343results about "Gonioscopes" patented technology

A gonioscopic attachment can attach to a gonioscope and can include atraumatic retention elements that are configured to engage an eye to retain the gonioscope relative to the eye. The gonioscopic attachment can be configured to position the gonioscope so that at least a portion of the concave distal surface of the gonioscopic optical element is spaced apart from the eye, and / or so that the curvature of the distal surface is angularly offset from the curvature of the eye. The gonioscope can include a fixation point configured to be visible to the subject when the gonioscope is positioned on the eye. In some embodiments, the retention elements can be incorporated directly into the gonioscope. A coupling mechanism can couple the gonioscope to a lid speculum. The gonioscope can include a light pipe, which can be configured to directly light into the eye.

The present invention relates to a portable device (100) for ocular diagnostic and disease detection in non-invasive manner, the device (100) comprises an image capturing module (10) positioned at a first end of the device (100), the image capturing module (10) captures high resolution images of patient's eye, an illumination module (20) configured to encompass the image capturing module (10), the illumination module (20) provides uniform illumination on the patient's eye, at least one auxiliary part removably coupled with the illumination module (20) by a plurality of mounting provisions (23) provisioned on the illumination module (20).

The invention relates to a full-automatic slit lamp and an intelligent diagnosis method thereof, and aims to improve the ophthalmic examination efficiency and accuracy. The slit lamp is composed of a slit lamp device, an automatic adjusting device and a man-machine interaction device. The automatic adjusting device comprises a calculation module and an adjusting module, and the adjusting module accurately drives the slit lamp device through gear transmission and automatically adjusts operation parameters according to a preset mode. The display module of the man-machine interaction device can display the working mode, the eye image data and the interaction information, and the prompt module guides the examinee to cooperate with the examination. The camera element of the slit lamp device converts the light into image data, and the communication device transmits the data to the cloud. And during fault diagnosis, the calculation element monitors image data in real time, marks abnormities through a visual algorithm, and enters a diagnosis mode. After different modes are operated for multiple times, the calculation unit analyzes imaging result abnormity, accurately locates and displays fault components, realizes automatic fault diagnosis, and reduces maintenance cost.

An OCT instrument comprising: an optical coupler which generates signal light and reference light from a swept narrowband light source; a detector which samples a time-varying interference signal based on the reference light and signal light returned from a sample; an adjustable optical frequency shifter which: generates a first sideband light by adjusting an optical frequency of the reference light, such that the detector unit samples a first time-varying interference signal resulting from an interference between the sideband light and the returned signal light; and maintains the optical frequency of the reference light such that the detector unit samples a second time-varying interference signal resulting from an interference between the reference light and the returned signal light. The OCT instrument generates a respective axial depth profile of the sample based on each of the sampled first time-varying interference signal and the sampled second time-varying interference signal.

A tool comprising a handpiece having a flattened cannulated tip that is adapted to receive flow from a pumping unit, in order to generate a jet of fluid suitable for procedures such “hydro-dissecting” cells in the eye. According to an embodiment of the invention, the tool comprises a visualization probe with at least one camera, wherein the sensor of the at least one camera is distally located at the tip of the tool to be inserted in to the eye for imaging from within the eye.

In accordance with one aspect of the present invention, an optical coherence tomography-based ophthalmic testing center system includes an optical coherence tomography instrument comprising an eyepiece for receiving at least one eye of a user or subject; a light source that outputs light that is directed through the eyepiece into the user's or subject's eye, an interferometer configured to produce optical interference using light reflected from the user's / subject's eye, an optical detector disposed so as to detect said optical interference; and a processing unit coupled to the detector. The ophthalmic testing center system can be configured to perform a multitude of self-administered functional and / or structural ophthalmic tests and output the test data.

The invention discloses a dioptric scleroderma cataract dynamic intraocular pressure stable control ultrasonic emulsification system adaptive to a dual-channel operation, which comprises a host control unit, an ultrasonic emulsification handle, a perfusion and suction system, an intraocular pressure monitoring unit, a pressure balance module and a scleroderma fragmentation module, through cooperation of the intraocular pressure control module and the two-way operation type adaptive control module, a high-precision filling valve and a closed-loop suction pump are synchronously adjusted in real time according to anterior chamber built-in and external monitoring fusion data, and intraoperative intraocular pressure fluctuation is controlled within + / -2 mmHg; through pulse modulation and a self-adaptive negative pressure curve of the hardcore fragmentation enhancement module, the stability of the anterior chamber is ensured while the hardcore fragmentation efficiency is improved; fluid dynamics and energy parameters can be automatically optimized according to conventional incisions or micro incisions; according to the system, the anterior chamber stability problem in the high-difficulty cataract surgery is solved.

