200 results about "Eyelid layers" patented technology

The embodiment of the invention provides a fatigue detection method and device based on time sequence self-attention and auxiliary supervision. Multi-dimensional features such as the eyelid aspect ratio, the mouth opening degree and the head turning angle of the face of a driver are extracted through face detection and key point positioning. A multi-layer self-attention coding network is innovatively constructed, two branches of trunk feature extraction and auxiliary supervision are included, and a dynamic change rule of a face state is captured by using a time sequence self-attention mechanism. An auxiliary supervision branch is introduced to predict each face parameter state, and a feature learning process is optimized through a multi-task loss function. According to the method, the limitation of traditional single feature analysis is broken through, accurate recognition of the fatigue state of the driver is achieved, and reliable technical support is provided for improving road traffic safety.

A portable, handheld device and electrodes deliver precise electrical stimulation to targeted areas around the skin of the face and eyelids to treat ocular conditions. The micro stimulation device generates microcurrent using a current generator. One or more electrodes are electrically coupled to the micro stimulation device and contact and conduct the microcurrent to the facial and / or ocular skin of a patient. The current generator is configured to generate the microcurrent at a selected one of a plurality of power levels, wherein the plurality of power levels includes: 250 microamps (μA), 500 μA, 750 μA, 1000 μA, 1250 μA, and 1500 μA. A first user input is configured for a user to select one of the plurality of power levels.

The invention relates to the technical field of civil aviation air traffic management, and discloses a pre-post air traffic controller fatigue objective prediction method and system, and the method comprises the steps: presenting a mental movement alertness task to a user; the method comprises the following steps: in the process of executing a mental movement alertness task by a user, acquiring eye image data containing the user through image acquisition equipment, and recording the response time and error rate of the user to the mental movement alertness task; calculating to obtain an eyelid closure parameter based on the eye image data; calculating a reaction time parameter and an error rate parameter based on the reaction time and the error rate; and determining a comprehensive fatigue value of the user based on a weighted combination of the eyelid closure parameter, the response time parameter and the error rate parameter. The invention aims to provide an objective fatigue prediction method and system for a pre-post air traffic controller so as to overcome the defects that a traditional subjective scale is insufficient in reliability, a standard objective test consumes too long time and is not suitable for pre-class rapid screening.

An apparatus for monitoring Intracranial Pressure (ICP) includes a non-invasive, flexible, wearable device (30), (60) with micro ultrasonic transducer arrays (32) fixed thereon. The wearable device (30), (60) is attached to the closed eyelid (21) of a conscious or unconscious patient with an adhesive (48). Using ultrasound sonography, the ultrasonic transducer arrays (32) on the wearable device (30), (60) image the optic nerve (26) behind the eyeball (20) to measure the Optical Nerve Sheath Diameter (ONSD). The ONSD provides an indication of the ICP in real time.

Dry eye treatment apparatus and methods are described herein which generally comprise a patch or strip affixed to the skin of the upper and / or lower eyelids to deliver heat or other forms of energy, pressure, drugs, moisture, etc. (alone or in combination) to the one or more meibomian glands contained within the underlying skin. The treatment strip or strips include one or more strips configured to adhere to an underlying region of skin in proximity to one or both eyes of a subject such that the one or more strips allow for the subject to blink naturally without restriction from the one or more patches. Moreover, the one or more strips may be configured to emit energy to the underlying region of skin and where the one or more strips are shaped to follow a location of one or more meibomiam glands contained within the underlying region of skin.

Disclosed herein are methods and systems for real-time detection of psychophysiological states from eye movement data. The methods involve capturing eye gaze vectors and eyelid openness levels over time using a user-facing camera. A sequence of discrete eye behaviors, including saccades, fixations, blinks, and long closures, is determined from the eye gaze vectors and eyelid openness levels. The sequence of discrete eye behaviors is transformed into a machine readable representation using a sliding time window. A mathematical or machine learning model then maps the machine readable representation of eye behaviors to one or more psychophysiological states. This approach provides a computationally efficient mechanism for predicting psychophysiological states by compressing gaze data into a continuous, numerical representation of eye behavioral events correlated with human psychophysiological states, including drowsiness, cognitive load, stress, and others.

