38 results about "Ophthalmic microscope" patented technology

A system for automatically focusing ("autofocusing") a microscope during an inner limiting membrane (ILM) peeling maneuver is configured to output low-coherence infrared (IR) light toward the eye during the maneuver. The system includes an interferometer that senses an axial distance between the microscope and ILM and outputs distance signals indicative of the sensed axial distance. An electronic control unit (ECU) is in communication with motor-driven lenses of the microscope and with an IR light source of the interferometer. Execution of the instructions causes the ECU to receive the distance signals from the interferometer. In response to the distance signals, the ECU transmits a focus control signal to the lens(es) to thereby resolve the ILM with a desired depth-of-field. The ECU automatically adjusts a focus level of the microscope on the ILM to accommodate for respiration-related movements of the patient.

A digital ocular system for use with image sensors and an ophthalmic microscope includes a housing that connects to the microscope and defines a housing cavity, a first lens having a first optical axis, and a second lens having a second optical axis parallel to the first optical axis. A first micro-display is positioned within the housing cavity to present a first image from the image sensors. The first micro-display has a first center axis arranged at a predetermined angle with respect to the first optical axis. A second micro-display presents a second image from the image sensors. The second micro-display includes a second center axis arranged at the predetermined angle with respect to the second optical axis, such that the first and second micro-displays are horizontally decentered relative to the first and second optical axes, respectively.

In certain embodiments, an ophthalmic surgical system for viewing an eye includes an ophthalmic microscope and a laser device. The ophthalmic microscope receives light reflected or scattered backwards from within the vitreous of the eye in order to provide an image of an object within the vitreous. The ophthalmic microscope includes a slit illumination source (which includes a light source and an optical element), a spectral filter, and oculars. The slit illumination source illuminates the eye with light, where the light source provides the light, and the optical element directs the light into the eye. The spectral filter filters out red spectral components of the light. The oculars receive the light from the eye in order to provide the image of the object. The laser device generates a laser beam to direct towards the object within the eye.

A visualization system for use with an ophthalmic microscope having a pair of image sensors includes a first pair and multiple second pairs of interchangeable eyepieces each having a corresponding magnification level and field-of-view (FOV), and digital binoculars in communication with the image sensors. The digital binoculars include a housing configured to connect to the ophthalmic microscope and defining a housing cavity, a pair of annular bases connected to the housing configured to separately engage the first and multiple second pairs of interchangeable eyepieces to provide the FOV, and surrounding a corresponding center axis or designated position, and a pair of micro displays positioned within the housing cavity. Each respective one of the micro displays is arranged on the corresponding center axis or designated position.

The present disclosure provides an ophthalmic viewing system for visualizing structures on and in an eye of a medical patient. Certain embodiments provide an ophthalmic viewing system comprising: an ophthalmic microscope; an anterior chamber gonoscopy device configured to relay an image of an inner periphery of the patient's eye to an ophthalmic microscope; and a robotic arm configured to hold the anterior chamber gonoscopy device in position relative to the ophthalmic microscope and the patient's eye to relay an image of the inner perimeter of the patient's eye to the ophthalmic microscope for observation by the user.

A visualization system for use with an ophthalmic microscope having a pair of image sensors includes a first pair and multiple second pairs of interchangeable eyepieces each having a corresponding magnification level and field-of-view (FOV), and digital binoculars in communication with the image sensors. The digital binoculars include a housing configured to connect to the ophthalmic microscope and defining a housing cavity, a pair of annular bases connected to the housing configured to separately engage the first and multiple second pairs of interchangeable eyepieces to provide the FOV, and surrounding a corresponding center axis or designated position, and a pair of micro displays positioned within the housing cavity. Each respective one of the micro displays is arranged on the corresponding center axis or designated position.

Certain embodiments provide an arm assembly (120) for a wide angle viewing system (100) for an ophthalmic microscope. The arm assembly (120) comprises an articulated arm (130) configured to be coupled to a reduction lens module (110), and a loupe lens turret (140) coupled to the articulated arm (130). The loupe lens turret (140) comprises a body (141), a base (150) rotationally coupled to the body (141), and a spring (200) coupled to the body (141) and the base (150). The base (150) is configured to receive a removable loupe lens assembly (160, 170). The spring (200) is configured to a first spring force and a second spring force. The first spring force rotates the base (150) in a first direction and holds the base (150) against the body (141) in a first position. The second spring force rotates the base (150) in a second direction and holds the base (150) against the body (141) in a second position.

