348results about "Tonometers" patented technology

Apparatus include a particle array configured to propagate an incident solitary wave to an eye, a housing configured to support the particle array, and a sensor coupled to the particle array and configured to detect a return solitary wave propagating along the particle array from the eye. Methods include directing an incident solitary wave along a solitary wave particle array coupled to an eye and detecting a return solitary wave propagating along the solitary wave particle array from the eye. Methods also include estimating intraocular pressure for the eye by comparing solitary wave data to a relationship between a time of return solitary wave time of flight and an intraocular pressure.

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.

The present invention discloses a fully wireless ocular surface pressure monitoring system based on a multi-frequency phase-shift decoupling self-calibration algorithm, relating to the technical field of intelligent ophthalmic detection. The system comprises a wearable three-layer contact lens, wherein the outer layer is embedded with a capacitive eyelid pressure sensor and a first spiral coil, and the inner layer is embedded with a piezoresistive intraocular pressure sensor and a second spiral coil, which are respectively tuned to different center frequencies to modulate pressure changes into radio frequency signals. Externally powered receiving glasses or eye masks comprise a multi-frequency transmitting coil, a rectifier circuit and a receiving coil, which supply energy to the sensing structure in the contact lens and sense and obtain a composite signal formed by spatial superposition, which is transmitted to a processing circuit and then sent to a mobile computing terminal. The terminal performs multi-frequency decoupling, sparse matrix separation and temporal self-calibration processing to generate calibration curves of eyelid pressure and intraocular pressure, thereby realizing real-time perception of dual parameters in the eyes-closed state. The system has the advantages of compact structure, high signal separation accuracy and high degree of wirelessness.

To reduce impact from a retinal vessel on analysis of a choroidal vessel.SOLUTION: A method for processing an image includes a step of enhancing a choroidal vessel in a first fundus image in which the choroidal vessel is relatively made to be conspicuous by reading image data of the first fundus image (R color fundus image) and a second fundus image (G color fundus image), extracting a retinal vessel from the second fundus image, removing a retinal vessel from the first fundus image, thereby acquiring a choroidal vessel image in which the choroidal vessel is made to be conspicuous.SELECTED DRAWING: Figure 5

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 utility model discloses a wearable intraocular pressure measuring device, relates to medical instrument technical field, including intraocular pressure instrument, fixed frame, connecting band and elastic band, the fixed frame is provided with the through-hole, the one end of two fixed frame that is not provided with the through-hole is connected through the connecting band, the one side of fixed frame that is provided with the through-hole is set as the arc surface, the elastic band is provided with the through-hole. The other end of the fixing frame is rotationally connected with one end of the elastic band, a locking unit is installed on the plane of the side, away from the arc face, of the fixing frame, and the intraocular pressure instrument is installed on the fixing frame through the locking unit. The defects that an existing household portable intraocular pressure instrument measures in a handheld mode, however, the intraocular pressure instrument shakes easily due to the fact that the human body cannot keep still easily, and the measurement result is affected are overcome.

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 invention relates to the technical field of intraocular pressure measurement, and discloses an artificial eyeball and an intraocular pressure monitoring simulation platform and method. The method comprises the following steps: controlling a water pressure regulator to regulate water pressure in a water injection pipeline and an artificial eyeball according to an intraocular pressure data model; a pressure sensor in the artificial eyeball senses and obtains a pressure electric signal in the artificial eyeball in real time; the pressure electric signal is transmitted to a transmitting coil through a signal wire, and the transmitting coil transmits the pressure electric signal to a receiving coil outside the artificial eyeball through mutual inductance; the receiving coil and the transmitting coil are in mutual inductance communication to receive and obtain a pressure electric signal, and the signal acquisition device acquires the pressure electric signal of the receiving coil to obtain an intraocular pressure measurement value; the actual intraocular pressure value is obtained by conducting signal collection on the water pressure sensor. By applying the system, the function of simulating the adjustable aqueous humor pressure and the blinking action can be achieved, high integration and intelligence are achieved, and accurate control and real-time monitoring of the change of the internal pressure of the simulated eyeball can be achieved.