Disclosed herein is a contact lens. Some disclosed embodiments comprise a lenticular aspect. In some instances the lenticular aspect varies in at least one of thickness, distance from the edge of the contact lens, or lenticular height along its length. In one aspect, a superior portion of the lenticular aspect attaches to an upper eyelid of a wearer by at least a portion of the lenticular aspect interacting with an upper tarsal plate of the upper eyelid of a wearer.

A meibomian gland therapeutic instrument comprises a machine body shell, a roller, an intermediate gear, a connecting rod, a connecting frame, a massage head and a bottom base plate, a part of the roller is exposed out of a notch of the machine body shell, a roller shaft of the roller is provided with a small gear rotating synchronously with the roller, the small gear is meshed with the intermediate gear, and the intermediate gear and the roller shaft are installed on the connecting frame together. The roller shaft is located at the front end of the connecting frame, the intermediate gear is located in the middle of the connecting frame, one end of the connecting rod is connected with an eccentric portion of the intermediate gear, the other end of the connecting rod extends out of the rear end of the connecting frame and is connected with the massage head, the roller is provided with a spring, and the bottom cushion plate is inserted between the eyelid and the cornea during treatment. Rotation of the rollers drives the connecting rods to swing through the pinions and the intermediate gears, and then the massage heads are driven to conduct pressing movement in the extending direction of the bottom cushion plate. And through the matched design of the roller, the intermediate gear and the connecting frame, the stability and compactness of the structure and the accuracy and reliability of operation can be improved.

The invention relates to the technical field of air traffic management, and discloses an in-post controller fatigue prediction method based on a work type and a circadian rhythm, and the method comprises the steps: obtaining a face video frame in a controller post, and carrying out the calculation to obtain a PERCLOS time sequence representing an eyelid closing proportion; obtaining an exogenous factor related to the control task; the PERCLOS time sequence and the ectogenic factors are coded and input to a trained time sequence neural network model, and the time sequence neural network model is configured to apply different weights to the work types, the circadian rhythms and the work requirements so as to carry out differential modeling; and generating a fatigue level curve covering a preset prediction time window based on the output of the time sequence neural network model. The invention aims to solve the technical problems that a fatigue monitoring method in the prior art is lagged in response and insufficient in adaptability to dynamic working scenes, and provides a method capable of actively and accurately predicting the future fatigue development trend of the controller.

The present invention discloses a method and device for imaging and processing meibomian glands, the method comprising: first transmitting a first ultrasonic detection signal to the eyelid region, then receiving a first ultrasonic echo detection signal reflected from the eyelid region; preprocessing the first ultrasonic echo detection signal to obtain a first meibomian gland ultrasonic image and first meibomian gland three-dimensional coordinate data; preprocessing the first meibomian gland ultrasonic image to obtain a first image recognition result; based on the first image recognition result and the first meibomian gland three-dimensional coordinate data, transmitting and processing ultrasonic energy to the target meibomian gland. The present invention can use ultrasonic waves to complete the imaging detection and processing of meibomian glands. The imaging detection does not require medical staff to turn over the patient's eyelids, and the practical operability is strong; ultrasonic waves can accurately process the meibomian glands and reduce ultrasonic exposure of surrounding tissues.

Devices and associated methods are described that provide needle extension / retraction with fine control, for in-situ needle advancement into biological spaces, thin cavities and tissues, such as those in the eye, for fluid / drug / material delivery or drainage. The device includes a distal end portion of the device with a lateral surface from which a needle extends when the lateral surface is adjacent to a biological surface, allowing injections in hard-to-reach locations, such as behind the eyelid and posterior to the superior or inferior orbital rim. In at least one embodiment, a needle advancement mechanism is also coupled to increase fluid pressure during fluid injection. In at least one embodiment light shone from the distal end portion of the device or through the needle bore helps to localize an injection site for a user looking inside the eye via changes in light intensity and / or light color depending on the needle tip depth.

Dry eye treatment apparatus and methods which include one or more patches or strips affixed to the skin of the upper and / or lower eyelids to deliver heat or other forms of energy, pressure, drugs, moisture, etc. (alone or in combination) to the one or more meibomian glands contained within the underlying skin. The one or more patches or strips may allow for the subject to blink naturally without restriction from the one or more patches or strips. The one or more patches or strips may be shaped to follow a location of one or more meibomiam glands contained within the underlying region of skin.