A system includes an ophthalmic microscope including a camera and a controller coupled to the camera. The controller configured to receive at least one image from the camera, the at least one image including a representation of an eye of a patient. The controller segments the at least one image using a machine learning model to obtain at least one segmented image including one or more labels of one or more Purkinje images represented in the at least one image. The controller produces an output according to the at least one segmented image. The output may be an estimate location of the visual axis of the eye. The output may include an estimate of an offset between the visual axis and a center of an IOL implanted in the eye. The segmented image may further label the IOL and possibly one or more items of anatomy of the eye.

In certain embodiments, an ophthalmic laser system includes a laser device, an ophthalmic microscope, a z-direction sensor, and a controller. The laser device directs a laser beam towards a target within an eye. The ophthalmic microscope receives light from a focal point within the eye to provide an image of an object at the focal point. The z-direction sensor determines the z-position corresponding to the focal point of the ophthalmic microscope. The controller determines a position Z0, the z-position where the focal point of the ophthalmic microscope is at the retina of the eye; determines a position Z, the z-position where the focal point of the ophthalmic microscope is at the target within the eye; calculates a target-to-retina distance ΔZ according to a difference between the position Z and the position Z0; and calculates a radiant exposure He at the retina according to the target-to-retina distance ΔZ.

A system includes an ophthalmic microscope including a camera and a controller coupled to the camera. The controller configured to receive at least one image from the camera, the at least one image including a representation of an eye of a patient. The controller segments the at least one image using a machine learning model to obtain at least one segmented image including one or more labels of one or more Purkinje images represented in the at least one image. The controller produces an output according to the at least one segmented image. The output may be an estimate location of the visual axis of the eye. The output may include an estimate of an offset between the visual axis and a center of an IOL implanted in the eye. The segmented image may further label the IOL and possibly one or more items of anatomy of the eye.

A tunable eye model includes a housing having an inner chamber and at least one aperture adjacent to an anterior portion of the inner chamber. A lens is at least partially disposed in the at least one aperture, and the lens has a variable focal length. An optical target of the tunable eye model is disposed over a posterior portion of the inner chamber. The optical target is configured to facilitate evaluation of a characteristic of an ophthalmic microscope when viewed through the lens with the ophthalmic microscope.

A system includes an ophthalmic microscope including first and second illuminator optics configured to emit light onto an eye of a patient. The system further includes a controller coupled to the first and second illuminator optics. The controller is configured to operate in a first mode in which light emitted by the first illuminator optics and light emitted by the second illuminator optics has a first configuration. The controller is configured to operate in a second mode in which the light emitted by the first illuminator optics and the light emitted by the second illuminator optics are configured to enhance visibility of one or more Purkinje images projected onto the eye of the patient by the first illuminator optics relative to the first configuration. Registration of the optical axis of the eye, robotic alignment, and autofocusing may also be performed using Purkinje images.

This disclosure provides an ophthalmic observation system for visualizing the surface and internal structure of a medical patient's eye. A particular embodiment provides an ophthalmic observation system including an ophthalmic microscope, a gonioscopy device configured to relay images of the inner periphery of the patient's eye to the ophthalmic microscope, and a robotic arm configured to hold the gonioscopy device in a predetermined position relative to the ophthalmic microscope and the patient's eye, and to relay images of the inner periphery of the patient's eye to the ophthalmic microscope for the user to view.

An ophthalmic surgical system (100) includes an ophthalmic microscope (102) including a first camera (204a) and a second camera (204b). A controller (214) coupled to the first camera and the second camera receives a current pair of images including a current representations of a retina (300) of a patient; obtains a current three- dimensional representation of the retina from the current pair of images; determines deformation of the retina by evaluating the current three-dimensional representation relative to a reference representation of the retina; determines (414) stress on the retina according to the deformation; and outputs (418) guidance according to the stress. Stress may be determined using FEM and may use velocity and acceleration of the deformation. Guidance may include a graphical representation of the stress or a vector along which force should be exerted. Deformation may be detected (412) using a mesh (312) projected (406) onto the retina.

The ophthalmologic microscope has an illumination device for projecting light onto an eye to be observed and a microscope device with a camera to view the eye. The illumination device generates pulsed light. The light is pulsed at least at twice the frame rate of the camera to reduce flicker. The illumination device uses an array of micro-mirrors as spatial light modulator, and the mirrors are controlled for a balanced deflection over the frame cycles, which allows to increase the service life of the microscope.