Systems and methods for intraocular lens (IOL) selection using emmetropia zone prediction include determining pre-operative measurements of an eye, estimating a post-operative anterior chamber depth (ACD) of an intraocular lens based on the pre-operative measurements, estimating a post-operative manifest refraction in spherical equivalent (MRSE) of the eye with the IOL implanted based on the pre-operative measurements and the estimated post-operative ACD, determining whether the eye with the IOL implanted is likely to be in an emmetropia zone based on the estimated post-operative MRSE, re-estimating the post-operative MRSE of the eye with the IOL implanted using an emmetropia zone prediction model or a non-emmetropia zone prediction model based on the emmetropia zone determining, and providing the re-estimated post-operative MRSE to a user to aid in selection of an IOL for implantation in the eye.

Low-cost, portable in-vivo confocal ophthalmoscopes (PICOs) and associated methods are described that are capable of producing microscopic images of the anterior segment of the eye and the external eye structures enabling visualization of cellular and some sub-cellular structures. Some of the features of the described ophthalmoscopes include the use of a non-contact objective lens in conjunction with a grating-based, scan-less confocal microscopy approach, integration of the capability of imaging the external eye and anterior segment en face, integration of a display as part of the microscope, increased signal level and imaging speed, reduction of detected specular reflection, and attachment methods onto a slit lamp biomicroscope or for hand-held use.

Medical devices and methods of use are disclosed to exam an eye of a patient. A medical device may include a digital projector as part of an illumination system. A medical device may include one or more cameras as part of an observation system to capture reflected light from the eye. The observation system may include one or more adjustable optical systems. The digital projector may produce a slit of light to be projected onto the eye. The slit of light and the observation system may be focused at a plurality of focal depths within the eye.

An estimation system, method and program for estimating the age of an eye to be examined. The estimation system includes an acquisition module configured to acquire a measurement value of an attribute of an eye to be examined, the attribute being at least one of a plurality of characteristics of an anterior segment and a plurality of dimension values of the eye to be examined; and a determination module configured to determine an estimated age of the eye to be examined on the basis of the measurement value and correspondence information indicating a correspondence between a value of the attribute and an age of an eyeball.

A system for treating a media opacity in a vitreous media of an eye includes a visualization module adapted to provide visualization data of a portion of the eye via one or more viewing beams. The system includes a laser module adapted to selectively generate a treatment beam directed towards the media opacity in order to disrupt the media opacity. The laser module and the visualization module have a shared aperture for guiding the treatment beam and the one or more viewing beams towards the eye, the shared aperture being centered about a central axis. A controller is configured to acquire one or more defining parameters of the media opacity and determine when the media opacity is with a predefined target zone of a real-time viewing window. The media opacity is treated with the treatment beam when the media opacity is within the predefined target zone.

The invention discloses a continuous optical zoom slit-lamp microscope system and an inspection method and application thereof, and belongs to the technical field of ophthalmology medical equipment. The system is composed of a continuous zooming module, a light source module, a data processing module, a 3D imaging module and an AI identification module. The inspection method comprises the steps of equipment initialization and head position fixation of an inspected person, AI low-magnification (5 *) preliminary screening, adaptive lens high-magnification (40 *) fine observation, dynamic light source adjustment, three-dimensional data acquisition and cloud intelligent diagnosis. The method is applied to examination and intelligent diagnosis of eye diseases such as cataract. The problems that a traditional slit-lamp microscope is discontinuous in zooming, inconvenient to operate, lack of intelligent diagnosis and free of 3D stereoscopic display are solved, and the objective of the invention is to realize simple and convenient equipment operation, continuous examination process, intelligent diagnosis and stereoscopic display, facilitate collective teaching, significantly improve the diagnosis efficiency and accuracy of eye diseases such as cataract and the like, and improve the diagnosis efficiency and accuracy of eye diseases such as cataract and the like. And DICOM standard data cloud sharing and remote consultation are supported.

A tomographic imaging system, methods to visualize tomographic images, and a ‎stereoscopic calibration procedure for obtaining two-dimensional cross-sectional ‎and three-dimensional volumetric images over the entire anterior eye. The optical ‎system combines stereoscopic imaging with patterned illumination (e.g., slit-‎scanning or array of slits). The captured cross-sectional images can be viewed ‎individually or as a fly-through video. The calibration and reconstruction methods ‎determine the true spatial location of imaged features and record a 3D volumetric ‎representation of the anterior eye. The system can image the entire anterior ‎chamber and contiguous structures, including the corneal limbus, sclera and ‎eyelids. Furthermore, the system can obtain corneal topography. ‎

In accordance with one aspect of the present invention, an optical coherence tomography-based ophthalmic testing center system includes an optical coherence tomography instrument comprising an eyepiece for receiving at least one eye of a user or subject; a light source that outputs light that is directed through the eyepiece into the user's or subject's eye, an interferometer configured to produce optical interference using light reflected from the user's / subject's eye, an optical detector disposed so as to detect said optical interference; and a processing unit coupled to the detector. The ophthalmic testing center system can be configured to perform a multitude of self-administered functional and / or structural ophthalmic tests and output the test data.