Controllers for dry eye treatment apparatus and methods are described herein which generally comprise a patch or strip affixed to the skin of the upper and / or lower eyelids to deliver heat to the one or more meibomian glands contained within the underlying skin. The treatment strip or strips include one or more strips configured to adhere to an underlying region of skin in proximity to one or both eyes of a subject such that the one or more strips allow for the subject to blink naturally without restriction from the one or more patches. A controller is in communication with the one or more strips and is programmable to monitor a temperature of the one or more strips to provide a treatment therapy above a threshold temperature of, e.g., 39° C., and below a maximum temperature of, e.g., 48° C., over a treatment period of 12 minutes.

The invention discloses a Parkinson's disease patient video analysis and evaluation system based on artificial intelligence. The method comprises the following steps: collecting a multi-modal data set; extracting face key point data in the multi-modal data set by using a Mediappe face detection algorithm, and analyzing blink frequency, eyelid movement symmetry and face muscle tension change; extracting a hand joint motion track through an OpenPose model, and calculating tremor frequency, motion completion time and motion smoothness; detecting step length, step width, step speed and coordination of left and right limbs in the gait of the human body based on a YOLOv8 target detection algorithm; dynamically weighting the facial tremor features, the limb movement features and the gait dynamics features through a multi-head attention mechanism; and outputting the symptom evaluation index of the Parkinson's disease patient through the LSTM network. And the efficiency and accuracy of illness state assessment are improved.

Systems, methods, and computer programs for eye tracking involving a camera that is operated according to eyelid position. In one embodiment, an inward-facing head-mounted camera captures images of an eye. A head-mounted device emits electromagnetic waves towards the eye and measures reflections of these waves from the eye. The average rate of reflection measurements is at least ten times the average rate of image capture. A computer detects the position of at least one of the eyelids covering the eye based on the reflection measurements. And the camera operation is adjusted according to the eyelid position in a manner that decreases, in the captured images, areas depicting the eyelids, and optionally increases areas depicting the iris.

An ophthalmic device pertaining to an exemplary embodiment example of the present invention includes a moving image acquisition unit, an image processing unit, and an evaluation processing unit. The moving image acquisition unit acquires a moving image of an eyelid of a subject. The image processing unit identifies a meibomian gland region from at least one frame of the moving image of the eyelid of the subject acquired by the moving image acquisition unit. The evaluation processing unit generates evaluation information about predetermined diseases on the basis of the meibomian gland region identified by the image processing unit.

The present application relates to a dry eye treatment system. Dry eye treatment devices and methods are described herein, which generally include a patch or strip that is affixed to the skin of the upper and / or lower eyelid to deliver heat or other forms of energy, pressure, medication, moisture, etc. (alone or in combination) to one or more meibomian glands contained within the underlying skin. The treatment strip includes one or more strips configured to be attached to an area of skin beneath one or both eyes of a subject adjacent to the subject, such that the one or more strips allow the subject to blink naturally without being constrained by the one or more patches. In addition, the one or more strips can be configured to emit energy to the underlying skin area and wherein the one or more strips are shaped to conform to the position of one or more meibomian glands contained within the underlying skin area.

A technique is provided for identifying correct or sufficient doses in a patient being treated with a drug for a neurological deviation condition. A method may include performing a plurality of fright response tests on a user, each test utilizing a device having a camera, a display, and optionally a speaker, and each test occurring at a different time after the user has been administered a medicament. The method may include receiving a plurality of images of at least one eye of the user from a camera during each test, and then calculating a magnitude of eyelid closure based on each image. The method may include determining a value of a correlation between a predetermined plasma concentration of the drug and the determined amplitude, and then determining whether a correct or sufficient dose has been reached based on the value of the correlation.

The invention discloses a meibomian gland heat shock interventional therapy device, and mainly relates to the technical field of medical equipment. Comprising a thermal shock intervention mechanism and an eyelid traction mechanism arranged on an operating bed, the eyelid traction mechanism comprises a movable frame arranged on the operating bed in a sliding mode, sliding blocks are symmetrically connected to the movable frame in a sliding mode, supporting rods are connected to the sliding blocks in a sliding mode, and eyelid hooks are arranged at the ends of the supporting rods. The hot shock intervention mechanism comprises a tube body and a piston arranged on the tube body in a sliding mode, a pressing block extending to the outer side of the tube body is arranged at the end of the piston, a needle head is arranged at the end of the tube body, and the hot shock intervention mechanism further comprises a heating wire arranged on the outer side of the tube body in a sleeving mode and connected with the needle head. The meibomian gland heating device has the advantages that the problem that part of lipid cannot be completely liquefied after meibomian gland cavities are heated is solved, the discharge efficiency of the lipid in the meibomian gland cavities is improved, and then the treatment effect on meibomian gland blockage is improved.