The utility model discloses an ophthalmic microscope lens cleaner which comprises a barrel body which is divided into an upper containing groove and a lower containing groove by a partition plate, the lower end of the barrel body can be detachably sleeved to one end of a lens barrel of an ophthalmic microscope lens, and the outer wall of the lens barrel is clamped by the inner wall of the lower containing groove; the rotating disc is movably arranged in the upper accommodating groove; the connecting disc is movably arranged in the lower containing groove, the connecting disc and the rotating disc are connected through a rotating shaft, and the rotating shaft longitudinally penetrates through the partition plate and is used for allowing the rotating disc to rotate to drive the connecting disc to rotate in the circumferential direction and allowing the rotating disc and the connecting disc to jointly move in the longitudinal direction; and the cleaning disc is detachably mounted on the lower end surface of the connecting disc and is used for cleaning the mirror surface of the convex lens of the ophthalmic microscope lens. According to the technical scheme, cleaning is convenient, and on the premise that operation continuity is not affected, instant cleaning of the microscope lens can be achieved, so that continuous and clear imaging of the lens is guaranteed, and more reliable guarantee is provided for ophthalmologic operations.

Certain embodiments provide an arm assembly (120) for a wide angle viewing system (100) for an ophthalmic microscope. The arm assembly (120) comprises an articulated arm (130) configured to be coupled to a reduction lens module (110), and a loupe lens turret (140) coupled to the articulated arm (130). The loupe lens turret (140) comprises a body (141) including a first magnet (144), and a base (150) including a second magnet (154). The base (150) is rotationally coupled to the body (141), and configured to receive a removable loupe lens assembly (160, 170). The first magnet (144) and the second magnet (154) are configured to generate a first repulsive magnetic force and a second repulsive magnetic force. The first repulsive magnetic force rotates the base (150) in a first direction and holds the base (150) against the body (141) in a first position. The second repulsive magnetic force rotates the base (150) in a second direction and holds the base (141) against the body in a second position.

An ophthalmic microscope has an illumination device (9) for projecting light onto an eye (10) to be observed and a microscope device (8) with a camera (16) for viewing the eye. The illumination device (9) generates pulsed light. The light is pulsed at at least twice the camera frame rate to reduce flicker. The illumination device (9) uses columns of a micromirror array as spatial light modulators (24) and controls the mirrors to achieve balanced deflection within a frame period, which increases the service life of the microscope.

An ophthalmic surgical system includes an ophthalmic microscope including a first camera and a second camera. A controller coupled to the first camera and the second camera receives a current pair of images including a current representations of a retina of a patient; obtains a current three-dimensional representation of the retina from the current pair of images; determines deformation of the retina by evaluating the current three-dimensional representation relative to a reference representation of the retina; determines stress on the retina according to the deformation; and outputs guidance according to the stress. Stress may be determined using FEM and may use velocity and acceleration of the deformation. Guidance may include a graphical representation of the stress or a vector along which force should be exerted. Deformation may be detected using a mesh projected onto the retina.

Certain embodiments provide an arm assembly for a wide angle viewing system for an ophthalmic microscope. The arm assembly comprises an articulated arm configured to be coupled to a reduction lens module, and a loupe lens turret coupled to the articulated arm. The loupe lens turret comprises a body including a first magnet, and a base including a second magnet. The base is rotationally coupled to the body, and configured to receive a removable loupe lens assembly. The first magnet and the second magnet are configured to generate a first repulsive magnetic force and a second repulsive magnetic force. The first repulsive magnetic force rotates the base in a first direction and holds the base against the body in a first position. The second repulsive magnetic force rotates the base in a second direction and holds the base against the body in a second position.

A system includes an ophthalmic microscope including first and second illuminator optics configured to emit light onto an eye of a patient. The system further includes a controller coupled to the first and second illuminator optics. The controller is configured to operate in a first mode in which light emitted by the first illuminator optics and light emitted by the second illuminator optics has a first configuration. The controller is configured to operate in a second mode in which the light emitted by the first illuminator optics and the light emitted by the second illuminator optics are configured to enhance visibility of one or more Purkinje images projected onto the eye of the patient by the first illuminator optics relative to the first configuration. Registration of the optical axis of the eye, robotic alignment, and autofocusing may also be performed using Purkinje images.

