17 results about "Artificial intraocular lens" patented technology

The invention provides a deep-learning artificial lens degree determination method and device for a equi syndrome patient and electronic equipment, and relates to the technical field of medical artificial intelligence, and the method comprises the steps: obtaining clinical data of the equi syndrome patient; preprocessing the clinical data of the equi syndrome patient to obtain an eight-dimensional feature data set; performing first-layer prediction on the eight-dimensional feature data set through a plurality of regression models to obtain a plurality of intraocular lens preliminary prediction degrees; and splicing the plurality of preliminary predicted degrees of the artificial lens with the eight-dimensional feature data set, and performing second-layer prediction on the spliced data to obtain a final predicted degree of the artificial lens. According to the method, the IOL degree of the CEL patient can be accurately and stably calculated, so that the technical bottlenecks of a traditional formula and an existing single AI model are overcome, and the success rate of an operation and the visual prognosis of the patient are assisted to be improved.

A system for selecting an intraocular lens (IOL) for implantation in an eye includes a controller adapted to selectively execute a finite element model (FEM) and a machine learning module. The controller is adapted to receive input data including one or more biometric parameters of the eye. Based on the input data, a plurality of capsule parameters are extracted via the machine learning module. The controller is adapted to determine an axial displacement factor, in part, based on the plurality of capsule parameters via the FEM. The axial displacement factor takes into account the predicted axial offset of the IOL after implantation in the eye. When calculating lens constant parameters using the FEM and machine learning module, the axial displacement factor can be incorporated into the final IOL power.

The application discloses an STM2457-PLGA nano drug, an artificial lens and a preparation method and application thereof, and relates to the technical field of biological medicine. The preparation method of the STM2457-PLGA nano drug comprises the following steps: preparing nano microspheres by injecting an oil phase comprising STM2457 and PLGA and a water phase comprising PVA into a microfluidic chip, and obtaining the STM2457-PLGA nano drug after freeze-drying of the nano microspheres, wherein the particle size of the STM2457-PLGA nano drug is 50-300 nm. The long-acting release of STM2457 carried by the surface-modified artificial lens is realized through the controlled release effect of the PLGA nano microspheres, and the slow-release period can cover the high-incidence period of postoperative complications of cataract surgery through process optimization, far exceeding the traditional short-term release system, and can continuously meet the long-term prevention and treatment needs after surgery, and effectively reduce the risk of complications such as after-cataract.

The invention relates to an injector (20) for inserting an intraocular lens (1) into an eye (10), comprising an injector axis (26), an injector body (30) which defines a folded chamber (21), an injector tip (22) with an opening (23), and a plunger (40) which is arranged in the injector in a longitudinally displaceable manner, the plunger is designed to move the plunger in an insertion direction (44) of the injector to deliver the intraocular lens out of the folding chamber into the injector tip and then out of the injector via the opening, the injector tip being chamfered in the region of the opening by the injector tip having an end face (27). The injector body has an end face which directly adjoins the opening and the normal and the injector axis enclose an end face angle which differs from 0 DEG, and wherein the injector tip is mounted so as to be pivotable about the injector axis and relative to the injector body and has an injector tip initial state and an injector tip end state, the injector tip can be brought from an injector tip initial state into an injector tip end state by pivoting about an injector tip angle in the injector circumferential direction (28) in relation to the injector axis, said angle being in the range of 90 DEG to 270 DEG.

A method of altering a refractive property of a crosslinked acrylic polymer material by irradiating the material with a high energy pulsed laser beam to change its refractive index. The method is used to alter the refractive property, and hence the optical power, of an implantable intraocular lens after implantation in the patient's eye. In some examples, the wavelength of the laser beam is in the far red and near IR range and the light is absorbed by the crosslinked acrylic polymer via two-photon absorption at high laser pulse energy. The method also includes designing laser beam scan patterns that compensate for effects of multiphone absorption such as a shift in the depth of the laser pulse absorption location, and compensate for effects caused by high laser pulse energy such as thermal lensing. The method can be used to form a Fresnel lens in the optical zone.

