137 results about "Intraocular lens" patented technology

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.

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.

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).

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.

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 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 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.

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 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.

Intraocular lens (IOL) designs include an optic having an anterior surface and a posterior surface surrounded by an optic edge. In some examples, the IOL has a plurality of haptics, each haptic attached to the optic at a gusset, where each gusset extends beyond the optic edge toward a center of the optic such that the gusset at least partially overlaps the anterior surface of the optic. In some examples, the IOL includes a ring structure integral with the optic and surrounding a perimeter of the optic edge, the ring structure having a thickness and the optic edge having a thickness, the ring structure thickness being greater than the optic edge thickness.

The utility model relates to an intraocular lens (1) comprising an optical body (2) having an optical axis (11) and a loop arm (3) attached to the optical body (2), in which the loop arm (3) has a radial cut-out (6) formed in one side of the loop arm (3) which is arranged outwardly in a radial direction (13) with respect to the optical axis (11). The intraocular lens (1) may have a drug reservoir (4) with a drug and a through-hole (8) in which a tab arm (3) is arranged, and which is arranged in a radial cut-out (6) wherein the tab arm (3) has a radial projection (10) projecting inwardly from the remainder of the tab arm (3) in a radial direction (13), the radial projection is arranged in the same area as the radial cut-out (6) in the circumferential direction (14) with respect to the optical axis (11).

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.

The application discloses a method for detecting the content of multi-component leachable of intraocular lens by liquid chromatography, comprising the following steps: preparing a series of standard solutions with different concentrations of the leachable of intraocular lens; performing gradient elution on the standard solutions of the leachable of intraocular lens by liquid chromatography to obtain chromatograms of the leachable corresponding to different retention times, and drawing standard curves of the standard solutions according to the concentration-peak area; adding the intraocular lens sample to be detected into an organic solvent and placing the sample in a water bath to simulate extraction to obtain a test sample solution of the multi-component leachable of the sample; performing liquid chromatography on the test sample solution to obtain a sample chromatogram; and using an external standard method to qualitatively and quantitatively analyze the leachable components in the test sample solution according to the sample chromatogram and the results obtained by the standard solutions. The method can qualitatively and quantitatively analyze multiple components at one time, has good chromatographic separation and linear relationship, high precision and accuracy, and is simple, rapid and efficient.

A system for forming an intraocular lens (IOL). The system includes a pulsed laser configured to produce a pulsed laser output and an optical device configured to form a focused laser output from the pulsed laser output and direct the focused laser output at an IOL containing a UV absorber compound. The focused laser output is configured to alter molecular bonds of the UV absorber compound to form a new or modified compound within the IOL that imparts a different refractive property in the IOL.

The utility model provides an intraocular lens fixing mechanism which comprises an upper operating handle and a lower operating handle, the upper operating handle and the lower operating handle are hinged to each other, a wafer pressing plate is arranged at the lower end of the upper operating handle, a base is arranged at the lower end of the lower operating handle, rotating shafts are arranged on the two sides of the base, a wafer cushioning plate is arranged on the base, and the wafer cushioning plate is arranged on the base. The two cushion wafers are arranged on the base in a left-right mode, and the two cushion wafers are fixedly connected with the rotating shafts on the two sides of the base respectively. According to the intraocular lens fixing mechanism provided by the utility model, the number of the pad wafers is two, and the angle between the pad wafers is changed, so that wafers with different sizes can be shoveled up, the fixing effect is better, and the cut-off crystal fragments can be taken out.

The present disclosure pertains to the phakic refractive lenses such as toric lenses, an advanced posterior chamber floating phakic refractive lens (PRL) designed for the correction of severe refractive errors, including myopia, hyperopia, and astigmatism. This innovative lens can reduce or minimize complications commonly associated with traditional phakic intraocular lenses, such as intraocular pressure elevation, cataract formation, and iris pigment dispersion. The phakic refractive lenses such as the toric lenses described herein feature a buoyant, flexible structure with a central aperture to facilitate aqueous humor flow, creating a natural centering force that stabilizes the lens within the pupillary space.

Methods and systems for predicting the post-operative effective lens position (ELP) of a prosthetic intraoccular lens (IOL) in cataract surgery using novel pre-operative measurement(s) of the natural lens curvatures.