The apparatus (100) for a medical procedure includes a gonioscope (118) having a distal surface (120) for placement adjacent to a patient's eye (142), a proximal surface (121) opposite the distal surface, and multiple facets (119) between the distal and proximal surfaces. The apparatus also includes a camera (112) for capturing an image of the anterior chamber (129), a laser (108) for generating a beam, a scanner (110) for directing the beam through the proximal surface of the gonioscope, and optics for focusing the beam to strike tissue at a cone angle of 2° or less. A controller (132) processes the image of the anterior chamber to identify a region (308) of the trabecular meshwork (150) within the eye and controls the scanner to direct the beam to strike the region at multiple locations.

A device and method for early detection of eye disease including a corneal topography device including a camera, such as a rotating Scheimpflug camera, configured to measure the elevation of a patient's two anterior corneas sequentially or simultaneously; a computer processor; and non-transitory computer readable media including computer readable instructions, which, when executed by the computer processor, causes the device to measure and store elevation data at a plurality of points on the patient's anterior corneal surfaces; organize the elevation data for each cornea into a two-dimensional matrix where the center of the cornea is in the center of the data frame, rotate the data for a first eye 180 degrees around the Y axis relative to a second eye, subtract data on each corresponding corneal point, and generate an elevation difference matrix showing the degree of symmetry or asymmetry between the patient's left and right eye corneal topography.

A method for assessing a lens capsule stability condition in an eye of a human patient includes simultaneously directing electromagnetic energy in a predetermined spectrum via an energy source onto a pupil of the eye after movement of the eye results in eye saccades occurring therein. The method further includes acquiring images of the eye indicative of the eye saccades using an image capture device and calculating a motion profile of the lens capsule using the images via an ECU. Additionally, the method includes extracting time-normalized lens capsule oscillation trajectories based on the motion profile via the ECU and then model fitting the lens capsule oscillation trajectories via the ECU, thereby assessing the lens capsule instability condition. Also disclosed herein is an automated system for performing an embodiment of the method, the automated system including an energy source, an image capture device, and an ECU.

A non-sliding, non-sutured hands-free contact lens assembly for ophthalmic procedures utilizes a number of micro structures strategically placed on the bottom of either the contact lens or the bottom of a contact lens holder ring. After the contact lens, or the contact lens assembled with the contact lens holder ring, is placed on the cornea of the eye and centered, a surgeon applies downward pressure either on the contact lens itself or on the lens holder ring. This secures the lens assembly to the cornea due to increased friction between the micro structures and the tissues of the eye when the micro structures penetrate through the tear film and, optionally, viscous solution film and into the contact with superficial layer of cornea or other parts of the eye, thus temporarily anchoring the contact lens, or lens holder, to the desired surgical site.

This flow velocity measurement method comprises: a heating step (S102) for heating a part of a medium; a first optical measurement step (S101) for acquiring a first image of observation illumination light that has passed through the medium, at a first timing; a second optical measurement step (S103) for acquiring a second image of observation illumination light that has passed through the medium, at a second timing which is after the first timing and which is during or after execution of the heating step; a first refractive index distribution change calculation step (S104) for calculating first information pertaining to a change in refractive index distribution based on the heat distribution of the medium on the basis of the first image and the second image; and a flow velocity calculation step (S105) for calculating the flow velocity of the medium on the basis of the first information pertaining to the change in the refractive index distribution.

The present invention relates to a method and a device for estimating a full shape of a lens of an eye from measurements of the lens taken in-vivo by optical imaging techniques, the measurements comprising visible portions of the lens, the method comprises defining non-visible portions of the lens parting from the in-vivo measurements and using a geometrical model of a lens previously built from ex-vivo measurements. The full shape parameters of the crystalline lens can be estimated in the present invention from optical imaging techniques to improve the estimation of the IOL position and thus the IOL power selection.

Certain embodiments disclose a contact lens holder including a rim forming a lens receptacle for receiving a lens and a flange integrally formed with and extending from the rim, flange comprising at least one tab, wherein at least one of a posterior surface of the flange and a posterior surface of the at least one tab comprises micro-structuring.

