854results about "Othalmoscopes" patented technology

An optical system is configured to guide light from a light source to a first target and a second target, and to guide first reflected light from the first target and second reflected light from the second target to an image sensor. The optical system includes a first optical element having a conical surface. An intermediate image is formed between the first optical element and each of the first target and the second target. The first reflected light and the second reflected light are guided to an imaging plane of the image sensor such that at least part of the first reflected light and part of the second reflected light overlap each other on the imaging plane.

To provide a new technology to measure at least characteristics of both eyes with a high degree of precision while saving costs and space.SOLUTION: An ophthalmologic apparatus includes an objective lens, an OCT optical system, an optical axis switch member, a control part, and an intraocular parameter calculation part. The OCT optical system projects measurement light onto a left eye to be examined arranged on a first measurement optical axis or onto a right eye to be examined arranged on a second measurement optical axis through the objective lens, and detects interference light between return light of the measurement light from the left eye to be examined or the right eye to be examined and reference light through a reference light passage. The optical axis switch member switches an optical axis of the OCT optical system so as to roughly match the first measurement optical axis or the second measurement optical axis. The control part controls the optical axis switch member. The intraocular parameter calculation part calculates the intraocular parameter of the left eye to be examined or the right eye to be examined on the basis of a result of the detection of interference light obtained in a state where the optical axis of the OCT optical system is switched so as to roughly match either the first measurement optical axis or the second measurement optical axis.SELECTED DRAWING: Figure 1

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.

A fundus imaging apparatus includes two or more curved mirrors, an illumination optical system, and an image sensor. The illumination optical system includes a slit with an opening configured to be disposed at a fundus conjugate position. Here, the fundus conjugate position is substantially conjugate optically to a fundus of an eye to be examined. The illumination optical system is configured to irradiate slit-shaped illumination light, that is generated by irradiating light from a light source onto the slit, onto the fundus through the two or more curved mirrors. The image sensor is configured to be disposed at the fundus conjugate position and to receive returning light from the eye to be examined. At least one of both ends of the opening in a longitudinal direction is displaced in a shorter direction of the opening with reference to the longitudinal direction passing through a center of the opening.

An image processing method performed by a processor includes: a step of acquiring a fundus image in which choroid blood vessels are visualized; a step of extracting choroid arteries in the fundus image acquired in the acquiring step by performing image processing on the fundus image; and a step of generating a fundus image in which the choroid arteries extracted in the extracting step are highlighted.

A method for enhancing digital images during a microsurgery, e.g., an eye surgery, includes collecting digital images of target anatomy using a digital camera as the target anatomy is illuminated by warm white light. The method includes identifying, via a processor in communication with the digital camera, a predetermined stage of the microsurgery. Within the images, the processor digitally isolates a first pixel region, e.g., a pupil pixel region, from a second pixel region, e.g., an iris pixel region, and adjusts a characteristic of constituent pixels thereof. The method, possibly recorded as instructions in a computer-readable medium, may be used to enhance a red reflex at predetermined stages of an eye surgery. A system includes a lighting source for emitting warm white light having a color temperature of less than about 4000°K, the camera, and the processor.

The invention provides a fundus camera system integrated with adaptive optics and a correction method, and relates to the technical field of ophthalmology imaging. The fundus camera system comprises a beacon light source, an imaging light source and an imaging sensor; the device comprises a wavefront sensor, a wavefront correction device and a control module, and the wavefront correction device comprises a focusing lens group and a deformable reflector; the focusing lens group and the deformable reflector are arranged in the same light path from the beacon light source to human eyes and from the human eyes to the wavefront sensor; moreover, the control module executes a two-step closed-loop control strategy of first focusing and second correction: firstly, based on a first measurement result of the wavefront sensor, the focusing lens group is driven to move so as to compensate low-order aberration; and after the focusing is completed, the deformable reflector is driven to deform based on the subsequent measurement result of the wavefront sensor so as to compensate the high-order aberration in a closed-loop manner. On the basis of inheriting the advantage of rapid focusing in the prior art, the self-adaptive optical technology is further integrated, so that the limitation of high-order aberration on resolution is solved.

An eyeshade structure for bilirubin detection includes a body, a first detection module, and a second detection module. The body includes a bottom plate and a side wall. The side wall is connected to the bottom plate and forms an accommodating space with the bottom plate. The first detection module is arranged on the bottom plate. The second detection module is arranged on the bottom plate and is adjacent to the first detection module. The first detection module and the second detection module each include a circuit board, a light-emitting element, an inner photographing element, and an outer photographing element. The circuit board is connected to the bottom plate. The light-emitting element is electrically connected to the circuit board. The inner photographing element is electrically connected to the circuit board. The outer photographing element is electrically connected to the circuit board.

