83 results about "Sclera" patented technology

To provide an ocular device for placement under an eyelid.SOLUTION: The ocular device includes a plate with a back surface having at least one protrusion, where the at least one protrusion has a convex contact surface to contact the sclera of the eye and to provide an offset space. The plate can be connected to an elongated support member. The ocular device can deliver, to an eye of a user, a material including, e.g., a pharmaceutically active agent. A case for holding and dispensing an ocular device includes a well configured to retain fluid, a stabilizer, and a lid. The lid is connected to the well and rotatable between a position covering the well and a position with the well uncovered. The lid can have a port for adding fluid to the well, and a receiver, which can hold an ocular device, can project from the lid.SELECTED DRAWING: Figure 7H

The application discloses an ophthalmic choroid burst hemorrhage principle teaching mold, a plurality of water injection holes are arranged on the upper portion of the mold on the choroid, a plurality of water injection pipes are arranged correspondingly to the water injection holes, the water outlets of the water injection pipes are communicated to the choroid and the retina through the water injection holes, the water inlets are gathered in the sclera external port for connecting with a syringe, so that the syringe is used to inject or suck out liquid, and choroid burst hemorrhage is simulated. The application also provides a use method of the mold. The ophthalmic choroid burst hemorrhage principle teaching mold and the use method thereof can simulate choroid burst hemorrhage caused by eye injury, intraocular surgery and the like, have strong simulation, can realize on-site operation, have strong intuitiveness, good visual communication effect, are easy to understand, are convenient to carry, are easy to use, and greatly improve the teaching effect.

The utility model provides a sclera outer pressing device for ophthalmologic operation, which comprises a handle, a pressing part is arranged at the end part of the handle, the pressing part is provided with at least two elastic pressing strips, one ends of the elastic pressing strips are separated from each other at intervals, the other ends of the elastic pressing strips are integrated, and a sliding sleeve is sleeved on the periphery of the handle. The sliding sleeve axially slides along the handle to drive the elastic pressing strip to be opened and closed. During use, the jacking part can form multi-point jacking, contact points of the jacking device and eyeballs are increased, the problem that the jacking part is prone to sliding in the surgical operation process is solved, and surgical operation efficiency and safety are improved.

The invention relates to the technical field of medical instruments for the ophthalmology department, and particularly discloses a preparation method of a biological membrane strip for sclera reinforcement after the ophthalmology department, the preparation method comprises multilayer stacking and edge folding fixing, and specifically comprises the steps that pretreated extracellular matrixes are stacked in multiple layers and placed in a mold, and then four corners are folded inwards to form a fusiform shape; then applying pressure to fix by using upper and lower plane clamping plates, wherein the pressure is 10-200kpa; drying with a mold to obtain a biofilm strip; the middle section of the biological membrane strip is widest and gradually narrows towards two ends in an arc-shaped transition manner; the total length of the biological membrane strip is 20-70mm, and the thickness of the biological membrane strip is 0.1-0.4 mm; the width of the middle section is 10-40 mm, and the length of the middle section is 10-60 mm; and the width of the two ends is 5-20mm. The edge mechanical strength of the prepared biofilm strip is superior to that of the middle section, and the biofilm strip can better meet the requirements of posterior sclera reinforcement surgery for material reliability and long-term stability.

The invention discloses a zebra fish optic nerve ligation model construction system and device, the system comprises an acquisition module, an anesthesia module, a placement platform and a ligation module, the acquisition module is used for acquiring target basic information; the anesthesia module is used for determining target anesthesia parameters according to the target basic information; performing anesthesia according to the target anesthesia parameters; the placing platform is used for placing target zebra fish; the ligation module is used for clamping sclera by using a sterile tissue clamping tool with a fine tip so as to expose optic nerves; the eyeball is lifted through a sterile tissue clamping tool, and supporting pieces are arranged on the two sides of the eyeball to expand the operation space; separating the optic nerve from the blood vessel of the eyeball through a separation tool; ligating the optic nerve through a ligature; and removing the supporting piece, and resetting the eyeball to obtain the zebra fish optic nerve ligation model. By adopting the embodiment of the invention, the zebrafish optic nerve injury and regeneration model for simulating the chronic inflammation environment can be constructed.

An ocular compression device with light directed through the sclera. The compression device may detachably house a lighting device that can be used to illuminate the eye area during ophthalmic surgery. Integrating the lighting device with the compression device during the procedure may reduce the number of hands required to perform the surgery. This may be particularly beneficial for ophthalmic surgery where the available surgical space is limited.

