the method further includes integrating the pre-operative data and intra-operative data to generate context sensitive data for further processing. The method also includes classifying and annotating the pre-operative data, the intra-operative data, and the context sensitive data. The method also includes extracting one or more actionable inferences from the pre-operative data, the intra-operative data, context sensitive data, and the classified and annotated data. The method further includes triggering, based on the one or more actionable inferences, one or more actions on an imaging system or a surgical system.

Devices, systems, and / or methods for assessing intraocular pressure of the cornea of ​​the eye using wearable sensors, and / or use of such assessments for monitoring, diagnosing, and / or treating glaucoma in patients.

The application discloses a macular-avoiding type feeding light instrument based on polarization-maintaining fiber output, and technical scheme points are as follows: the macular-avoiding type feeding light instrument comprises a feeding light source module, a polarization-maintaining fiber transmission module, a macular identification and positioning module, a central control module, a light adjusting module, a display interaction module and a power supply module; the central control module is electrically connected with the feeding light source module, the polarization-maintaining fiber transmission module, the macular identification and positioning module, the light adjusting module, the display interaction module and the power supply module; the feeding light source module is used for generating low-intensity red feeding light; the polarization-maintaining fiber transmission module is used for transmitting the feeding light and maintaining the polarization state of the light stable; and the macular identification and positioning module is used for collecting fundus images, identifying the position of a macular area and tracking in real time. The application creatively realizes the synergistic fusion of the polarization-maintaining fiber and the macular avoidance, and completely solves the pain point of macular misirradiation.

A method comprising: receiving a set of eye images of a cohort of subjects, and a plurality of datapoints with respect to each of the subjects in the cohort, wherein at least some of the subjects in the cohort of are associated with a diagnosis of a specific eye condition; extracting, with respect to each of the subjects, a set of features representing the images and the datapoints associated with the subject; at a training stage, training a machine learning model on a training dataset comprising: (i) all of the sets of features, and (ii) labels indicating a diagnosis of an eye condition associated with each of the subjects; and at an inference stage, applying the trained machine learning model to a target dataset comprising one or more images and associated datapoints with respect to a target subject, to output a diagnosis of an eye condition in the target subject.

The application discloses a light adjustment monitoring method based on retinal blood flow velocity and related equipment, and belongs to the technical field of data processing. Wherein, the method comprises: acquiring baseline blood flow parameters of a user, the baseline blood flow parameters comprising: average flow velocity, baseline blood vessel density and baseline perfusion density; the baseline blood flow parameters are extracted from a baseline retinal blood flow image of the user, the baseline retinal blood flow image being collected before outputting adjustment light to the retina of the user; during the process of outputting adjustment light to the retina of the user, real-time retinal blood flow images of the user are repeatedly collected at a preset time interval; real-time blood flow parameters are extracted from the real-time retinal blood flow images; a blood flow adjustment degree value is determined according to the real-time blood flow parameters and the baseline blood flow parameters; and the output power of the adjustment light is adjusted according to the blood flow adjustment degree value.

To provide an ophthalmologic apparatus and an illumination control method enabling more accurate observation of a subject eye by a simple operation, by suppressing occurrence of a shadow on eyelids, while avoiding shading of illumination light of background illumination by an illumination system.SOLUTION: An ophthalmologic apparatus includes an illumination system supported rotatably around a subject eye, while directing a direction of radiation of first illumination light toward the subject eye, an observation system provided on the opposite side to an arrangement position of the subject eye with respect to the illumination system, and light emission parts for background illumination provided in the observation system, on lower positions than the subject eye. In the ophthalmologic apparatus, the light emitting parts are dimmed and controlled according to a relative position between the illumination system and the light emitting parts.SELECTED DRAWING: Figure 10

There are provided an ophthalmic device capable of examining on a subject eye by an examination head without bringing the examination head closer to a nose of a subject and a method for operating the ophthalmic device. The ophthalmic device includes a displacement mechanism (an XZ movement mechanism (16), a Y movement mechanism (18), a swing rotation mechanism (20), and a tilt rotation mechanism (80)) configured to displace an examination head (66) with respect to a subject eye (E), a nose photographing controlling unit (41) configured to cause at least two cameras (34a) to photograph a nose of a subject from a plurality of directions different from each other, a nose position detecting unit (42) configured to detect a position of the nose (N) based on respective photographed images of the nose (N) from the cameras (34a), a tilting angle determining unit (43) configured to determine a tilting angle (θ) of an axis (TA) of tilt with respect to a reference axis (VA) based on a result of detection by the nose position detecting unit (42), and a drive controlling unit (46) configured to drive the displacement mechanism to displace the examination head (22) to an examination position for the subject eye (E) along the axis (TA) of tilt with the tilting angle (θ) determined by the tilting angle determining unit (43).