An ophthalmic apparatus arranged to determine a distance between the ophthalmic apparatus and an eye, the ophthalmic apparatus comprising: an illumination device which illuminates the eye; an imaging device which acquires an image of the eye, wherein the illumination device and the imaging device are arranged such that the image of the eye comprises a specular highlight from the illumination device having a spatial distribution in the image which varies with the distance between the ophthalmic apparatus and the eye; and a processor arranged to: process the image to determine a value of an indicator which is indicative of a property of the spatial distribution; and use the determined value of the indicator and a mapping which maps values of the indicator to corresponding values of the distance between the ophthalmic apparatus and the eye to determine the distance between the ophthalmic apparatus and the eye.

A system, method and / or device for obtaining interferometric measurements using multiple light sources to image, in sequence, a location on a sample, where the light sources have different spectral wavelength bands, and adjacent spectral wavelength bands overlap each other. The respective interferometric measurements are combined mathematically to define a composite interferometric measurement for the location on the sample. The composite interferometric measurement has a greater axial resolution than that of any of the individual light sources.

A chamber houses a camera, light sources, and an onboard computer. The camera may be an infrared camera. Infrared light source fibers feed into a circumferential adapter ring to illuminate the inside of the eye (retina). The adapter ring contains a central opening through which it fits around the camera lens. The adapter ring contains openings along the circumference for infrared fibers to provide a light source. Another light source is provided for illumination of the external surface of the eye adjacent to the camera.

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

Described herein is a fundus image analysis system including a pre-segmentation image quality assessment module for receiving a fundus input image, and performing overall retinal image quality assessment and measurement quality assessment on the fundus input image; segmentation module for segmenting retinal vessel, artery, vein and optic disc to produce segmentation maps from the fundus input image; and a measurement module for computing region specific measurements within a standard zone within the fundus input image, and global physical or geometric measures of the whole fundus input image.

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 discloses a fundus camera convenient to adjust a chin rest, which comprises a base, the upper surface of the base is fixedly connected with two supporting columns, the top ends of the two supporting columns are fixedly connected with a supporting plate together, the upper surface of the supporting plate is fixedly provided with a fundus camera body, the upper surface of the base is provided with a groove, and the upper surface of the groove is provided with a clamping groove. And a positive and negative rotation motor is fixedly mounted on the inner side wall of the groove. According to the device, firstly, the electric push rod is arranged, the electric push rod can drive the cheek supporting frame body to ascend and descend, so that a worker can conveniently adjust the height of the cheek supporting frame body, and then the positive and negative rotation motor is arranged and can drive the threaded rod to rotate; in this way, the threaded block can drive the connecting block and the sliding plate to slide front and back through rotation of the threaded rod, the electric push rod and the chin rest body can be driven to slide front and back through the sliding plate, and therefore a worker can conveniently adjust the front-back position of the chin rest body.

An ophthalmic apparatus includes an objective lens, an illumination optical system, an optical scanner, a light receiving optical system, and a pupil division member. The illumination optical system includes an illumination diaphragm with one or more openings formed at positions eccentric to an optical axis, and is configured to irradiate slit-shaped illumination light. The optical scanner is configured to deflect the illumination light to guide the deflected illumination light to the eye to be examined via the objective lens. The light receiving optical system is configured to guide returning light, that passes through the objective lens, of the illumination light from the eye to be examined to an image sensor. The pupil division member includes a photographic diaphragm with one or more openings formed at positions eccentric to an optical axis, and is configured to spatially separate optical paths of the illumination optical system and the light receiving optical system.

The present invention relates to a method for diagnosing and / or prognosticating a disease associated with a changed structure in the posterior eye, the method comprising analyzing an image of the posterior eye obtained by a trans-scleral optical imaging (TOI) device for a structure changed with respect to a reference, wherein the changed structure indicates the presence and / or progression of a disease in a subject.

To provide a more efficient system / method for eye motion tracking.SOLUTION: A system and method for eye motion tracking. An anchor point and a plurality of auxiliary points are selected from the reference image. Individual live images in the sequence of images are then searched for a match between the anchor point and the ancillary point. First, an anchor point is found, and then the search for individual auxiliary points is limited to a search window defined by the known distance and / or orientation of the auxiliary point to be searched relative to the anchor point.SELECTED DRAWING: Figure 4

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.

Aspects of the present disclosure provide improved techniques to assist imaging and / or measuring a subject's eye that are suitable for use in an imaging and / or measuring apparatus operated by the subject, even in the absence of a clinician or technician, thereby improving access to medical grade imaging and / or measurement. Some aspects relate to techniques for receiving user input and capturing a medical grade image and / or measurement of a subject's eye responsive to receiving the user input. Some aspects relate to techniques for providing visual feedback to a user of an imaging and / or measuring apparatus indicating a location of a subject's eye in a field of view of the imaging and / or measuring apparatus. Some aspects relate to techniques for selectively illuminating a first portion of a subject's eye with illumination light and capturing an image of the first portion of the subject's eye.

