287 results about "Intraocular lens" patented technology

The invention relates to a computer-implemented method for calculating an intraocular lens (IOL). The method comprises calculating the IOL based on a biometric parameter of an eye to be treated with the IOL. Calculating the IOL involves taking into account the following: an expected change to the intraocular pressure as a result of treating the eye to be treated with the IOL compared to an intraocular pressure of the eye to be treated prior to treating the eye to be treated with the IOL; an expected intraocular pressure after treating the eye to be treated with the IOL; and / or an intraocular pressure prior to treating the eye to be treated with the IOL.

Systems and methods for compensating for tilt of an intraocular lens (IOL) and systems and methods for adjusting an IOL are disclosed herein. For example, one of the methods may include capturing one or more optical coherence tomography (OCT) images of a subject's eye while implanting the IOL within the subject's eye. The method may further include generating a fixation target such that the fixation target is visible to an eye of the subject; and moving the fixation target until the lateral plane of the IOL is perpendicular or substantially perpendicular to the optical axis of the ophthalmic system. The method may also include directing a laser beam generated by a laser of the ophthalmic system at the IOL.

Systems and methods for intraocular lens (IOL) selection using emmetropia zone prediction include determining pre-operative measurements of an eye, estimating a post-operative anterior chamber depth (ACD) of an intraocular lens based on the pre-operative measurements, estimating a post-operative manifest refraction in spherical equivalent (MRSE) of the eye with the IOL implanted based on the pre-operative measurements and the estimated post-operative ACD, determining whether the eye with the IOL implanted is likely to be in an emmetropia zone based on the estimated post-operative MRSE, re-estimating the post-operative MRSE of the eye with the IOL implanted using an emmetropia zone prediction model or a non-emmetropia zone prediction model based on the emmetropia zone determining, and providing the re-estimated post-operative MRSE to a user to aid in selection of an IOL for implantation in the eye.

Described are implementations of systems and methods for an improved machine learning-based system that incorporates pre-operative and intraoperative measurements captured during surgery, as well as additional patient-specific data, to provide an individualized, highly accurate post-operative manifest refraction prediction. According to some embodiments, a determination engine generates a predictive feature set of one or more predictors associated with diagnostic measurements of one or more eyes and performs a recursive selection operation using one or more combinations within the predictive feature set and one or more models to produce a most predictive subset, the most predictive subset having a highest prediction accuracy among other predictive subsets for post-operative manifest refraction. The determination engine generates a determination model by refining and retraining the one or more models of the recursive selection operation utilizing the most predictive subset.

The assembled intraocular tweezers comprise an outer cylinder, a lens bin and a lens clamping assembly, the lens bin is fixed to the front end face of the outer cylinder, the front end of the lens bin can be inserted into the cornea, and the lens clamping assembly comprises a wall cylinder slidably connected to the interior of the outer cylinder; a guide sliding seat slidably connected into the outer cylinder is arranged in front of the wall cylinder, a first spring is arranged between the guide sliding seat and the front wall of the outer cylinder, a fixing plate is arranged at the rear end of the interior of the wall cylinder, forceps rods are fixed to the front end of the fixing plate, and the forceps rods penetrate through the guide sliding seat and the front wall of the outer cylinder to extend into the crystal bin. And two elastic forceps heads are arranged at one end, extending into the crystal bin, of the forceps rod. Compared with the prior art, the surgical incision is small (the main incision does not need to be expanded), the anterior chamber operation is less, the intraocular lens is easy to take out, and the corneal endothelium injury is less; the method is also suitable for an intraocular lens falling into a vitreous cavity.

Disclosed herein are systems and methods for compensating for a tilt of an intraocular lens (IOL) and systems and methods for adjusting the IOL. For example, one of the methods can comprise capturing one or more optical coherence tomography (OCT) images of an eye of a subject when the IOL is implanted within the eye of the subject. The method can also comprise generating a fixation target such that the fixation target is visible to the eye of the subject and moving the fixation target until a transverse plane of the IOL is perpendicular or substantially perpendicular to an optical axis of an ophthalmic system. The method can also comprise directing a laser beam generated by a laser of the ophthalmic system at the IOL.