Certain embodiments provide an arm assembly for a wide angle viewing system for an ophthalmic microscope. The arm assembly comprises an articulated arm configured to be coupled to a reduction lens module, and a loupe lens turret coupled to the articulated arm. The loupe lens turret comprises a body, a base rotationally coupled to the body, and a spring coupled to the body and the base. The base is configured to receive a removable loupe lens assembly. The spring is configured to a first spring force and a second spring force. The first spring force rotates the base in a first direction and holds the base against the body in a first position. The second spring force rotates the base in a second direction and holds the base against the body in a second position.

An ophthalmic microscope comprises a first assembly with a base (1) and a stage (2), a second assembly with a pivot arm (3) and a microscope device (8), and a third assembly with a pivot arm (4) and a light source (9). The assemblies are pivotable to each other at a hinge (30). An electric control motor (38a, 38b, 38c) and a position sensor (46a, 46b) are incorporated in the hinge (30). A brake controller (50) of the microscope is adapted to interrupt the manual mutual displacement of the assemblies in response to a signal from the position sensor (46a, 46b) in order to assist a user in correctly aligning the assemblies.

The invention belongs to the field of ophthalmologic operation equipment, and particularly relates to an intraoperative real-time navigation fundus blood vessel imaging system, which comprises an excitation light source module, the excitation light source module comprises an FFA excitation light source and an ICGA excitation light source, and the FFA excitation light source and the ICGA excitation light source alternately output excitation light through the same optical fiber coupler by adopting a time division multiplexing technology, the high-proportion light splitting design of the invisible light splitting prism (BS1) 95: 5 is adopted, the visual field light loss rate of the eyepiece is controlled to be smaller than or equal to 3% and far lower than a brightness change threshold value (smaller than 5%) which can be perceived by an operator according to actual measurement, conventional white light illumination is basically not affected in the operation process, the operator can continuously obtain a bright and clear operation visual field, operation errors caused by insufficient light are avoided, and the operation efficiency is improved. And the operation safety is obviously improved. After the light path of the microscope is modified, the working distance of the objective lens is kept to be greater than or equal to 150mm, which completely conforms to the working distance range of 125-175 mm of a standard ophthalmic microscope. And the operation space of the surgical instrument is not limited.

A digital ocular system for use with image sensors and an ophthalmic microscope includes a housing that connects to the microscope and defines a housing cavity, a first lens having a first optical axis, and a second lens having a second optical axis parallel to the first optical axis. A first micro-display is positioned within the housing cavity to present a first image from the image sensors. The first micro-display has a first center axis arranged at a predetermined angle with respect to the first optical axis. A second micro-display presents a second image from the image sensors. The second micro-display includes a second center axis arranged at the predetermined angle with respect to the second optical axis, such that the first and second micro-displays are horizontally decentered relative to the first and second optical axes, respectively.

The present invention relates to a single and / or dual laser delivery system attached to an existing ophthalmic operating microscope, comprising of a single and / or dual wavelength laser unit [1]; and a delivery system [5]. The laser unit [1] comprises of a green laser module 532 nm [3] and a yellow laser module 577 nm [4] along with an aiming beam [7] 635 nm. The delivery system comprises of a right-angle prism [5A]: X and Y Galvo assembly [5B] and a focusing lens assembly [5C]. The laser unit passes through a fiber optic cable [6] gets reflected using the right angle prism, gets deflected by the Galvo assembly, enters the focusing lens assembly and gets reflected by a folding mirror [5D] and focused on human eye capsule. The system converges and focuses the laser wavelengths in line with the aiming beam to create a circular pattern to accomplish a pre-measured Capsulorhexis.

A system for automatically focusing (“autofocusing”) a microscope during an inner limiting membrane (ILM) peeling maneuver is configured to output low-coherence infrared (IR) light toward the eye during the maneuver. The system includes an interferometer that senses an axial distance between the microscope and ILM and outputs distance signals indicative of the sensed axial distance. An electronic control unit (ECU) is in communication with motor-driven lenses of the microscope and with an IR light source of the interferometer. Execution of the instructions causes the ECU to receive the distance signals from the interferometer. In response to the distance signals, the ECU transmits a focus control signal to the lens(es) to thereby resolve the ILM with a desired depth-of-field. The ECU automatically adjusts a focus level of the microscope on the ILM to accommodate for respiration-related movements of the patient.

An ophthalmic observation system for visualizing structures on and in an eye of a medical patient includes: an ophthalmic microscope; an anterior chamber gonoscopy device configured to work with an ophthalmic microscope to provide an image of an interior of a patient's eye; and a robotic arm configured to hold the anterior chamber gonoscopy device in position relative to the ophthalmic microscope and the patient's eye to provide an image of the interior of the eye.