Systems, devices and methods are provided that provide assistance in selecting appropriate interventions for treatment of disease and injury to the eye. Systems of the inventive concept provide cloud-based processing and storage of clinical and patient-specific data, which can provide treatment recommendations and projected outcomes to a practitioner using a local device. Systems, devices, and methods can generate interactive physiomechanical models of the eye of a specified individual, which are derived measurements of mechanical properties of structures of the eye. The physiomechanical model is interactive, and can be used to emulate the effects of one or more medical interventions in the eye in order to implement an optimized treatment plan for the individual.

Systems and methods are disclosed for facilitating the evaluation of eye health and vision. The system is a mobile system and comprises at least one diagnostic device for performing a vision diagnostic test, the device being a VR headset; a portable computer communicatively coupled to the at least one diagnostic device, the computer having hardware adapted to guide a patient through the test, to compile test data, and to transmit the test data via a data connection; and a server in communication with the computer via the data connection, the server gathering the test data and presenting test data to a physician so that treatment may be provided to the patient. The at least one diagnostic device may include multiple portable, handheld diagnostic devices.

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.

Obtaining corneal measurements for non-contact tonometry. Systems, devices, and methods for determining intraocular pressure (IOP) of an eye are provided. The system may include a pump configured to generate an air puff and a nozzle configured to direct the air puff along a first axis toward the eye. The system may further include a light source distal to the nozzle and oriented to emit a light beam along a second axis transverse to the first axis toward a first linear optical sensor. A first portion of the light beam illuminates an outer surface of the eye, and a second portion of the light beam passes through a front surface of the eye. The system may further include a first linear optical sensor positioned distal to the nozzle and configured to receive the second portion of the light beam.

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.

A biosensor includes a periodic crystalline structure first layer, and an amorphous crystalline structure second layer. The first and second layers are formed from a biocompatible silicone having a Young's Modulus E between 0.4 and 2.0 MPa. The biosensor has a pressure dependent NIR resonance peak shift of less than 15 nm over a field of view of 40°, and has an optical pressure sensitivity of between 0.38 and 2.6 nm / mm Hg. The biosensor may be formed by forming a 3D crystalline structure having a periodic amorphous crystalline first layer and an amorphous crystalline second layer. Voids of the 3D crystalline structure are filled with the biocompatible silicone / polydimethylsiloxane a material. The 3D crystalline structure is removed to form an inverse structure having a first volume of an amorphous arrangement of voids and a second volume of a periodic arrangement of voids.

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.

To provide a non-contact tonometer which can reduce a capacity of capacitor, power capacity and size of a power source.SOLUTION: A tonometer includes: an electric actuator (solenoid 34g) that compresses the air inside a cylinder 34d by a piston 34f; a nozzle 21b communicating with an inside of the cylinder and blowing an air compressed by the piston onto a subject eye; a capacitor 46 for discharging the electric charge accumulated by charging and supply a first drive current (drive current I2) to the electric actuator; and a power source 42 which can execute a charging of the capacitor and a supply of second drive current (drive current I1) to the electric actuator. The electric actuator operates upon receiving a supply of the first drive current from the capacitor and a supply of the second drive current from the power source.SELECTED DRAWING: Figure 4

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.

An image processing method comprising acquiring a first fundus image obtained by photographing a fundus using first light having a first wavelength, and a second fundus image obtained by photographing the fundus using second light having a second wavelength that is shorter than the first wavelength; specifying, in the first fundus image, respective positions of retinal blood vessels appearing in the second fundus image; and generating a choroidal blood vessel image by processing the positions identified in the first fundus image.

The invention discloses a vibratory massage intelligent control eye care device, and belongs to the technical field of medical care equipment. The problems that an existing eye massager is single in function and cannot meet various scene requirements are solved, real-time monitored intraocular pressure, temperature and myoelectricity activity data are compared with threshold values to calculate error values, massage parameters are dynamically adjusted through a PID algorithm, it is ensured that the vibration frequency and intensity are always within a safe and effective range, and the effect of improving the quality of the eye massager is achieved. Therefore, the individuation and adaptability of the eye massage instrument are improved, and a patient is ensured to obtain comfortable and effective massage experience. By analyzing and calculating intraocular pressure, temperature and myoelectricity activity data and vibration frequency and intensity parameters of a patient, it is ensured that each treatment is adjusted based on the previous treatment effect, and therefore fine management and personalized adjustment of the eye nursing process of the patient are achieved; and the satisfaction degree of the patient and the pertinence and effectiveness of massage treatment are improved.

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.