The present invention provides an intraocular lens comprising a power profile V that is accommodated within a power profile convergence region which is obtained from each combination of power profiles Va and Vb when a position ra is defined as the intersection on the horizontal axis between the power profile Va and the power profile Vb. The power profile Va, which is for a first region, is obtained by adding, to the vertical axis value at each horizontal axis value of an aspherical reference power profile W, a value that is obtained by multiplying, by a prescribed percentage α (where α is not less than 10% and not more than 50%) a value obtained by subtracting, from a base power, the vertical axis value at each horizontal axis value of the aspherical reference power profile W. The power profile Vb, which is for a second region, is obtained by adding, to the horizontal axis value at each vertical axis value of the aspherical reference power profile W, a value that is obtained by multiplying, by a prescribed percentage β (where β is not less than 10% and not more than 50%), a value obtained by subtracting, from the maximum value rmax of the horizontal axis of the aspherical reference power profile W, the horizontal axis value at each vertical axis value of the aspherical reference power profile W. The present invention also provides technology related to the intraocular lens.

Disclosed are ophthalmic lenses, ophthalmic lens components, and methods, systems, and apparatus for manufacturing an ophthalmic lens component. In one aspect, disclosed is an intraocular lens, comprising an optic portion and a haptic coupled to the optic portion. The haptic can comprise a haptic anterior portion and a haptic posterior portion. The haptic anterior portion can have an anterior surface roughness and the haptic posterior portion can have a posterior surface roughness. The posterior surface roughness can be greater than the anterior surface roughness such that at least part of the haptic anterior portion is smoother than the haptic posterior portion.

Silicone oil compositions contain a first copolymer composition having a first refractive index and a second copolymer composition having a second refractive index. The silicone oil compositions can be used in an enclosed cavity within a lens (e.g., intraocular lens) to match the refractive index of the refractive optical element in the lens.

A computer implemented method for determining a refractive power value of an intraocular lens to be inserted is described. The method includes measuring ophthalmological patient data, receiving a target refraction value, determining a first refractive power value of an intraocular lens to be inserted, with the measured ophthalmological patient data and the target refraction value being used as input data, determining, by means of a trained machine learning system, a second refractive power value of the intraocular lens to be inserted, the measured ophthalmological patient data and the received target refraction value being used as input data for the trained machine learning system, and determining the final refractive power value of the intraocular lens to be inserted from the first refractive power value and the second refractive power value by means of an individual boosting factor value.

The utility model relates to a drug reservoir (4) for an intraocular lens (1), having a drug, a through-hole (8), a first drug reservoir gap (23) communicating with the through-hole (8), a first connecting plate (25) defining the first drug reservoir gap (23), a first end face (31) defining the through-hole (8), and a second end face (32) arranged opposite the first end face (31) and defining the through-hole (8), the passage opening (8) has a first longitudinal end (34) in the region of the first end face (31) and a second longitudinal end (35) in the region of the second end face (32), the drug reservoir (4) having a displacement direction (15) oriented from the first longitudinal end (34) to the second longitudinal end (35), the first drug reservoir gap (23) is formed such that the through-hole (8) is accessible through the first drug reservoir gap (23) from the outside of the drug reservoir (4) in a drug reservoir radial direction (16) with respect to the displacement direction (15).

The invention relates to an intraocular lens continuous feeding device and an intraocular lens continuous preparation method, the intraocular lens continuous feeding device comprises a melting furnace, a growth furnace, a conveying pipe communicating the melting furnace and the growth furnace, and a controller, the top of the melting furnace is provided with a feeding part, and the feeding part is provided with an on-off valve; a liquid level measuring structure is arranged in the growth furnace, a lifting rod is rotationally arranged at the top of the growth furnace, and the cross section of an inner cavity of the growth furnace is circular; the bottoms of the inner cavity of the melting furnace and the inner cavity of the growing furnace are arranged in an equal plane, the conveying pipe horizontally extends and is connected to the bottoms of the side walls of the melting furnace and the growing furnace, so that a communicating vessel structure is formed inside the melting furnace and the growing furnace, and the extending direction of the conveying pipe is tangent to the outmost outline of the inner cavity of the growing furnace, so that mixed liquid enters the growing furnace in the tangential direction; and the controller is in sampling connection with the liquid level measuring structure and is in control connection with the on-off valve. The stability of the molten liquid in the lifting growth furnace is kept, and the purpose of industrially and continuously growing high-quality large-size crystals is achieved.