The invention discloses a sclera jacking puncture locator. The sclera jacking puncture positioner comprises a handle and a tube body, the tube body comprises a first section and a second section, the first section is bent by 25-35 degrees relative to the second section, the end, away from the first section, of the second section is connected to the handle, and the end, away from the second section, of the first section is provided with a jacking head; the puncture needle is movably arranged in the tube body and can stretch out of or retract into the jacking head. The jacking head can jack the sclera, the puncture needle can stretch out of the jacking head to puncture the sclera, after puncture is completed, the puncture needle retracts into the jacking head, and the tube body is provided with the first section and the second section which are oppositely bent, so that the situation that the tube body shields the visual field of a microscope can be reduced, and non-blind area operation is achieved conveniently; according to the sclera jacking and puncturing positioner, jacking and positioning can be achieved, sclera puncturing operation can be conducted, non-blind area operation can be achieved during puncturing, and therefore the puncturing precision can be effectively improved, retina damage is avoided, and the risk of complications such as bleeding is reduced.

The invention relates to a method for controlling an ophthalmic surgical microscope (2) with an OCT device (3), the method having the following steps: • carrying out a first OCT scan (30), wherein the first OCT scan is carried out such that only a part of a phakic intraocular lens (26) implanted in the patient's eye (11) and only a part of an anterior capsular bag wall (19) of the patient's eye are captured in the first OCT scan (30), • determining a first absolute value (B1) of a first geometric parameter in the first OCT scan (30) by means of an image processing device (5), • carrying out a second OCT scan (33), wherein the second OCT scan is carried out such that only a part of a cornea (13) or sclera (21) and only a part of the iris (14) adjacent thereto are captured in the second OCT scan (33), • determining a second absolute value (B2) of a second geometric parameter in the second OCT scan (33) by means of the image processing device (5), • forming a first result (E1) by performing a mathematical operation on the first absolute value (B1) and a predetermined first base value (BA1) and forming a second result (E2) by performing a mathematical operation on the second absolute value (B2) and a predetermined second base value (BA2), wherein the first result (E1) and the second result (E2) are calculated by means of a calculation device (6), • outputting an output on the basis of the first result (E1) and the second result (E2) by means of an output device (7).

An apparatus (200) includes a pair of rigid legs (210) extending parallel to each other along a plane. Each leg of the pair of legs has a sharp tip (215). The apparatus also includes a head (210) including a top surface (222), a bottom surface (224), a pair of end surfaces (226), a pair of side surfaces (227), and a guide notch (230) extending upwardly from the bottom surface. The guide recess is configured to mate with a surface of a sclera of a patient's eye to define a guide opening oriented transversely with respect to the plane associated with the leg and sized to receive a cannula having a generally flat profile. The head further includes a pair of receptacles (240) extending laterally inward from respective ones of the pair of side surfaces. Each receptacle of the pair of receptacles is configured to engage a placement instrument.

The invention discloses a carotid plaque auxiliary detection method and system based on sclera segmentation. The method comprises the following steps: firstly, collecting white eye image data to construct a data set, carrying out semantic segmentation labeling on an image in the data set, determining a deep learning model architecture for image segmentation, and carrying out model training based on a white eye image and a mask image corresponding to the white eye image so as to generate weight information for prediction; carrying out background, sclera and iris region segmentation on the image by utilizing the trained model, and carrying out post-processing on a segmentation result; and finally, carotid plaque auxiliary detection is carried out by utilizing sclera region features. The sclera image analysis is applied to auxiliary detection of carotid plaques, the health condition of the carotid artery can be indirectly evaluated through the white eye image, and the problems that a traditional image method is high in equipment dependence and high in detection cost are effectively solved.

This image processing device executes processing that includes: acquiring a tomographic image in the depth direction including choroidal blood vessels and sclera; executing emphasis processing that emphasizes a physical quantity indicating a brightness change in the depth direction in the tomographic image with respect to a partial region of the tomographic image; deriving an image feature amount pertaining to the brightness change in the depth direction in the emphasized region; and determining, on the basis of the image feature amount, a site on the tomographic image in which the image feature amount exceeds a predetermined threshold as a boundary between the choroidal blood vessels and the sclera.