The eyelid massager 100 comprises: a handle 102 having a free end 104; and a roller 106 pivotally connected to the free end of the handle. The roller 106 is dumbbell-shaped, the curvature of the outer surface of the roller being matched to the curvature of the closed eye of the user such that during a massage action, the roller 106 comes into contact with the eyelid along the entire length of the eye to press a plurality of meibomian glands associated with the eyelid, promoting release of occluded grease. The handle 102 is Y-shaped 200 at the free end 104 to pivotally retain the roller 106 at both ends 204 by a pair of inwardly extending pins 202 that engage a pair of holes provided on the roller 106. The roller 106 is made of silicone rubber and a curved portion of the outer surface has a plurality of ribs 208.

The invention discloses an ocular surface image acquisition device and a working method, and belongs to the technical field of ophthalmic instruments. According to the invention, eyelids are opened through a mechanical structure in which an inverted U-shaped structure is matched with a gear and a rack, ocular surface images are collected through a CCD camera in a stable and controllable light source environment, the images are transmitted to a mobile phone or a computer terminal through Bluetooth, and ocular surface diseases are classified and identified by using a deep learning method based on image software. The device is simple to operate and low in cost, and can be operated, used and used only by a person to observe the ocular surface state.

An eyelid massager 100 includes a handle 102 having a free end 104, and a roller 106 pivotally coupled thereto. The roller 106 is dumbbell shaped having a curvature on an outer surface that matches curvature of a closed eye of the user, such that the roller 106 makes a contact with eyelids along an entire length of the eye during a massaging action, to press a plurality of meibomian glands associated with eyelids, facilitating release of clogged oils. The handle 102 is Y-shaped 200 at the free end 104 to pivotally hold the roller 106 at two ends 204 through a pair of inward extending pins 202 that engage with a pair of holes provided on the roller 106. The roller 106 is made of silicon rubber, and the curvature of the outer surface having a plurality of ribs 208.

The present invention provides an implant bracket for double eyelid plastic surgery and a method for using the bracket. The bracket is used to be implanted inside the upper eyelid to connect the skin and the tarsal plate, and includes: a main body, which is a cylindrical structure; a limiting part, which is arranged at one end of the main body and can protrude radially outward from the main body for limiting; a deformable claw, which is arranged at the other end of the main body and is made of a memory alloy material, and has two structures, a parent phase and a child phase; wherein the child phase structure of the deformable claw is vertically extended along the length direction of the cylinder of the main body or inclined toward the inner side of the cylinder of the main body, and the parent phase structure of the deformable claw is bent toward the outer side of the cylinder of the main body in the radial direction, and the deformable claw returns to the parent phase structure under human body temperature conditions. The bracket has a simple structure, a clever design, a simple and easy method of use, and does not require high technical skills from the operator; the bracket has a stable structure in the human body, is not prone to loosening, and has a long-lasting and stable double eyelid.

Controllers for dry eye treatment apparatus and methods are described herein which generally comprise a patch or strip affixed to the skin of the upper and / or lower eyelids to deliver heat to the one or more meibomian glands contained within the underlying skin. The treatment strip or strips include one or more strips configured to adhere to an underlying region of skin in proximity to one or both eyes of a subject such that the one or more strips allow for the subject to blink naturally without restriction from the one or more patches. A controller is in communication with the one or more strips and is programmable to monitor a temperature of the one or more strips to provide a treatment therapy above a threshold temperature of, e.g., 39° C., and below a maximum temperature of, e.g., 48° C., over a treatment period of 12 minutes.

Disclosed are methods of treating dry eye disease. More particularly, this disclosure relates to a method of treating dry eye disease comprising exposure of a palpebral conjunctiva of an eye followed by transconjunctival irradiation in the presence of a photosensitizer to initiate crosslinking in tarsal plate tissue underlying the palpebral conjunctiva.

