203results about "Tonometers" 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.

A glaucoma treatment apparatus including an imaging device capable of imaging the anterior segment of the eye, a treatment laser, an algorithm programmed to determine a location and a cross sectional area of a treatment based on a customized anatomy of the anterior segment of the eye including the trabecular meshwork (TM), the Schlemm's Canal (SC) and collector channels (CCS), obtained from pre-operative images of the anterior segment of the eye, a pre-operative intraocular pressure (IOP) level and a target IOP reduction as an inputs, and a processor configured to actuate the apparatus to create an outflow channel with a cross-sectional area and location or multiple outflow channels with multiple cross-sectional areas and locations from the anterior chamber (AC) to the SC across the TM, as determined by the algorithm to achieve the target intraocular pressure (IOP) reduction. Also disclosed is a method of reducing intraocular pressure in an eye.

The invention belongs to the technical field of control systems, and particularly relates to a control system based on combination of dynamic focal length adjustment and vision correction, which comprises a bearing plate and a parameter configuration and feedback module, the two sides of the top of the bearing plate are rotationally connected with lens groups, and the parameter configuration and feedback module is used for collecting user information and initial matching training core parameters and sending the initial matching training core parameters; continuously receiving multi-dimensional real-time feedback, and iteratively optimizing parameters based on the feedback; the dynamic training content generation module is used for generating dynamic 2D and 3D contents and interactive games of adaptive set and adjustment training according to the training parameters optimized by the parameter configuration and feedback module; on the basis, through an adjusting and training mechanism combining hardware and software, personalized adaptation to vision requirements of different users is achieved, medical risks and high cost of laser surgery are avoided, and the problems that traditional glasses and contact lenses are limited in adaptability and inconvenient to use in daily life are solved.

The present solution relates to a pressure-adjustable test eye for tonometers, in particular for contactless tonometers. The proposed pressure-adjustable test eye for tonometers consists of a base element with a pressure source, at the edge of which base element a film, simulating the cornea, is fastened, the resulting cavity being filled with liquid or gas. According to the invention, the film simulating the cornea has, starting from a central, mechanically excitable region, gradually varying conducting properties for mechanical waves. For simulation of the cornea, a film is used which is self-supporting and has a certain residual stiffness. The pressure-adjustable test eye is intended for tonometers, in particular contactless tonometers, in order to generate the most realistic measurement signals possible, in order to be able to carry out regular function tests and / or calibrations. However, the pressure-adjustable test eye can also be used in elastography or elastometry in order, for example, to enable a pre- and postoperative evaluation of corneas to be carried out.

This invention discloses an eyeball implant. According to this invention, an eyeball implant can be permanently implanted on the eyeball without the hassle of attachment and detachment, and can form a beautiful appearance that is integrated with the pupil without blocking the light-entering aperture.

A tonometer (100, 200, 300, 400, 900) for measuring properties of an eye (960). The tonometer comprises an execution unit (102, 202, 902) comprising impact means (104, 904) arranged to apply, when the tonometer is in use, an impact on a cornea (962) of the eye; a measuring unit (106, 906) comprising at least one optical sensor (108, 908); and a controller (110, 910) coupled to the execution unit and the measuring unit, wherein the controller is configured, when in use, to operate the execution unit to apply the impact on the cornea of the eye using the impact means; and the at least one optical sensor to perform multiple measurements of a displacement of the cornea caused by the impact during a predetermined time period.

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

The present disclosure pertains to the field of animal disease models, specifically to a method for constructing an animal model of open-angle glaucoma. In this model, the pathogenesis of open-angle glaucoma is mimicked by inducing necroptosis in trabecular meshwork cells through the injection of IFN-γ into the anterior chamber. This process leads to the inhibition of trabecular meshwork activity and functional impairment, resulting in elevated intraocular pressure and subsequent optic nerve changes indicative of glaucoma. The pathophysiological alterations observed in the animal model closely resemble those seen in human open-angle glaucoma, including chamber angle opening, trabecular meshwork dysfunction, increased intraocular pressure, and loss of RGCs.

To specify an arrangement and a method for measuring a field of vision of an eye (6) which, while avoiding the disadvantages of the prior art, enable an objective, less complex and more reliable measurement of a field of vision of an eye (6), it is proposed that the arrangement comprises measuring means (1, 3) for measuring an eye movement and in the method, the eye movement is measured in an initial measurement (S1). Furthermore, the use of an implant (2) comprising a transponder coil (1) for introduction into an eye (6) for determining an intraocular pressure for the objective measurement of the boundaries of a field of vision is proposed.