The invention relates to an intraocular lens (10) comprising an optical body (11) and haptic elements (12) which are disposed on the optical body (11), wherein: a surface (14) of at least some of the haptic elements (12) has periodic surface structures (13) which are provided with recesses (60) at least in some portions; the recesses (60) are produced by means of a laser interference pattern (9); the recesses (60) have a width in a range of 1 µm to 4 µm, such that the surface (14) has hydrophobic properties with a contact angle of >100°; the surface (14) of the at least some haptic elements has superposed surface structures (15) which are formed from the periodic surface structures (13) provided with recesses (60) at least in some portions. The invention further relates to a method for producing an intraocular lens (10).

The invention relates to an intraocular implant (10) comprising: - a central body (12) generally hollow toroidal in shape and open towards the center of the central body (12), the central body (12) being configured to accommodate a secondary intraocular implant, in particular an intraocular lens; - at least two attachments (14) connected to the central body (12) and equally distributed around the central body (12) to allow attachment of the implant in the eye (1) of a patient, each attachment (14) comprising a proximal portion (14-1) relative to the central body (12) and a distal portion (14-2) relative to the central body (12), the proximal portion (14-1) being formed by an elastic loop attached to the central body (12) and the distal portion by an elastic anchoring element (14-2) comprising an elongated base (14-3) attached to the elastic loop (14-1) and an apex (14-4) oriented generally perpendicular to the base (14-3).Figure for the abbreviation: figure 3.

Presently disclosed is an accommodative lens system which comprises an intraocular lens with fast and precise response to the near triad. The system, with the help of sensor(s) and a processor, bilaterally measures the activarion of medial rectus, ciliary and pupil sphincter muscles and thus identifies the near triad, generating data to control the lens. In at least an embodiment, different accommodative powers can be added to the different sides of the lens, maintaining the integrity of the capsular bag which is known to be harmed with the prevailing technique known in the art.

The invention provides a laser measuring device for intraocular lens size detection, which relates to the field of intraocular lenses and comprises a base, a placement table, a fixing mechanism, a laser measuring instrument and a multi-axis movement mechanism, the placing table is fixed at the top of the base; the fixing mechanism is arranged on the placing table and is used for fixing an intraocular lens body to be tested; the laser measuring instrument is arranged above the fixing mechanism; and the multi-axis movement mechanism is arranged on the base, is in transmission connection with the laser measuring instrument and is used for driving the laser measuring instrument to move in a three-dimensional space. According to the laser measuring device for detecting the size of the intraocular lens, silica gel film adsorption and contact are adopted, scratches, indentations or stress concentration possibly caused by a metal clamp are avoided, the precise optical surface of the intraocular lens is perfectly protected, and real nondestructive clamping is achieved.

Embodiments disclosed herein generally relate to an intraocular lens including an anterior side, a posterior side opposite the anterior side, a lens bordered by an edge, and a pair of haptics including a first haptic extending radially outward from the edge of the lens at a first lens-haptic junction. The first haptic includes a first outer end, a first inner end, a first posterior surface extending from the first outer end to the first inner end on the posterior side, and a first radially extending member at the first lens-haptic junction that connects the first haptic to the edge of the lens. The first radially extending member includes a first relief cut on the posterior side that is anterior positioned relative to a posterior edge surface of the edge of the lens and the first posterior surface of the first haptic.

An IOL includes an optic having an anterior optic surface configured to receive light passing into an eye in which the IOL is implanted and a posterior optic surface opposite the anterior surface. The IOL includes at least one of refractive and diffractive structures configured to improve vision of the eye. A metasurface is configured to reduce reflection in the human visible spectrum from the anterior surface. The IOL further may further include a peripheral portion surrounding the optic, a metasurface may additionally or alternatively be formed on a peripheral portion and be configured to act as a filter to reduce transmission in the human visible spectrum into the peripheral portion through a peripheral anterior surface of the peripheral portion.

An intraocular lens the optical power map of which comprises at least one spiral track. There are at least a first and a second cross section of the spiral track the dioptric range of each of which is at least 0.5 dioptre. The average optical power of the first cross section is at least 0.5 dioptre apart from the average optical power of the second cross section.