This fundus imaging device includes two or more curved mirrors, an illumination optical system, an image sensor, and a control unit. The illumination optical system irradiates the fundus of an eye under examination with slit-shaped illumination light via the two or more curved mirrors, and illuminates the fundus while moving the illuminated region. The image sensor can be disposed at a fundus-conjugate position, which is substantially optically conjugate with the fundus, and receives return light from the eye under examination. The control unit controls at least the illumination optical system. The longitudinal direction of an image formed by the illumination light on the fundus is substantially parallel to a plane that includes two or more focal points of the two or more curved mirrors. The control unit controls the illumination optical system so that the abovementioned image moves in a direction intersecting the longitudinal direction on the fundus.

A method and system for generating a geographic atrophy (GA) lesion segmentation mask corresponding to GA lesions in a retina is disclosed herein. In some embodiments, a set of fundus autofluorescence (FAF) images of a retina having one or more geographic atrophy (GA) lesions and one or both of a set of infrared (IR) images of the retina or a set of optical coherence tomography (OCT) images of the retina may be used to generate the GA lesion segmentation mask including one or more GA lesion segments corresponding to the one or more GA lesions in the retina. In some instances, a neural network may be used to generate the GA lesion segmentation mask.

Optical image measuring device with: an optical system comprising a scanner configured to change the irradiation position of signal light on an object, a focus position change section configured to change the focus position of the signal light, and a numerical aperture change section configured to change a numerical aperture and configured to detect interference light from light returning from the object of the corresponding signal light and reference light; an image generation section configured to produce a cross-sectional image based on the acquisition results of multiple interference light beams corresponding to multiple irradiation positions of the signal light; a control device configured to control the optical system to repeatedly shine the signal light onto the multiple irradiation positions while the focus position is changed; and a section for generating a composite cross-sectional image, configured to produce a composite cross-sectional image based on two or more cross-sectional images generated by the image generation section based on results of repeated irradiation of the signal light; a layer thickness calculation section configured to analyze a cross-sectional image obtained before repeated irradiation with the signal light in order to calculate the thickness of the specified layer; a section for determining the numerical aperture, configured to determine a value of the numerical aperture such that the imaging depth becomes smaller than the thickness of the specified layer; and a repetition determination section configured to determine the number of repetitions during repeated irradiation of the signal light based on the imaging depth; the control device controls the section for changing the numerical aperture in order to set the numerical aperture to the specified value.

Various embodiments are disclosed of universal actuators for an imaging device or probe. The universal actuator may move the imaging device or probe in one or more of a horizontal direction, vertical direction, rotational directions (e.g., axial rotation and pivoting motions). In some embodiments, the universal actuator is configured to mount to a conventional slit lamp microscope to aid in visualizing the face and or eye(s) of a subject. In other embodiments, the universal actuator is hand-held and is used to scan an imaging probe (e.g., ultrasound probe) over the surface of an eye. The universal actuator may also be removable or separable from a base that is mounted to a slit lamp microscope allowing for both instrument-based scanning and manual scanning via the hand-held device. The imaging device or imaging probe is used to obtain 2D image data. In some embodiments this 2D data is then used to generate 3D images of, for example, the face or eye(s).

An ophthalmic device (1) of the present invention has an optical head (2) including a light projection optical system (21) that projects light onto a subject eye (E), a light reception optical system (22) that receives light from the subject eye (E), and a fixation lamp (23) for guiding a line-of-sight direction of the subject eye (E), and a turning drive unit that turns the optical head (2) in a horizontal direction while maintaining positional relationships between the light projection optical system (21), the light reception optical system (22), and the fixation lamp (23). The turning drive unit is composed of a rotational drive unit (4) that rotates the optical head (2) in the horizontal direction and a horizontal drive unit (3) that moves the optical head (2) in the horizontal direction.

Systems and methods for determining the health status of a retina of a subject. An optical coherence tomography (OCT) volume image of a retina of a subject may be received. A health indication output is generated, via a deep learning model, using the OCT volume image. The health indication output indicates a level of association between the OCT volume image and a selected health status category for the retina. A map output for the deep learning model is generated using a saliency mapping algorithm, generating a map output for the deep learning model using a saliency mapping algorithm. The map output indicates a level of contribution of a set of regions in the OCT volume image to the health indication output generated by the deep learning model.