Disclosed is a tonometer (100) for measuring intraocular pressure of an eye (150), the tonometer comprising: an air pulse generator (102); a corneal oscillation measurement sensor (104), and a controller (106) communicably coupled to air pulse generator and corneal oscillation measurement sensor, wherein the controller is configured to: control the air pulse generator to provide an excitation air pulse (108) towards a cornea (152) of the eye during a first time period (T1), wherein provided excitation air pulse has a first intensity (I) at an end time (T1e) of first time period, and this intensity is reduced from first intensity to a second intensity during a second time period (T2), wherein the second time period is after first time period, for producing corneal oscillations (320, 330); measure a signal related to corneal oscillations, using corneal oscillation measurement sensor; and determine intraocular pressure from measured signal.

The present application relates to the technical field of medical devices, and discloses an intraoperative prone position head and neck support and eye protection integrated device, which comprises a head support module, a neck support module, a tracheal catheter fixing module, an eye protection and monitoring module, a facial reflection observation module and a headgear EEG monitoring module; the head support module adopts multi-point support and a central exposed window to achieve eye, nose and mouth suspension protection; the neck support module is adjustable to maintain cervical neutral position; the tracheal catheter fixing module stably anchors the catheter and has a warning function; the eye protection and monitoring module collects intraocular pressure and blood flow parameters in real time; the facial reflection observation module realizes visual observation without turning over; and the headgear EEG monitoring module collects EEG signals. The present application integrates support, fixation, monitoring and warning, effectively improves airway and eye safety in prone position surgery, reduces the risk of complications such as excessively high intraocular pressure, catheter displacement and abnormal cerebral perfusion, and is suitable for long-time prone position surgery.

A tonometer (100, 200) for measuring the characteristics of an eye (110) is disclosed. The tonometer comprises an execution unit (120) having an impact means (130) configured to impact the cornea of ​​the eye when in use, at least one measuring unit (140, 202), a first confocal chromatic sensor (150, 204), and a controller (160, 206) connected to the execution unit, the measuring unit and the first confocal chromatic sensor, wherein the controller is configured to impact the cornea of ​​the eye with the impact means using the execution unit when in use, to determine an intraocular pressure value using the measuring unit and to measure the corneal thickness value of the eye using the first confocal chromatic sensor, wherein the measuring unit (140) is a velocity measuring unit that measures the velocity profile of the impact means during impact, and the controller is configured to determine an intraocular pressure value using the measured velocity profile.

The invention discloses a modular integrated rapid ophthalmology screening vehicle and an examination method thereof, and relates to the technical field of ophthalmology examination. The inspection mechanism is mounted on the rear side of the bottom inner wall of the screening vehicle body; the two shading mechanisms are mounted between the top inner wall and the bottom inner wall of the screening vehicle body; through cooperative work of the vision detection module, the fundus imaging module, the intraocular pressure detection module, the slit lamp module and the AI auxiliary diagnosis module, and efficient interconnection between equipment in each module and the host server through USB-C and HDMI dual interfaces with unified specifications, the functional modules can be flexibly increased or decreased according to requirements of different screening scenes; the problems that a traditional whole machine integrated device is complex in structure and large in deployment difficulty are solved, multi-dimensional detection such as refraction detection, fundus imaging and intraocular pressure measurement can be completed through professional devices of all the modules, the screening efficiency and diagnosis accuracy are greatly improved, and the coverage range of ophthalmology screening service is effectively expanded.

This application provides a method, apparatus, and device for left and right eye recognition. The method involves emitting a first signal at a first angle and a second signal at a second angle; receiving reflected signals, including a first reflected signal and a second reflected signal, where the first reflected signal is the signal reflected back from the first signal and the second reflected signal is the signal reflected back from the second signal; and determining whether the currently measured eye is the left or right eye based on the first and second reflected signals. Both the first and second signals are optical signals, or both are coded signals, where the coded signal is an optical signal carrying a code. Embodiments of this application can automatically identify the left and right eyes.

The invention discloses a dual-channel drug delivery treatment system for open-angle glaucoma night intraocular hypertension, and relates to the technical field of medical instruments and clinical assistance. The system comprises a central control module, a time window control module, an intelligent double-medicine-bin medicine feeding module, a user interaction module, a data management and analysis module, a communication module, a safety and self-checking module and a power supply and management module. According to the invention, through the time window control module, the traditional morning administration is changed into night administration or individualized administration before intraocular pressure peak, the synchronization of the drug action peak and the night intraocular pressure peak is ensured, and through the intelligent double-drug-bin administration module and the precise metering pump, two drugs with the lowest effective dose are precisely delivered strictly according to the specific sequence of PGA first and CAI second; the time sequence control and precise quantitative administration based on the drug synergistic effect mechanism can ensure the synergistic antihypertensive curative effect, and can obviously avoid the high incidence rate adverse reaction caused by standard dosage combination.

