157results about "Gonioscopes" patented technology

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.

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 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.

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.

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.

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.

An ophthalmic apparatus includes an image acquisition unit (159) configured to acquire an anterior segment image (E') of a subject eye (E), an optotype projection system (140) configured to present an optotype to the subject eye (E) in at least two presentation positions different from each other, and a line-of-sight direction detection unit (26) configured to extract a feature point from the anterior segment image (E') that has been acquired by the image acquisition unit (159) when the optotype has been presented in each of the at least two presentation positions, detect positional information on the anterior segment image (E') of the feature point that has been extracted, and detect a line-of-sight direction of the subject eye (E) on a basis of the positional information.

There is provided a method for determining type of cataract by an electronic device. The method includes performing vision focus calibration for a user, determining central and peripheral regions of interest on a display of the electronic device based on fixated vision, performing a primary test for obtaining scores for the central and peripheral regions of interest, selecting at least one vision test mode based on the obtained score, and adapting at least one visual display parameter based on the obtained score and the selected at least one vision test mode. The method also includes determining a type of cataract from the selected at least one vision test mode, determining severity of the determined type of cataract, and providing the determined type of cataract and the determined severity with one or more recommendations to the user.

This application provides a hyperspectral imaging device for the anterior segment of the anterior segment, comprising: an illumination optical path including a light source; an imaging optical path; a first beam splitter for splitting the light emitted from the imaging optical path into reflected light and transmitted light; an image acquisition optical path for receiving reflected light and converting the reflected light's optical signal into an electrical signal; a hyperspectral data acquisition optical path for receiving transmitted light; a scanning mirror with an adjustable angle; and a controller configured to adjust the deflection angle of the scanning mirror based on the position of the anterior segment region to be detected contained in the image, so that the light reflected from the anterior segment region to be detected can be projected into the hyperspectral data acquisition optical path along its optical axis. The device provided by this application offers doctors more reference information for disease classification and diagnosis, significantly reduces the impact of eye tremors on spectral data, and improves accuracy.

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

[Problem] To provide a technology with which it becomes more likely to be able to select a posterior chamber phakic intraocular lens having a size suitable for a subject's eye. [Solution] Provided is a simulation system comprising: an acquisition unit that acquires a non-insertion image, which is an image, captured by a tomographic device, of an anterior ocular segment of a subject's eye into which a posterior chamber phakic intraocular lens has not been inserted; a generation unit that generates, on the basis of the non-insertion image and the size of a posterior chamber phakic intraocular lens to be inserted into the subject's eye, an insertion image, which is an image of the anterior ocular segment of the subject's eye into which the posterior chamber phakic intraocular lens has been inserted; an identification unit that identifies, on the basis of the insertion image, an optimal size, which is the optimal size of the posterior chamber phakic intraocular lens to be inserted into the subject's eye; and an output unit that outputs information relating to the optimal size.

The invention belongs to the technical field of cataract crystal evaluation, and particularly relates to a cataract crystal turbidity degree quantitative evaluation method based on optical coherence tomography. OCT original data are calibrated through standard scatterer signals, the influence of equipment parameters and individual differences is eliminated, the objective comparability of physical quantities such as attenuation coefficients is ensured, and the accuracy of evaluation of the turbidity degree of a cataract crystal is improved. Subregions are accurately divided according to a crystal anatomical structure, attenuation coefficients of depth resolution and spatial texture features are synchronously extracted, limitation of single features is broken through, sensitive analysis of local opacity is realized, finally, multi-region and multi-dimensional parameters are automatically integrated by using a pre-trained feature fusion model, continuous comprehensive opacity quantitative indexes are generated, and the opacity analysis accuracy is improved. Dependence on artificial experience is completely avoided, and the sensitivity and repeatability of evaluation are remarkably improved; finally, closed-loop evaluation of calibration, regionalized decoding and intelligent quantization is formed.

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.

