396 results about "Intraocular lens" patented technology

An accommodating intraocular lens (AIOL) for implantation within a capsular bag of a patient's eye comprises first and second components coupled together to define an inner fluid chamber and an outer fluid reservoir. The inner region of the AIOL provides optical power with one or more of the shaped fluid within the inner fluid chamber or the shape of the first or second components. The fluid reservoir comprises a bellows region with fold(s) extending circumferentially around an optical axis of the eye. The bellows engages the lens capsule, and a compliant fold region between inner and outer bellows portions allows the profile of the AIOL to deflect when the eye accommodates for near vision. Fluid transfers between the inner fluid chamber and the outer fluid reservoir to provide optical power changes. A third lens component coupled to the first or second component provides additional optical power.

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.

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.

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 invention relates to a lens element (10), in particular for a spectacle lens, a contact lens or an intraocular lens, intended to be worn by a wearer, comprising:-at least a first zone (12) having a dioptric region having a front face and a rear face, the dioptric region having a refractive power based on a prescription of the wearer's eyes; -at least one microstructured second zone (13) outside said first zone (12) and configured for myopia or hyperopia control, said microstructured second zone (13) being characterized by a measurable surface spatial power spectral density PSDmeasure (f) such that, within a spatial frequency range between 0.3 mm-1 and 10 mm-1, formula (I), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula PSDnom is a nominal function defined by a Hann window, and f is spatial frequency. # imgabs0 #

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.

An accommodative intraocular lens includes a first lens part, a haptic, and a flexible membrane. The flexible membrane is arranged adjacent to a distal optical body surface, delimits a cavity together with the distal optical body surface and is transparent to light. A second lens part has a hollow cylinder coupled releasably to the first lens part, as a result of which the intraocular lens can be brought into a coupling state in which the second lens part is arranged on a distal side of the first lens part and the hollow cylinder is configured to deform the membrane by a longitudinal displacement of the hollow cylinder parallel to the optical axis. The hollow cylinder has on its exterior an outer face and a bearing face arranged adjacent to a proximal end of the outer face and encloses, with the outer face, an angle of less than 180°.

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.

The invention relates to an injector (1) for implanting an intraocular lens, the injector comprising a base body (10), an elongated operating element (11) partially extending into the base body from the rear side and being movably guided along an operating axis (12), wherein the movement of the operating element (11) into the base body (10) can be selectively generated by means of a pushing operation (R) along the operating axis (12) or by means of a screwing operation (S) around the operating axis (12), wherein the operating element (11) has an external thread (13) at least in one section. According to the invention, at least one spring arm (14) is arranged on a base body (10), the spring arm having a threaded engagement structure (15) on an inner surface facing the outer thread (13), wherein an adjustment element (16) interacting with the spring arm (14) is arranged on the base body (10) in a manner that it can rotate about an actuation axis (12) or can move along the actuation axis (12), wherein the adjustment element (16) cooperates with the spring arm (14) by means of operative contact, wherein at least one inner surface (17) participating in the operative contact is formed on the adjustment element (16) and / or an outer surface (18) is formed on the spring arm (14) in a manner that is inclined at an angle (α) relative to the actuation axis (12), so that a rotation or movement of the adjustment element (16) can produce an elastic deformation of the spring arm (14) towards the actuation axis (12) and away from the actuation axis (12), so that the threaded engagement structure (15) can selectively engage or disengage with the outer thread (13).

The crystal blank storage device comprises a mounting base and a plurality of storage plates, the mounting base is arranged in an L shape, the storage plates are mounted on the front side of the upper end of the mounting base in an inserted mode, a through hole is formed in the upper side of the front end face of the mounting base, guide pipes are fixedly mounted on the front end face and the rear end face of each storage plate, and the guide pipes are inserted into the through holes. An annular positioning seat matched with the through hole is fixedly installed on the rear end face of the guide pipe, a positioning ring is fixedly installed on the rear end face of the through hole, a rotating ring matched with the positioning ring is rotatably installed on the rear end face of the annular positioning seat, and a first spring is fixedly installed between the annular positioning seat and the rotating ring. A plurality of positioning clamping blocks which are attached to one another are installed between the annular positioning seat and the rotating ring in a sliding mode, the positioning clamping blocks are attached to the periphery of the guide pipe, and the positioning clamping blocks and the front side and the rear side of the positioning ring are obliquely arranged in a matched mode.

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.

An ophthalmic lens, such as an intraocular lens or a contact lens comprising an obscuration positioned centrally on the light transmissive body of said ophthalmic lens, coaxial with the optical axis, which has a diameter that is not greater than 50 percent of the diameter of the lens body is proposed. Use and methods producing therefor are also proposed according to the present disclosure. The lens, its use and method for producing said lens are targeted for people with age-related macular degeneration and geared towards regaining usable vision without excessively invasive procedures, and with a demonstrably higher rate of effectiveness and success.

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.

A polymeric lens is disclosed herein. In one or more embodiments, the polymeric lens includes a lens body formed from a polymeric material, the lens body comprising a central pinhole, the central pinhole being surrounded by a permanently darkened wall defining a visual axis, and the lens body being formed by 3-D printing or molding of the lens body from the polymeric material. A 3-D printed pinhole lens structure is also disclosed herein. In one or more embodiments, the 3-D printed pinhole lens structure includes an insertable pinhole body defining a through pinhole of 1-3 mm in diameter with a surrounding darkened wall having a 0.1-1 mm wall thickness, the insertable pinhole body configured to be inserted inside a lens body of an intraocular lens, a contact lens, a corneal inlay, or a lens of glasses, with a central hole of 1-3 mm in diameter, thereby creating an intraocular lens, a contact lens, a corneal inlay, or glasses with a central pinhole.

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 invention relates to a method for producing an intraocular lens (5), having the steps of providing a container (1) which is transparent to electromagnetic radiation (3); providing a liquid (2), which can be cured using electromagnetic radiation (3), in the container (1); generating and / or providing a data set (4) of images of an intraocular lens (5) with at least one cavity (6), wherein the images contain projections of the intraocular lens (5) with the at least one cavity (6) from different directions; tomographically printing the curable liquid (2) using electromagnetic radiation (3) on the basis of the generated and / or provided data set (4) in order to produce the intraocular lens (5) with the at least one cavity (6); and deactivating the ability to cure the curable liquid (2) in the at least one cavity (6). The invention additionally relates to an assembly (10) for producing an intraocular lens (5).

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.

Certain embodiments provide a method (20) of generating (240) a color corrected ophthalmic image. The method includes obtaining (210) an ophthalmic image of an eye (106) having a nuclear sclerotic cataract or having a colored intraocular lens ("IOL"). The method further comprises determining (220) color shift information associated with the ophthalmic image based on the user input and at least one of by processing the obtained image, the color shift information indicating a degree to which a color in the obtained image is to be corrected, to at least partially remedy the effect of nuclear sclerotic cataract or colored IOL on the color of the obtained image. The method further includes color correcting (230) the ophthalmic image based on the color shift information. The method further includes generating (240) a color-corrected ophthalmic image based on the color correction.