An implantable intraocular physiological sensor (e.g., 200) for measuring intraocular pressure, glucose concentration in the aqueous humor, and other physiological characteristics. The implantable intraocular physiological sensor (e.g., 200) may be at least partially powered by a fuel cell, such as an electrochemical glucose fuel cell (e.g., 210). The implantable intraocular physiological sensor (e.g., 200) may wirelessly transmit measurements to an external device. In addition, the implantable intraocular physiological sensor may incorporate aqueous drainage and / or drug delivery features.

The invention relates to the technical field of contact lenses, in particular to a self-driven sensing contact lens with an intraocular pressure monitoring function and a preparation method of the self-driven sensing contact lens. Comprising a lens, a sensing assembly, an electrode structure and a monitoring characterization module, the sensing assembly comprises a silicon substrate and a nanowire array arranged on the upper surface of the silicon substrate, the nanowire array comprises a plurality of nanowires arranged at intervals, each nanowire is perpendicular to the upper surface of the silicon substrate, and the electrode structure is arranged on the upper surface of the silicon substrate. The sensing assembly is used for generating a water volt electric signal related to deformation when the silicon substrate is deformed; the electrode structure comprises a first electrode plate arranged between the sensing assembly and the inner side of the lens and a second electrode plate adhered to the side, away from the lens, of the sensing assembly. The self-driven sensing contact lens has high sensitivity and good biocompatibility, can comprehensively and continuously capture tiny shape changes of eyeballs in different states, and provides richer and more accurate data support for intraocular pressure monitoring.

According to one embodiment, an intraocular pressure measurement system includes a pressure sensor implantable in an eye and comprising an optical cavity with an optical cavity depth that varies based on an intraocular pressure of the eye. The system further includes an external device for emitting light and measuring intraocular pressure based on reflected light. In an embodiment, the external device includes a light source configured to emit a plurality of beams, and a spectrometer configured to receive light reflected from at least two beams and produce an output based on the light reflected from the at least two beams. The output varies based on the depth of the optical cavity. The external device further includes a processor configured to receive the output and, based on the output, estimate the intraocular pressure of the eye.

The invention discloses a multi-mode simulation device and method for intraocular pressure. The simulation device comprises a track vertically arranged on the base table, a clamp is connected to the track in a sliding mode, a first liquid storage pipe with an opening in the top is installed on the clamp, the first liquid storage pipe is connected with a second liquid storage pipe through a flexible connecting pipe, and the first liquid storage pipe, the second liquid storage pipe and the flexible connecting pipe are filled with testing liquid; a temperature control module comprising a temperature sensor and a heater is arranged on the outer wall of the second liquid storage pipe; a simulated intraocular pressure measuring end is arranged at the top of the second liquid storage tube; and a distance measurement display module is arranged right above the first liquid storage pipe. The problems of mechanical pressure drifting and slow dynamic response are solved while intraocular pressure simulation precision and dynamics are guaranteed, multi-mode pressure control is achieved, practicability is high, a reliable platform is provided for medical instrument testing and pathological research, and animal experiments can be effectively replaced.

The invention discloses a real-time IOP closed-loop feedback and treatment parameter self-adaption system, and relates to the technical field of medical instruments, the real-time IOP closed-loop feedback and treatment parameter self-adaption system comprises an instantaneous IOP measurement unit, a central processing and control unit and a laser treatment unit, the instantaneous IOP measurement unit is used for continuously collecting intraocular pressure data through a microsensor or a flow velocity estimation mode in the operation process; the central processing and control unit is in signal connection with the instantaneous IOP measuring unit and is used for receiving and processing the intraocular pressure data and generating an adjusting instruction of laser energy and / or emission times in real time through a closed-loop control algorithm; the laser treatment unit is in signal connection with the central processing and control unit and used for receiving the adjusting instruction and adjusting the output laser treatment parameters in a self-adaptive mode, intraocular pressure changes can be monitored in real time in the operation process by establishing a real-time closed-loop control framework from monitoring, decision making to execution, and the laser treatment parameters are dynamically adjusted according to the intraocular pressure changes.

A method of detecting presence or absence of a magnetic measurement probe at a measurement launch position in an electromagnetic coil of an ophthalmic instrument includes applying a temporary current pulse to the electromagnetic coil, detecting a counter-electromotive force voltage spike induced in the electromagnetic coil by the current pulse, evaluating a decay behavior of the counter-electromotive force voltage spike, and correlating the decay behavior of the counter-electromotive force voltage spike to presence or absence of the measurement probe at the measurement launch position.