To provide a monitoring method for an eyeball emmetropization process.SOLUTION: The method includes the following steps: acquiring eyeball data information about an eyeball to be monitored; outputting retinal optical characteristic data information about the eyeball to be monitored on the basis of the eyeball data information about the eyeball to be monitored and reference eyeball data information; and analyzing and processing the retinal optical characteristic data information about the eyeball to be monitored, and outputting, for the eyeball to be monitored, an equation representing individual emmetropization characteristics as well as related parameters. Through the present application scheme, the refractive development status of children or adolescents whose ocular refractive system is in a developmental period is monitored, and, when any abnormal tendency is detected, attention is promptly given so as to control the progression of emmetropization of the eye within a normal range. For children or adolescents in whom refractive error of the eye already exists, the degree of the refractive error and its progression are monitored and analyzed, and a future tendency of emmetropization of the eye and a future change amount of axial length are predicted.SELECTED DRAWING: None

System for selecting an intraocular lens (2i) to be implanted into an eye (1) comprising an eye measurer (4) and a processing means (5) configured for computing a post-surgical visual performance of the plurality of intraocular lenses (2i) in the eye (1) of the patient to output a selection advise; wherein the post-surgical visual performance computation comprises: estimating a post-surgical position of the intraocular lens (2i), generating a post-surgical optical model (OEi) of the eye (1), and simulating the post-surgical visual performance of the intraocular lens (2i); the system comprises a lens measurer (3) for measuring the plurality of intraocular lenses (2i) to obtain a plurality of lens measurements (MLi) of the intraocular lenses (2i), wherein the processing means (5) is configured for obtaining the optical lens model (OLi) of each intraocular lens (2i) measured by the lens measurement equipment (3) based on its lens measurement (MLi).

An ophthalmic lens that includes a lens material having two opposing curved surfaces, the curved surfaces defining a lens axis; and a light scattering region surrounding a clear aperture. The clear aperture and the light scattering region are substantially centered on the lens axis, and the light scattering region has a plurality of spaced apart scattering centers (e.g., on a lens surface and / or embedded in the lens material) sized and shaped to scatter incident light, the scattering centers being arranged in a pattern that includes a random variation in spacing between adjacent dots and / or a random variation in dot size.

The invention relates to a device for compensating physical and / or optical distortions of a human eye comprising a housing and a lens arranged in an inner space of the housing. The device is characterized in that the device comprises a prism arranged in the inner space.

In certain embodiments, a system for detecting an intraocular lens (IOL) in an image of an eye includes an imaging system and a computer system. An imaging system generates an image of the eye. The eye has a plurality of structures, including IOLs. The computer system receives an image of the eye from the imaging system and detects one or more Purkinje images in the image of the eye. The Purkinje image includes reflections from the eye structure. The computer system uses the Purkinje image to detect one or more surfaces of the IOL and determines the location of the IOL from the surfaces of the IOL.

In accordance with various embodiments of the present disclosure, a device for non-invasive medical imaging is provided. In some embodiments, the device comprises a photonic integrated circuit scale dual frequency comb (DFC), a hand-held wand, and at least one processing element. The wand comprises at least one emission point for emitting light from the DFC at a plurality of different wavelengths and at least three sensors. The wand directs the emitted light at one or more bodily structures. The sensors are adapted to detect acoustic waves from thermo-elastic changes in one or more elements within the bodily structures. The processing element is for generating an optical absorption spectrum from the detected acoustic waves, identifying one or more elements within the bodily structures based on the optical absorption spectrum, and generating a three-dimensional image of the elements based on the optical absorption spectrum from the detected acoustic waves.

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, the flange including at least one tab, and at least one of a rear surface of the flange and a rear surface of the at least one tab including a microstructure.

The embodiment of the invention provides a room corner state detection method and device, electronic equipment and a storage medium, and belongs to the technical field of image processing. The method comprises the following steps: based on room corner image data, performing feature extraction on a target room corner through an encoder to obtain room corner features; on the basis of the room corner features, opening and closing angle classification is carried out through a first decoder, and room corner opening and closing state data are obtained; based on the room corner opening and closing state data and the room corner features, performing line representation form classification through a second decoder to obtain room corner representation form data; based on the room corner opening and closing state data and the room corner features, pathogenesis classification is carried out through a third decoder, and room corner pathogenesis data are obtained. According to the embodiment of the invention, the room corner state detection precision can be improved.

To provide a system and a method for improving scleral spur visibility in anterior segment OCT images.SOLUTION: There is provided 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 value of the eye. The system comprises 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 value 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.SELECTED DRAWING: Figure 1

To provide more effective information for showing an angle state of optometry.SOLUTION: A tomographic image processor includes a tomographic image acquisition part for acquiring multiple tomographic images containing the iridocorneal angle, acquired by redial scan centered at an approximate corneal apex, an analysis part for determining an analytic value related to the iridocorneal angle from each of the tomographic images, and a display processing part for correlating information on each analytic value acquired from each of the multiple tomographic images with a rotation angle in radial scan from which the iridocorneal angle corresponding to the analytic value is acquired, and for displaying the result on a display part.SELECTED DRAWING: Figure 7