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.

An analysis processing apparatus includes an acquisition unit, an analyzer, and a display controller. The acquisition unit is configured to acquire two or more pieces of motion contrast data of a cross-section at interscan time intervals different from each other. The two or more pieces of motion contrast data are acquired by repeatedly performing B-scans three or more times on the same cross-section in an object to be measured. The analyzer is configured to perform analysis processing for obtaining a time variation of a motion contrast intensity in the cross-section based on the two or more pieces of motion contrast data. The display controller is configured to cause an image representing the time variation obtained by performing the analysis processing to be displayed on a display means.

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.

The slit lamp comprises a shell, a light source assembly, a slit assembly, an optical filter assembly, a diffractive optical element and a reflector assembly, wherein the light source assembly, the slit assembly, the optical filter assembly, the diffractive optical element and the reflector assembly are installed in the shell. Wherein the optical filter assembly comprises a plurality of optical filters and a driving unit, and the driving unit is used for driving one optical filter to move into an optical path; the reflecting mirror assembly comprises a reflecting mirror and a reflecting mirror seat, and the reflecting mirror seat is rotationally connected with the shell; according to the slit lamp, the rotatable optical filter and the diffractive optical element are arranged, so that the slit effect is slender, a better lighting effect is achieved, and the accuracy of an operation is improved.

An ophthalmic device and an ophthalmic device control program are provided that are capable of appropriately acquiring three-dimensional information about the anterior segment of the eye while stabilizing the fixation of the subject's eye. [Solution] The fixation target presenting optical system presents a fixation target to the subject's eye. The cross-sectional imaging optical system captures cross-sectional images of the anterior segment by receiving return light from the anterior segment that has been optically sectioned by the imaging light. The moving unit moves an optical unit including the fixation target presenting optical system and the cross-sectional imaging optical system relative to the subject's eye. The control unit can perform a three-dimensional information acquisition process to acquire three-dimensional information about the anterior segment by capturing cross-sectional images of multiple locations on the anterior segment while moving the optical unit and scanning the imaging light. When performing the three-dimensional information acquisition process, the control unit positions the fixation target within a limited area centered on the focal position of the entire lens system of the fixation target presenting optical system, regardless of the refractive power of the subject's eye.

In certain embodiments, an ophthalmic surgical laser system for imaging and treating an eye floater includes an SLO subsystem, a treatment laser subsystem, a scanner, optical elements, and a computer. The SLO subsystem provides an SLO laser beam with an SLO focal point, and the treatment laser subsystem provides a treatment laser beam with a treatment focal point that spatially coincides with the SLO focal point. The scanner scans the SLO laser beam across a scan region and directs the treatment laser beam to the xy-location of the scan region. The optical elements aim the SLO laser beam and the treatment laser beam at substantially the same point of the scan region. The computer receives an SLO image of the floater, determines an xy-location of the floater, and instructs the treatment laser subsystem to direct the treatment laser beam towards the xy-location and the z-scan location of the floater.

An anterior segment image with a similar appearance to that obtained with a slit lamp microscope is generated by an anterior segment scan using a rotational scanning method. [Solution] An exemplary embodiment of the ophthalmic apparatus, a shineproof imaging system, is configured to satisfy the shineproof conditions and generates data by imaging the anterior segment of the eye under examination. The illumination system illuminates the surface of the shineproof imaging system with slit light generated using a non-monochromatic visible light source. The rotation mechanism rotates the shineproof imaging system and the illumination system around a predetermined axis. The control unit controls the shineproof imaging system, the illumination system, and the rotation mechanism to cause the shineproof imaging system to generate datasets corresponding to multiple rotation positions.

Systems and methods for determining one or more recommendations for management of wellbeing of an individual are disclosed. An indication of risk of chronic kidney disease (CKD) is determined by a deep learning model based on one or more fundus images. Recommendations for management of the individual's wellbeing are based at least in part on the determined indication of risk of CKD.

A method of standardizing a fundus image on the basis of an artery and a vein includes receiving, by an image processing device, an initial fundus image, determining, by the image processing device, reference regions in the initial fundus image, and correcting, by the image processing device, color of the initial fundus image on the basis of a difference between color values of a first reference region and a second reference region among the reference regions.

A ophthalmologic surgical system configured to enable scanning and imaging of the anatomical and physiological characteristics of the patient's eye via the image processing subsystem; to provide for the production of a surgical plan based on imaging and eye data received from the image processing subsystem; and to provide for accurate surgical guidance that is based on the surgical plans produced by the planning subsystem where such surgical guidance is timely corrected and / or adapted to adjust for movement of the patient's eye in the course of the surgical procedure.