A medical device for sectioning an intraocular lens comprises a delivery element 220 having a lumen and a distal opening, and a sectioning element 400 configured to be housed within the lumen in a com

Provided is a hydrophilic pre-loaded intraocular lens injector, comprising an injector main body and an intraocular lens pre-loading device. The injector main body comprises a push cylinder, a push rod, and a push head. The push head is mounted at the front end of the push rod, and the push rod movably penetrates through the push cylinder and enables the push head to enter an implant device to inject an intraocular lens. The intraocular lens pre-loading device comprises an implant device and a crystalline lens box. An intraocular lens is pre-loaded into the implant device, and the intraocular lens is positioned and mounted in the implant device by means of a crystalline lens fixing block. The implant device is loaded into the crystalline lens box, and the push cylinder can be inserted into the crystalline lens box to be fixedly connected to the implant device, and can automatically detach the crystalline lens fixing block from the implant device. The intraocular lens of the present invention is pre-loaded in a sterile workshop of a factory, which can not only reduce the risk of contamination and infection, allowing patients to recover quickly, but also eliminate the tedious process of loading an intraocular lens by a doctor, thereby reducing the workload of the doctor.

The disclosure relates to an intraocular lens having an optic body and a haptic element including a thermoresponsive polymer having a transition temperature and particles that are magnetic and / or magnetizable. The disclosure additionally relates to a treatment apparatus including the intraocular lens and a magnet set up to subject the intraocular lens to a magnetic field that alternates with time.

The invention relates to the technical field of medical apparatus and instruments, in particular to an intraoperative viscoelastic agent suction instrument for intraocular lens implantation, which comprises a replacement host, a liquid supply pump, a suction pump and a controller electrically connected with the liquid supply pump and the suction pump, the replacement main machine is further provided with a liquid inlet and a liquid outlet which are communicated with the liquid supply pump, and a suction port and a liquid discharge port which are communicated with the suction pump. An input connector and an output connector are arranged at one end of the handle, a replacement pipe is arranged at the other end of the handle, a liquid adding hole and a suction hole are formed in the free end of the replacement pipe, the liquid adding hole is communicated with the input connector, and the suction hole is communicated with the output connector. By balancing perfusion and suction amounts, intraoperative intraocular pressure fluctuation is avoided, intraoperative intraocular pressure caused by high intraocular pressure or intraocular pressure caused by excessive suction is avoided, and therefore the risk of optic nerve or retina injury is reduced.

The utility model particularly relates to a cock device for intraocular lens processing, which relates to the technical field of intraocular lens processing, and comprises a base, the top of the base is fixedly provided with a holding table and an object holding table, the top of the holding table is provided with a plurality of groups of holding grooves in an array mode, and the cavity walls at the two ends of the inner sides of the holding grooves are symmetrically provided with clamping assemblies. A mounting beam is fixedly connected between the two ends of the top of the base, a transverse transmission device is arranged on the top of the inner side of the mounting beam, a longitudinal transmission device is fixedly connected to the bottom displacement end of the transverse transmission device, and a lifting assembly is fixedly connected to the bottom displacement end of the longitudinal transmission device. And the telescopic end of the bottom of the lifting assembly is fixedly connected with a motor I. According to the device, the clamping force of the clamping block is monitored in real time by means of mutual cooperation of the pressure assembly and the pressure sensor, and compared with manual twisting of workers, the situation that the bottle cap is not tightly twisted is reduced to a certain extent, and the working efficiency is improved. Therefore, the sealing performance of the glass bottle is effectively guaranteed.

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.

Intraocular lens loading devices and methods of use. In some embodiment the devices are used to sequentially splay first and second haptics while loading the intraocular lens into a delivery lumen.