The utility model discloses an ophthalmology health education tool which comprises a cornea puzzle block, an iris puzzle block, a crystalline lens puzzle block, a vitreous body puzzle block and a sclera puzzle block which are used for simulating the shapes of a cornea, an iris, a crystalline lens, a vitreous body and a sclera respectively. The cornea jigsaw blocks, the iris jigsaw blocks, the crystalline lens jigsaw blocks, the vitreous body jigsaw blocks and the sclera jigsaw blocks can be spliced to form an eyeball model; the sclera puzzle blocks comprise a first sclera puzzle block, a second sclera puzzle block and a third sclera puzzle block; the glass jigsaw blocks comprise a first glass jigsaw block, a second glass jigsaw block and a third glass jigsaw block; the crystalline lens puzzle blocks comprise the first crystalline lens puzzle block, the second crystalline lens puzzle block and the third crystalline lens puzzle block. The ophthalmology health education tool can simulate the shapes of cornea, irises, crystalline lenses, vitreous bodies and sclera, can be assembled to form three eyeball models simulating myopia, hyperopia and normality, and has education significance and interestingness.

Methods of treating an eye are provided that entail partially penetrating the sclera and delivering light energy from an optical fiber within the penetration to treat the a target tissue in the eye, for example, to coagulate vasculature underlying the sclera within a planned incision area. Also provided are treatment probes for treating an eye of a patient includes an elongate body that defines a handle and an advanceable penetrating member and optical fiber housed within the elongate body. The probe is configured to advance the penetrating member so as to penetrate the sclera, only partially, and advance the treatment fiber into the penetration to deliver treatment light energy to coagulate the vasculature underlying the sclera. The probe can include one or more penetrating members and corresponding optical fibers to form one or more penetrations concurrently within the planned incision area.

A shunt operable to be implanted on an eye is provided. The shunt includes a vein fluidic channel operable to be in fluid communication with an interior of the eye and operable to receive aqueous fluid from the interior of the eye. A body is fluidly coupled with the vein fluidic channel. A valve is disposed within the body and is operable to regulate intraocular pressure in the eye by opening and closing based on pressure from the aqueous fluid. A plurality of outlets are in fluid communication with the body opposite the vein fluidic channel in relation to the valve. The outlets are operable to release the aqueous fluid to the sclera of the eye.

The utility model provides a magnetofluid simulation eye. The magnetofluid simulation eye comprises a simulation eyeball, a substrate and a magnetic field generating device, the simulated eyeball comprises a transparent container and magnetic fluid in the transparent container. The front face of the transparent container faces a viewer, and the substrate is arranged behind the transparent container. The substrate is provided with color points. And the magnetic field generating device is positioned behind the substrate. When the magnetic field generating device is powered on and generates a magnetic field, the magnetic fluid in the container forms a simulated iris of the simulated eye when viewed from the front of the transparent container, and the substrate on the outer side of the magnetic fluid forms a simulated sclera of the simulated eye. According to the utility model, the magnetofluid is used as a simulated object visualization medium, so that the creative concrete expression of simulated object eyes can be realized, and more pleasure and emotional resonance are brought to the life of people.

An ophthalmic instrument (10) for crosslinking of the sclera (5) of an eye (1) is presented. The ophthalmic instrument (10) comprises a periocular arm (11) which extends from a proximal end (12) to a distal end (13) and which comprises a bend (14) to reach along at least part of an outer contour of the eye (1) with an inside face (15) of the periocular arm (11). An opening (16) is arranged through the inside face (15) at or near the distal end (13) of the periocular arm (11). A light delivery device (17) is arranged in the opening (16) of the periocular arm (11) to deliver light for local crosslinking of the sclera (5) of an eye (1) positioned adjacent to the inside face (15) of the periocular arm (11).

The invention provides a scleroscope device for noninvasive monitoring of an aqueous humor outflow coefficient, a monitoring method and a system, relates to the technical field of medical monitoring equipment for the ophthalmology department, and solves the problems that an aqueous humor outflow coefficient measuring method in the prior art is high in invasiveness, incapable of achieving continuous monitoring, insufficient in precision and poor in data synchronism. The sclera lens device comprises a sclera lens, the sclera lens comprises a central area, an edge landing area and a transition area connecting the central area and the edge landing area, and the edge landing area is used for making contact with the sclera of a user and providing support for the transition area and the central area; the phased array transducer matrix comprises a plurality of transducers which are annularly distributed in the transition area; the dynamic deflection control module is arranged in the transition area and is electrically connected with each transducer so as to control the excitation time delay of each transducer; the intraocular pressure monitoring module is arranged in the central area; and the signal processing module is arranged in the transition area.