Ophthalmic observation device which features: an optical photography system comprising a first focusing lens and performing photography to capture a front image of an eye; an optical measuring system that includes a second focusing lens and performs optical coherence tomography (OCT) to capture a cross-sectional image of the eye; an optical path coupler that couples the optical paths of the optical photography system and the optical measuring system at one point on the eye side of the first and second focusing lenses; a first drive to move the first focusing lens along an optical axis of the optical photography system; a second drive for moving the second focusing lens along an optical axis of the optical measuring system; and a control system that individually controls the first and second drives, wherein the optical measurement system OCT performs the acquisition of a cross-sectional image of the fundus of the eye, and which further comprises: an optical projection system that projects a focusing index onto the fundus as an indication of a focus state of the optical photography system on the fundus; and an intensity reference element that references the intensity of an interference signal detected by the optical measurement system, wherein After focusing the optical photography system and focusing the optical measuring system based on the focusing index, the control system controls the second drive based on the intensity referenced by the intensity reference element. wherein the controller acquires multiple interference signals corresponding to multiple positions of the second focusing lens by controlling the optical measuring system while controlling the second drive to move the second focusing lens, has a fourth target position reference part which obtains a target position of the second focusing lens based on intensities of the multiple interference signals obtained by the intensity reference part, and controls the second drive to move the second focusing lens to the obtained target position.

A system includes an ophthalmic microscope configured to capture video of an ophthalmic treatment. A computer system receives the video and a treatment plan for the ophthalmic treatment and processes the video and the treatment plan using a machine learning model to divide the video into a plurality of video segments, each video segment of the plurality of video segments corresponding to a procedure of a plurality of procedures included in the ophthalmic treatment. The computer system may process the video using a machine learning model to label each frame of a plurality of frames of the video with an identifier of a procedure of a plurality of procedures included in the ophthalmic treatment represented in each frame and at least one of (a) select information for display on the display device according to the identifier and (b) control operation of surgical equipment according to the identifier.

An ophthalmic apparatus, a control method of an ophthalmic apparatus, and a storage medium are provided. The ophthalmic apparatus includes an examination unit configured to examine an eye under examination, a drive unit configured to drive the examination unit, and a control unit configured to start control of the examination unit and the drive unit based on an examination protocol in response to a predetermined condition, the examination protocol defining a series of control procedures for performing a plurality of examinations, the series of control procedures including an alignment adjustment for aligning the examination unit with the eye under examination, wherein the control unit is configured to display, on a display unit, results of the plurality of examinations and display information for accepting an instruction to retry a portion of the plurality of examinations.

The present disclosure relates to methods and systems for quantifying the vascular pattern using ocular imaging that shows vessel profiles for the detection, prevention, and treatment of diabetic retinopathy and other related ocular vascular diseases.

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.

A device for predicting and diagnosing risk by cardiovascular disease type according to an embodiment comprises at least one processor, wherein the at least one processor predicts risk by cardiovascular disease type using a diagnostic model. The diagnostic model includes a first model that analyzes an inputted fundus image to predict cardiovascular risk; and a second model that receives a cardiovascular risk score predicted by the first model and disease type-specific factors to predict risk by cardiovascular disease type. Wherein the at least one processor is characterized by providing diagnostic information based on the cardiovascular risk predicted by the first model and the risk by cardiovascular disease type predicted by the second model.

Laser-Speckle Contrast imaging apparatus configured to assess and quantify motion associated with an object and, in a specific case of an eye - retinal vascular anatomy and hemodynamics and generate substantially contrast-free maps of retinal blood flow over a wide field-of-view at up to 590 fps and under short exposure durations (> 50µs), is applicable for diagnosis, study, and management of neurodegenerative conditions (i.e. mild cognitive impairment and Alzheimer's disease) and systemic cardiovascular diseases (i.e. athero- and arteriosclerosis, coronary artery occlusion, and hypertension). The apparatus employs a) a set of apertures substantially blocking light, delivered from a source of light to an illumination arm of the apparatus, from impinging onto an axial point of the front surface of the lens of the illumination arm, and b) polarization gating between the illumination and light-collecting arms of the apparatus. In one implementation, the apparatus is configured to allow for irradiation of the object with an optical field a degree of coherence and / or spectral content of which are varied delivered through the same optical train including the set of apertures.

A system and method for visually augmenting an original image of an eye includes a visualization module. A controller is configured to convert an output of the visualization module into a first cloud of pixels in a first color space and map the first cloud of pixels to a second cloud of pixels in a second color space. The method includes identifying at least one selected region in the second color space. The controller is configured to move the selected region from an original location to a modified location in the second color space. The second cloud of pixels is updated to obtain a modified second cloud of pixels, which is transformed into a third cloud of pixels in the first color space. An augmented image is formed based in part on the modified second cloud of pixels, and the augmented image provides selective visual augmentation of the selected region without affecting contrast of a remainder of the original image.