The invention discloses an eyelid traction device for eye surgery, and belongs to the technical field of eyelid surgery traction equipment, the eyelid traction device comprises a brain back base plate, a multidirectional adjusting device for adjusting the traction equipment is arranged on the brain back base plate, a traction adjusting handle structure for clamping rotation is arranged on the multidirectional adjusting device, and an eyelid wound pulling device is arranged on the traction adjusting handle structure. The eyelid traction device for the eye surgery aims at reducing damage to the face caused by an overlarge eyelid surgical incision and ensuring that the surgical field is exposed to the maximum degree, the eyelid traction device for the eye surgery is provided, the position of the traction incision of traction equipment can be adjusted while the eyelid surgical incision is dragged, the traction angle and position can be changed according to needs, and the operation efficiency is improved. The frictional resistance between the traction equipment and the incision skin is ensured, and the surgical field is fully exposed.

The invention discloses a meibomian gland extrusion massager in the technical field of meibomian gland massage. The meibomian gland extrusion massager comprises a control clamping handle and a massage part, the control clamping handle is composed of an upper clamping handle and a lower clamping handle, elastic parts are connected to the inner sides of the ends of the upper clamping handle and the lower clamping handle in a clamped mode through clamping grooves, the upper clamping handle and the lower clamping handle form a V-shaped structure through the elastic parts, and the elastic parts can enable the upper clamping handle and the lower clamping handle to have elastic clamping force; the massage part comprises two massage pieces, and the two massage pieces are correspondingly arranged at the ends, away from the elastic part, of the upper clamping handle and the lower clamping handle respectively. The electric massage roller is attached to the surface of the eyelid to conduct rolling extrusion on the meibomian gland area, and grease in meibomian glands is gradually extruded and separated out by means of rolling acting force. Meanwhile, sterilized cotton fibers matched with the electric massage rollers are synchronously attached to the eyelids, grease separated out through extrusion is adsorbed in real time, the adsorbed grease can be clearly displayed on the sterilized cotton fibers, a user can conveniently and visually master the grease discharging condition, and grease is prevented from remaining on the eyelids.

Systems and methods for determining a degree of eye closure are provided. Lower and upper eyelid traces are obtained, each trace including locations of the respective eyelid for a plurality of consecutive time increments. A first and second window are determined, the first window preceding the second window and each window including a set of time increments in the plurality of consecutive time increments. An opening metric is generated comprising a measure of central tendency of differences between the locations of the upper eyelid and the lower eyelid across the time increments in the first window. An excursion metric is generated comprising a difference between a maximum and minimum location of the upper eyelid across the time increments in the second window. A closure degree score based upon the excursion metric and the opening metric is used to provide a degree of eye closure of the first eye.

This invention relates to the field of image edge detection technology, specifically to an eyelid detection system for assessing the orbicularis oculi muscle movement function in patients with myasthenia gravis. The system includes a video frame acquisition module, an iris morphology reconstruction module, an interference level acquisition module, a gradient map correction module, and an eyelid edge detection module. By acquiring video frame data of the patient's eyes, the system corrects iris deformation in the iris region of the target image frame corresponding to eye movement. Based on the corrected iris region, the system analyzes the interference of iris morphology on eyelid edge detection, determines the degree of iris deformation interference, and then corrects the gradient values ​​of gradient points in the same area corresponding to the corrected iris region in the gradient map of the target image frame during eye movement, obtaining a corrected gradient map. Based on the corrected gradient map, the system determines the patient's eyelid edge detection result. This invention effectively improves the accuracy of eyelid edge detection for patients.

The invention provides a liquid pipeline device for an eye heating head, and the device comprises a heating head connector which is used for connecting the eye heating head in a contact eyelid region in a use state; the pipeline channel is a liquid circulation channel, and the pipeline channel is connected with the heating head connector; the peristaltic pump is used for providing power required by liquid flowing; the temperature central control device is connected to the pipeline channel and is configured to control the temperature of the liquid; in the use state, the liquid pipeline device is connected with the eye heating head to form a closed channel, the peristaltic pump drives liquid in the liquid pipeline device and the eye heating head to flow circularly, and the technical bottlenecks of existing eye treatment equipment in the aspects of heating uniformity, temperature control precision and use cost are solved by optimizing heat conduction and temperature control.