This application provides an analytical device for the combined Toric intraocular lens implantation effect, relating to the technical field of intraocular lens scanning. It includes an intraocular lens scanner with a display screen fixedly mounted on its top. Multiple detection modules can detect the Toric intraocular lens implantation effect from multiple dimensions. A data analysis module integrates and intelligently analyzes this data, achieving a comprehensive and accurate assessment of the implantation effect and providing doctors with more accurate diagnostic information. The device can provide diagnostic suggestions and treatment plan references based on the data analysis results, helping doctors develop more scientific and personalized treatment plans and improve medical quality. The human-machine interface display screen and voice prompt module make the device simple and convenient to operate, and the detection process efficient. It reduces the professional threshold for operators, shortens the detection time, improves medical efficiency, and provides patients with a better medical experience.

The present invention generally relates to a system for two-photon or multi-photon irradiating an artificial lens, preferably an intraocular lens preferably arranged within an eye of a patient and a method for locally adjusting a polarizability and / or a refractive index of an artificial lens preferably an intraocular lens preferably arranged within an eye of a patient. The method relates in particular to fabrication of optical profiles by adjusting polarizability through two- or multi-photon processes in a non-destructive manner.

The utility model discloses a packaging structure for an artificial lens. The packaging structure comprises a bottle cap, a bottle body and a lens holder, the bottle cap is detachably connected with the bottle body, the crystal support is detachably connected with the bottle cap, and the crystal support is suspended in the bottle body when the bottle cap is connected with the bottle body. The crystal holder comprises a connecting part and a clamping part, one end of the connecting part is detachably connected with the interior of the bottle cap, and the other end of the connecting part is connected with the clamping part; the clamping part is provided with a clamping groove and a pair of clamping hooks, the clamping groove is used for containing the intraocular lens, and the clamping hooks are arranged on the two sides of the clamping groove and used for suspending the intraocular lens in the clamping groove. The packaging structure disclosed by the utility model is simple in structure, can ensure that the intraocular lens is stably stored in the preserving fluid on the premise of preventing the intraocular lens from being damaged, and is convenient to store and take.

The invention relates to an accommodative intraocular lens comprising: - a fluid lens with an optical axis, wherein the fluid lens comprises: ◯ a first lens ring with a top, a bottom, and a lens outer wall, wherein a first cavity filled with fluid is located between the first lens ring and the lens outer wall; ◯ a first lens component comprising a first lens membrane and a second lens membrane enclosing a second cavity at least partially filled with fluid, wherein a third cavity is provided between the first cavity and the second cavity, connecting the first cavity to the second cavity; - an actuator formed in a ring shape around a central axis, wherein the actuator comprises: ◯ a first contact element configureda first proximal end of a contact element is configured to exert an axial pressure parallel to the optical axis on the upper surface of the first lens ring; a second contact element is configured to exert an axial pressure parallel to the optical axis on the underside of the first lens ring with its second proximal end; a third contact element is configured to exert a radial pressure on the outer surface of the lens with its third proximal end, depending on the position of the first and second contact elements.

The embodiment of the application provides a design method and device of an intraocular lens, and belongs to the technical field of lens design. The method comprises the following steps: obtaining a curved surface design parameter of a to-be-designed lens, and generating an initial aspheric surface design function of the to-be-designed lens according to the curved surface design parameter; obtaining an optical power influence parameter and an optical flat area influence parameter corresponding to the to-be-designed lens; generating a function based on the optical power influence parameter, the optical flat area influence parameter and the curved surface design parameter to obtain an optical power distribution function; performing a sag modulation on the initial aspheric surface design function according to the optical power distribution function to obtain a target aspheric surface design function; and generating an intraocular lens based on the target aspheric surface design function. The embodiment of the application can improve the flexibility of the intraocular lens in different use scenarios.

The invention discloses an effective crystalline lens position prediction method, system and device and a medium, and relates to the technical field of medical assistance, and the method comprises the steps: predicting an initial prediction value of an effective crystalline lens position according to eyeball biological parameters and target diopter of a user; determining a first optimization constant corresponding to the intraocular lens according to the intraocular lens selected by the user, and predicting the predicted adjustment amount of the effective lens position according to the first optimization constant in combination with the effective lens position correction equation; wherein the first optimization constant is obtained by iteratively optimizing an intraocular lens constant of the intraocular lens based on an SRK / T formula according to user acquisition data of the intraocular lens; the effective crystalline lens position correction equation is obtained by constructing a relation between a first optimization constant and an effective crystalline lens position through a regression method based on thick lens optics; and combining the initial predicted value and the predicted adjustment amount of the effective lens position to obtain an adjusted predicted value of the effective lens position.