A shunt operable to be implanted on an eye is provided. The shunt includes a vein fluidic channel operable to be in fluid communication with an interior of the eye and operable to receive aqueous fluid from the interior of the eye. A body is fluidly coupled with the vein fluidic channel. A valve is disposed within the body and is operable to regulate intraocular pressure in the eye by opening and closing based on pressure from the aqueous fluid. A plurality of outlets are in fluid communication with the body opposite the vein fluidic channel in relation to the valve. The outlets are operable to release the aqueous fluid to the sclera of the eye.

Device (2) for an ophthalmic illumination system (1) comprising a light instrument (3) for illuminating the intraocular space of a human or animal eye (33), wherein the device (2) comprises a housing (4) with a proximal housing end (5), a distal housing end (6), and an opening (7) in the proximal housing end (5), wherein the housing (4) defines a receiving space (8) which extends from the opening (7) in the proximal housing end (5) along a longitudinal direction (L) towards the distal housing end (6), and wherein the receiving space (8) for receiving the light instrument (3) is formed through the opening (7) in the proximal housing end (5), wherein the housing (4) comprises at least one translucent material at least in the region (10) of the distal housing end (6), wherein the device (2) is designed for indentation of the ocular tissue (34), in particular the sclera (9), wherein the distal housing end (6) with respect to a central longitudinal axis (A) of the housing (4) defines an opening angle (α) for emerging light of the light instrument (3) of approximately 110° according to EN-ISO 15752:2010, and wherein the distal housing end (6) is substantially dome-shaped or has the form of a sphere that is substantially flattened at least on one side, and / or wherein the housing (4) defines a canonical solid angle (β) in the region of the distal housing end (6) which is 2·π steradians, wherein this solid angle (β) forms a lateral surface of a right circular cone with a half, planar opening angle (α) of 90 degrees, such that within this solid angle (β) the radiance of the light (38) emerging from the region of the distal housing end (6) of the light instrument (3) is at least 60% of the radiance of the light (38) of the light instrument (3) within this solid angle (β).

The invention provides a prevention and control film for inhibiting eye axis growth and prevention and control glasses, and belongs to the technical field of myopia prevention. The light-transmitting diaphragm comprises a light-transmitting diaphragm and circular units arranged on the surface of the light-transmitting diaphragm in an array mode, each circular unit is of a concave-convex or concave-convex structure, the thickness of the light-transmitting diaphragm ranges from 0.9 mm to 1.1 mm, the diameter of each circular unit ranges from 180 micrometers to 190 micrometers, the distance between the circle centers of every two adjacent circular units ranges from 500 micrometers to 510 micrometers, and the distance between the circle centers of every two adjacent circular units ranges from 500 micrometers to 510 micrometers. A concave-convex structure on the prevention and control film can scatter and refract incident light to form atomization distribution, the discharge frequency of M-type retinal ganglion cells can be inhibited, retinal dopamine release can be promoted, then the activity of sclera fibroblasts is affected, and ocular axis growth is delayed. According to the invention, the excessive growth of the eye axis can be inhibited, so that the effect of increasing the hyperopia reserve of children or inhibiting the development of myopia is achieved.

Example embodiments relate to a computer-implemented method for generating an opto-mechanical model of a camera-type eye from ocular biometry parameters that define the anatomy of the camera-type eye; wherein the ocular biometry parameters comprise at least a pupil size (224) and an iris thickness (223). The computer- implemented method comprises obtaining a predetermined iris shape (220) and a predetermined ciliary body shape (230); anchoring (201) one or more data points (221) of an outer edge of the iris shape (220) to one or more reference points of the posterior corneal surface; transforming (202) the iris shape (220) as to respect the pupil size (224) and the iris thickness (223); anchoring (203) a first portion of the outer edge (250) of the ciliary body shape to a portion of an outer edge (225) of the iris shape; transforming (204) the ciliary body shape (230) such that a second portion of an outer edge (231) of the ciliary body shape coincides with a portion of the inner scleral surface (212); and generating (205) one or more polygons (261, 262) indicative for respective zonular fibres, wherein the respective one or more polygons are defined by at least two data points located on the crystalline lens surface (240) and at least two data points located on an inner edge (232) of the ciliary body shape.

An ocular access instrument (20) includes an attachment assembly (32) configured to engage a sclera of an eye, and an actuator assembly (34) configured to bear against the sclera. When the attachment assembly engages the sclera, movement of the actuator assembly inwardly against the eye displaces the choroid from the sclera, thereby creating an enlarged suprachoroidal space. The ocular access instrument may also include a needle guide (40) configured to receive the needle and guide the needle into the enlarged suprachoroidal space.