Disclosed is an optical attachment (100, 200) for emitting light (116A, 116B) towards a target (106), the optical attachment comprising a hollow body (108, 202) of light guiding material, the hollow body comprising a through opening (110, 204), an outer surface (112A, 206A), an inner surface (112B, 206B) opposite to the outer surface, a first output facet, and a posterior facet (114B, 208B) opposite to the first output facet; and the posterior facet arranged to receive light from one or more light sources (118A, 118B) and to guide the received light via the hollow body towards the first output facet; and wherein the first output facet when in use is configured to emit light towards the target forming a first illuminated image (102, 302) of the first output facet on the target.

A system and method for intraocular measurements is provided. Apparatus and methods are described that include an illumination apparatus (300) configured to direct light into a subject's eye. An optical device (100) is positioned inside the subject's eye, the optical device including a Fabry-Perot interferometer (106) having at least two mirrors (162, 164), the distance between the mirrors (162, 164) configured to change as an intraocular parameter of the subject's eye changes. A retroreflector (140) is configured to automatically reflect light transmitted through the Fabry-Perot interferometer (106) out of the subject's eye. A readout device (400) is configured to detect the light reflected out of the subject's eye. Other applications are also described.

The present invention addresses the technical problem of providing an ultrasonic ophthalmic tonometer that can use a plurality of ultrasonic wave elements to irradiate a subject's eye with ultrasonic waves of sufficient output for eye pressure measurement, and an ultrasonic ophthalmic tonometer control program. An ultrasonic ophthalmic tonometer that measures the eye pressure of a subject's eye using ultrasonic waves is characterized by comprising an imaging optical system that images the subject's eye, and an irradiation means that includes a plurality of ultrasonic wave elements and a support member that supports the ultrasonic wave elements, and that irradiates the subject's eye with ultrasonic waves, the support member having an opening portion for passing the optical axis of the imaging optical system.

A system for performing ophthalmic treatment includes a surgical microscope configured to capture a surface image of an eye of a patient; and an imaging device mounted on the surgical microscope and configured to capture a tomographic image of an eye of a patient. A controller is coupled with the surgical microscope and the imaging device, the controller configured to receive the surface image and the tomographic image and to provide feedback based on the tomographic image and the surface image to facilitate an ophthalmic treatment. Feedback may involve avoiding capsular bag rupture during phacoemulsification, safely performing retinal membrane dissection, IOL implantation, treating glaucoma, or performing other ophthalmic treatments.

A non-contact type ocular physical property measuring device 1 of this invention comprises: an excitation part 102 that excites at least one or more excitation points on an eyeball by using an irradiation wave to generate a surface wave on a surface of an eye to be examined; a detection part 103 that detects the surface wave generated by the excitation part 102 at at least one or more detection points, which are different from the excitation points, on the eyeball; a surface wave processing part 208 that analyzes the surface wave detected by the detection part 103; and an ocular physical property calculation part 209 that calculates physical properties of the eyeball based on the analyze result by the surface wave processing part 208. With this configuration, the ocular physical property measuring device 1 according to the present invention can measure an intraocular pressure and so on using surface waves generated on the eyeball surface intentionally by the excitation part 102 without any vibration of the eyeball itself or the cornea itself. As a result, it is possible to measure intraocular pressure, Young's modulus, shear modulus, viscosity, etc. of ocular tissue without the examinee feeling any discomfort.

An optical sensor system includes a light source and an optical fiber configured to transmit wavelengths of light received from the light source. A Bragg grating is disposed in the optical fiber. The Bragg grating is configured to reflect a wavelength of the wavelengths of light based on a force applied to the optical fiber that corresponds to an intraocular pressure (IOP). An optical spectrum analyzer is configured to detect the wavelength.

A device and method of use for measuring and modifying orbital content volume, pressure, blood flow, venous drainage, lymphatic drainage, and pulsatility of a subject's eye socket(s) (orbits) are provided. The device includes goggles including at least one chamber in front of the orbit that serves to expand the functional orbital volume to include the orbital contents and the space inside the chamber, at least one pressure measuring sensor, means for controlling the pressure inside the chamber such as a release valve, pump and / or vacuum device in fluid communication with the chamber, a processing and control mechanism, means of communication, and a power supply. The control mechanism can be operatively coupled to the pump, vacuum, release valve device and can maintain a predetermined pressure or pressure modulation in response to the measured pressure in the chamber when the device is worn by a subject.