The present invention relates to a container system (200) for storing an intraocular lens (90). The container system (200) comprises a container (210) for storing a lens (90) and a heating device (220) for heating the lens (90) in the container (210). A heated lens (90) is more supple and can be rolled up better and smaller, such that a cut opening in an eye can be further reduced.

A reversible intraocular lens (IOL) includes an anterior optical surface and a posterior optical surface. The anterior optical surface is configured to face a cornea of a user in a first orientation. The posterior optical surface is configured to face a cornea of a user in a second orientation. The reversible IOL provides a first spherical aberration correction in the first orientation and a second spherical aberration correction in the second orientation. The first spherical aberration correction is different from the second spherical aberration correction. Advantageously the reversible IOL can provide two different spherical aberration corrections based on orientation, two different optical powers based on orientation, a variable shift in spherical aberration based on orientation, a variable shift in optical power based on orientation, an EDOF or increased visual contrast at distance vision based on orientation, correction for higher levels of corneal spherical aberration, and a reduction in photic phenomena.

A computer-implemented method for recognizing deviations from plan parameters during an ophthalmological operation is described, the method including: providing video sequences of cataract operations, the video sequences having been recorded by means of an image recording apparatus, training a machine learning system using the video sequences provided and also, in each case, a planned refractive power of an intraocular lens to be inserted during a cataract operation and a target refraction value following the cataract operation as training input data and associated prediction results in the form of an actual refraction value following the cataract operation to form a machine learning model for predicting the actual refraction value following the cataract operation, and persistently storing parameter values of the trained machine learning system.

The application discloses a posterior chamber type artificial lens with a lens and a method for improving stability and communication capacity of the artificial lens. The artificial lens comprises an optical area and a supporting part, the supporting part is arranged outside the optical area, and a circular central hole is arranged in the center of the optical area; the supporting part comprises a closed haptic and haptic feet arranged outside the closed haptic, a haptic hole is arranged on one side of the closed haptic close to the optical area, an elliptical water guide hole is arranged on the closed haptic close to the haptic feet, the haptic feet are four in number, and positioning holes are arranged on the haptic feet. The elliptical water guide hole close to the haptic feet of the artificial lens can disperse pressure, reduce axial displacement of the artificial lens, keep the position relatively constant, and has high stability; the artificial lens has good communication capacity, the elliptical water guide hole is arranged between an iris and a lens anterior capsule, can make aqueous humor communicate smoothly, reduce contact with the iris and the anterior capsule, and reduce deposition of pigments on the surface of the artificial lens and in the chamber angle. The artificial lens can effectively prevent cataract, pupil block or angle closure glaucoma and the like.

A reversible intraocular lens (IOL) includes an anterior optical surface and a posterior optical surface. The anterior optical surface is configured to face a cornea of a user in a first orientation. The posterior optical surface is configured to face a cornea of a user in a second orientation. The reversible IOL provides a first spherical aberration correction in the first orientation and a second spherical aberration correction in the second orientation. The first spherical aberration correction is different from the second spherical aberration correction. Advantageously the reversible IOL can provide two different spherical aberration corrections based on orientation, two different optical powers based on orientation, a variable shift in spherical aberration based on orientation, a variable shift in optical power based on orientation, an EDOF or increased visual contrast at distance vision based on orientation, correction for higher levels of corneal spherical aberration, and a reduction in photic phenomena.

The invention relates to an intraocular lens selection method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: acquiring astigmatism information, meridian deviation information of a full corneal topography map, cornea high-order aberration information and a target angle parameter of an examined eye; wherein the target angle parameters comprise related parameters of a Kappa angle and related parameters of an Alpha angle; and according to the astigmatism information, the meridian deviation information of the full corneal topography map, the cornea high-order aberration information and the target angle parameter, determining an artificial lens selection result of the detected eye, wherein the artificial lens selection result is used for indicating the type of an artificial lens suitable for the detected eye. By adopting the method, the reliability and the accuracy of the selected type of the intraocular lens can be improved.