The invention discloses a pressing push type built-in pigment marking pen, belongs to the technical field of medical marking tools, and is suitable for accurate cornea marking before ophthalmology astigmatism intraocular lens implantation operation. The pen comprises a pen cap, a pen holder, a storage tube, a locking plate assembly, a reset spring, a fine needle, a pen point and an annular sealing ring. The pen cap can axially move along the pen holder, an axial guide rib and a conical extrusion surface are arranged on the inner wall of the pen holder, the material storage tube is sealed and filled with biocompatible pigment, the locking plate assembly comprises three elastic clamping pieces, and the reset spring is pre-compressed and sleeved outside the fine needle. The pen cap is pressed to push the fine needle to overcome spring force to move, the locking plate assembly is opened under the action of the extrusion face to allow the fine needle to extend out, the clamping piece resets and locks the fine needle after loosening, and a slightly-sharp structure at the front end of the fine needle pierces the cornea tear film and adheres pigment to complete marking. The marking pen is accurate and stable in marking and convenient to operate, pollution is completely eradicated through the sealing design and the disposable property, and medical safety is guaranteed.

This invention provides a video matching method for uncertainty-aware navigation in ophthalmic surgery, comprising: performing anatomical structure segmentation and neighboring frame fusion matching based on ophthalmic surgical video sequences to obtain a highly reliable neighboring frame matching library; performing motion analysis and frame pair selection and pairing based on a full-frame anatomical segmentation mask to obtain a globally selected set of difficult sample frame pairs; constructing a spatial lookup table to generate a pseudo-label training dataset; performing uncertainty-guided contrastive learning to obtain a final uncertainty-aware matching network; calculating the final filtered rotation angle using a reference frame and the current frame; and updating the incision position, capsulorhexis range, and intraocular lens implantation axis to obtain a real-time superimposed navigation visualization result. This invention can significantly reduce the algorithm training cost, enhance robustness in complex surgical environments, solve occlusion and deformation interference, effectively suppress error accumulation in semi-supervised learning, and improve the absolute accuracy of matching.

The intraocular incision device comprises an operating handle, an incision guide rod and an incision elbow, the operating handle, the incision guide rod and the incision elbow are of hollow tubular structures and are communicated, an incision blade is fixed in an inner bent arc of the incision elbow, and a crystal binding device is movably arranged in a mode of penetrating through the incision guide rod and the incision elbow. The crystal binding device is connected with a crystal binding operation device; during use, a main incision and a secondary incision which are matched for use are formed in an eye, the incision elbow extends into the eye from the main incision and is arranged below an intraocular lens, the lens constraining operation device is rotated to release the lens constraining device, and the intraocular hook extends into the eye from the secondary incision to hook the lens constraining device on the cutting guide rod; when the intraocular lens is cut off, the intraocular lens binding operation device is rotated reversely, the cutting blade gradually makes contact with the intraocular lens until the intraocular lens is cut off along with tightening of the intraocular lens binding device, operation is stable, the speed is controllable, flaring is not needed, efficiency is improved, and damage is reduced.

The present invention relates to a posterior chamber phakic IOL (1) having an inherent arch height (89A) independent of its external diameter (81), and a method for manufacturing such an IOL (1).

This application discloses a method and electronic device for predicting intraocular lens (IOL) selection and rotation implantation, relating to the field of computer technology. This application acquires the user's ocular biological measurement parameters and constructs an intraocular geometric constraint region. The IOL is abstracted as a rectangular geometries, generating a set of candidate size-axis positions. Each candidate option satisfies the geometric constraints of the patient's intraocular anatomy in terms of implantation position and rotation angle. Based on this, by combining the geometric fit indices of the candidate options with individualized ocular biological parameters, the postoperative arch height, the probability of abnormal arch height, and postoperative refractive results are predicted. After post-processing and calibration, outputs with confidence intervals or risk probabilities are provided. This eliminates reliance on experience or rough estimates for surgical planning, effectively reducing the risk of arch height deviation or postoperative refractive errors, providing the optimal IOL option, and achieving individualized, quantifiable, and predictable implantation planning.