To provide improved method and device for determining a target position of an opening leading to Schlemm's canal through trabecular meshwork, and improving the flow.SOLUTION: A surgical procedure includes the insertion of a slender probe 23 into a target tissue area including trabecular meshwork 9 and Schlemm's canal from an opening to the inside of the eye across the anterior chamber. An exemplary system includes: an optical microscope for a surgeon to visually recognize the eye by a microscopic image during the procedure; an optical coherence tomographic (OCT) device configured to perform OCT scanning of a target position in the target tissue area during the procedure; and an image processing device configured to generate an expansion image by superimposing an OCT image of the target position and a graphic visual element for identifying the position. The graphic visual element is aligned with the microscopic image for helping the surgeon advance the distal end of the slender probe to the target position.SELECTED DRAWING: Figure 6

An optical measurement system and apparatus for carrying out cataract diagnostics in an eye of a patient includes a Corneal Topography Subsystem, a wavefront aberrometer subsystem, and an eye structure imaging subsystem, wherein the subsystems have a shared optical axis, and each subsystem is operatively coupled to the others via a controller. The eye structure imaging subsystem is preferably a fourierdomain optical coherence tomographer, and more preferably, a swept source OCT.

Methods and systems for measuring the optical quality of an eye based on laser ray tracing are provided herein. Generally, the method uses the steps of temporally detecting the human eye with one or more laser beams in a set of points within the pupil of the eye, detecting projections of the laser beams reflected and scattered from the retina, and processing an image of the detected laser spots. In one embodiment, the components of the system include, but are not limited to, a laser having a dual-axis acousto-optic deflector and a dual-output generator of a digitally synthesized sinusoidal voltage, a collimating optical system, a conjugate telescope system, a polarizing beam splitter, and first and second photosensitive detectors, each component being in operable communication with a processing unit. Another embodiment uses a multi-laser block that does not require laser beam scanning.

A method for collecting biometric measurement data of an eye on the basis of different measurement modalities, allowing for physiologically correct, representative, and robust biometric measurement data. In the method, the measurement data for individual measurement variables and the dynamic behavior of the eye are recorded continuously at the highest possible repetition rate over the measurement time. The individual phases of the dynamics of the eye which define the limits of the phase for stable vision are analyzed on the basis of the measurement values, and only the measurement data for the individual measurement variables are output which have been detected during the phase for stable vision. Although the proposed method is provided for collecting biometric measurement data in preparation for a cataract operation, the method can also be applied to other areas of ophthalmology to generate error-free measurement data or recordings of the eye.

Provided herein are a method and device for laser ray tracing measurement of intraocular distances and structures. Generally, the device has a laser, pairs of acousto-optical deflectors, drivers, frequency generators, and beam splitters, a telescope and collimating lens, a basic optometric channel and a processing unit arranged and configured to probe an eye with modulated laser beams oriented to cross along optically determinable paths. Analysis of the detectable backscattered radiation is used to confirm the position of a beam cross-point and to calculate the distance thereof to an apex of the cornea. Data obtained from repeated probing is used to reconstruct the intraocular structure of the eye.

A system arranged to process an anterior-segment optical coherence tomography, AS-OCT, image comprising representations of portions of a scleral spur of an eye to obtain a geometric measurement of the eye, comprising data processing hardware arranged to: process the AS-OCT image to acquire respective locations in the AS-OCT image of the representations of the portions of the scleral spur of the eye in the AS-OCT image; and obtain the geometric measurement based on the acquired locations. The system further comprises an OCT imaging system which is operable to acquire the AS-OCT image and comprises a fixation target to fix a gaze direction of the eye during acquisition of the AS-OCT image such that an axis in the AS-OCT image corresponding to a pupillary axis of the eye is aligned with a direction in the AS-OCT image corresponding to an axial imaging direction of the OCT imaging system.

A method of treating an eye includes delivering an OCT beam along an OCT optical path that enters a first optical subsystem along an input axis, and exits the first optical subsystem along an output axis that: 1) is substantially parallel to the optical axis of the eye, 2) is radially offset from the optical axis, and 3) extends through the cornea and into a portion of the irido-corneal angle at a point along a circumferential angle of the eye. The method also includes imaging the portion of the irido-corneal angle with the OCT beam; delivering a laser beam along an angled optical path that extends through the first optical subsystem, through the cornea, through the anterior chamber, and into a target volume of ocular tissue in the portion of the irido-corneal angle; and photodisrupting at least a portion of the target volume of ocular tissue with the laser beam.

The present invention provides a goniolens and gonioscopy tool that can be freely moved on the cornea, thereby allowing for easy adjustment of the viewing angle and direction. [Solution] The goniolens 1 comprises a convex aspherical portion 2 that partially contacts the cornea 11, and a convex spherical portion 3 provided on the opposite side of the aspherical portion 2 for observing the iridocorneal angle 12 through the aspherical portion 2. The iridocorneal angle observation device 6 comprises the goniolens 1 and a holder 5 that holds the goniolens 1.