Systems and methods for eye image segmentation and image quality estimation are disclosed. In one aspect, after receiving an eye image, a device such as an augmented reality device can process the eye image using a convolutional neural network with a merged architecture to generate both a segmented eye image and a quality estimation of the eye image. The segmented eye image can include a background region, a sclera region, an iris region, or a pupil region. In another aspect, a convolutional neural network with a merged architecture can be trained for eye image segmentation and image quality estimation. In yet another aspect, the device can use the segmented eye image to determine eye contours such as a pupil contour and an iris contour. The device can use the eye contours to create a polar image of the iris region for computing an iris code or biometric authentication.

The invention relates to a cornea diameter determination method and device, equipment, a storage medium and a program product. The method comprises the following steps: acquiring an eye image of an examined eye acquired by a pupil camera, and determining eye tissue information corresponding to each eye tissue of the examined eye based on the eye image; determining an iris region and a sclera region according to the eye tissue information corresponding to each eye tissue; a sclera boundary is determined according to the iris region and the sclera region, a plurality of target pixel points are determined according to coordinates of pixel points on the sclera boundary and gradient values corresponding to the pixel points on the sclera boundary, and the target pixel points are pixel points with the gradient values being extreme values in pixel rows where the target pixel points on the sclera boundary are located; and determining the cornea diameter according to each target pixel point. By adopting the method, the accuracy of cornea diameter determination can be improved.

An ophthalmic assembly includes a frame, a flange, and a light emitter. The frame supports the optical lens. A first end of the flange is connected to the frame. The second end of the flange rests on a ciliary body flat region of the sclera of the patient's eye. A light emitter is connected to the flange proximate the second end to direct light into a vitreous cavity of the patient's eye. Light passes through the sclera at the flat region of the ciliary body, uniformly illuminating the vitreous body. A transscleral illumination system includes the ophthalmic assembly and a processor in communication with the light emitter. The setting of the light emitter may be controlled via a processor, for example in response to a user input signal.

Methods, systems, and techniques (e.g., in embodiments) are provided for rendering effects, such as makeup effects, that adjust the hue of the effect depending on the hue in the environment. The makeup effect can be rendered into an input image as a component of a virtual try-on experience. An operation can process the sclera of the eye to determine a reference hue and adjust the color of the effect toward warmer or cooler colors depending on the reference hue. A gloss effect can be calculated and rendered.

The invention relates to the technical field of medical teaching models, in particular to a pterygium resection operation teaching model. Comprising a hemispherical base and further comprises a simulation eyeball, a fixing mechanism, a micro-errhysis simulation system, a pterygium simulation block, a transfusion pipeline and a conjunctival graft, the simulation eyeball used for simulating a human eyeball is arranged in the hemispherical base, the fixing mechanism is arranged in the hemispherical base, and the fixing mechanism is used for fixing the simulation eyeball in the hemispherical base. The simulated eyeball is constructed by adopting a multi-layer composite material, the simulated eyeball comprises a simulated sclera, a cornea bionic layer (comprising a cornea epithelium layer, a front elastic layer and a matrix layer), a simulated iris, a simulated pupil and a simulated conjunctiva, and each layer of material simulates a real ocular surface tissue in transparency, elastic modulus and mechanical property; students can obtain tactile feedback and visual experience close to a clinical real operation in the operation process, and the reality sense and effectiveness of micromanipulation skill training are effectively improved.

The invention relates to a xerophthalmia eye massage instrument which comprises an eyeshade main body, an electric control unit is arranged in the eyeshade main body, and the eyeshade main body is provided with a head band used for being fixed to the head and a limiting groove; the eyelid heater comprises an eyelid heating module, and the eyelid heater is used for being inserted between the eyelid and the sclera of the user through the limiting groove; the massage mechanism is arranged on the eyeshade main body and is used for massaging eyelids in a reciprocating manner; the lifting mechanism is connected to the eyeshade main body and is used for driving the eyelid heater and the massage mechanism to jointly move relative to the eyeshade main body, so that a gap is formed between the eyelid heater and an eyeball sclera during treatment; the eyeshade body is further provided with an interpupillary distance adjusting mechanism, and the interpupillary distance adjusting mechanism is used for adjusting the positions of the eyelid heater and the massage mechanism in the horizontal direction so as to adapt to the interpupillary distances of different users.