The utility model relates to a lens posterior capsule protection pad used in cataract super breast surgery, which comprises a folding intraocular lens protection pad and a traction rope, the folding intraocular lens protection pad is arc-shaped, can be folded and curled and is injected between a lens nucleus and a posterior capsule through an intraocular lens injector, and the traction rope is arranged between the lens nucleus and the posterior capsule. One end of the traction rope is fixedly connected with the folding intraocular lens protection pad, and the other end of the traction rope is fixed outside the eye. The foldable intraocular lens protection pad can be folded and curled and injected between a lens nucleus and a posterior capsule through the intraocular lens injector, the intraocular lens injector is an existing device, a special implanter is not needed, the production cost is greatly reduced, after the foldable intraocular lens protection pad is implanted, the injector does not need to be continuously used, and the production cost is greatly reduced. The surgical operation time is shortened, the risk that the protection pad cannot be smoothly recycled through an injector is reduced, and the foldable intraocular lens protection pad can be taken out from the anterior chamber through a traction rope after ultrasonic emulsification is completed.

An open capsular tension ring (10) for implanting in a capsular bag of an eye comprising a posterior surface (12) and an anterior surface (14) extending between a first end and a second end of the rin

A method of making an intraocular lens. The method including forming an anterior surface and an opposing posterior surface, the surfaces being disposed about an optical axis and providing an optic having a clear aperture. The method further including forming a central zone comprising a plurality of optical powers that progressively vary between a first optical power at a center of the central zone and a second optical power at a periphery of the central zone, the absolute value of the difference between the first optical power and the second optical power being between about 0.25 Diopter and about 1 Diopter. The method including forming outer zone disposed about the central zone, the outer zone comprising a third optical power, the outer zone extending from the periphery of the central zone.

The present invention discloses a reusable rotary intraocular lens injection system, including a metal injector and a straight introduction head. The metal injector consists of a main body, an injection rod, a rotating handle, a decorative cap, a top screw and a retaining spring. The front end of the main body is snap-connected to the straight introduction head, an intraocular lens is placed in an inverted S shape in the straight introduction head, the tail end of the main body is threadedly connected to the rotating handle, the tail end of the rotating handle is installed with a decorative cap, a guide hole is provided inside the main body, and the injection rod passes through the guide hole. The present invention is easy to operate, saves time and effort, has a uniform injection speed, high operational stability, and causes little damage to the patient. The metal injector is reusable, which is beneficial to reducing costs. The intraocular lens is implanted into the eye through the straight introduction head, avoiding damage to the lens caused by artificial lens installation. The lens does not need to be pre-folded when loaded into the straight introduction head, and the operation is simple. It has broad application prospects and is conducive to popularization and application.

The invention relates to a method for producing a toric intraocular lens (1) having an optical axis (10). The method has the steps of: a) providing a blank; and b) producing a first lens surface (2) and a second lens surface (3) which lies opposite the first lens surface (2) and through which light is to pass in order to optically image the intraocular lens by rotating the blank and thereby removing material from the blank using a first tool. The material is removed such that a first marking (4) is formed in the first lens surface and a second marking (5) is formed in the first lens surface (2) or the second lens surface (3), the markings characterize a meridian (6) of the toric intraocular lens, and the first marking (4) has an elevation (7) which protrudes from the first lens surface (2), a depression (8) which is introduced into the first lens surface (2), and / or a roughness region (9), said roughness region having a marking roughness of the first marking and said first lens surface (2) having a lens roughness which is present in an imaging region (13) of the first lens surface, said imaging region being situated at a distance to the first marking and the second marking.

A method for providing automatic placement of a lens in a cartridge is provided. The method includes seizing, by a nozzle head of a lifting tool, the lens from a pick position of a platform based on an air flow through the nozzle head and depositing, by the lifting tool, the lens at a delivery point in the cartridge by changing the air flow through the nozzle head. The method includes determining, by a processor coupled to the lifting tool, a location of a haptic of the lens with respect to a feature of the cartridge. The method includes adjusting, by the lifting tool, the haptic from the location to a target orientation on the cartridge when the location of the haptic is determined to be misaligned with the feature. The method can be implemented as an apparatus, a system, and / or a computer program product.