1878results 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 the 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.

It is proposed a lens intended to be worn in front of or on an eye of a wearer and to provide a first refractive power (Rx) for correcting an abnormal refraction of the eye of the wearer; wherein the lens comprises a refractive area configured to provide the first refractive power (Rx) and a functional area configured to provide an optical function; and wherein on a first zone defined on the lens, more than 5% of the surface of said first zone has a local refractive power ranging from the first refractive power (Rx) minus 0.25 diopter and the first refractive power (Rx) plus 0.25 diopter, and more than 25% of the surface of said first zone covers the functional area.

The present technology relates to scalable fluid-filling systems for accommodating intraocular lenses (AIOLs) and methods of operating the same. Fluid-filling systems as disclosed herein include a vacuum enclosure, a positioning assembly positioned within the vacuum enclosure, a fill needle and a vent needle positioned proximate to the linear stage assembly, an actuator coupled to the fill needle, and a beam emitter and a camera positioned external to the vacuum enclosure. The positioning assembly can be controlled to move an AIOL base such that the vent needle or the fill needle is inserted. The actuator can be controlled to pump fluid through the fill needle and into the AIOL base. The camera can measure a degree of distortion of a beam emitted through the AIOL base by the beam emitter. An optical power of the AIOL base can be determined based on the measured degree of distortion.

Devices, methods and kits are described for reducing intraocular pressure. The devices include a support that is implantable within Schlemm's canal and that may restore or maintain at least partial patency of the canal without substantially interfering with transmural or transluminal fluid flow across the canal. The devices utilize the natural drainage process of the eye and may be implanted with minimal trauma to the eye. Kits may include a support and an introducer for implanting the support within Schlemm's canal. Methods may include implanting a support within Schlemm's canal, where the support is capable of restoring or maintaining at least partial patency of the canal without substantial interference with transmural or transluminal fluid flow across the canal.

Disclosed are adjustable accommodating intraocular lenses and methods of adjusting accommodating intraocular lenses post-operatively. In one embodiment, an adjustable accommodating intraocular lens comprises an optic portion and a peripheral portion. At least one of the optic portion and the peripheral portion can be made in part of a composite material comprising an energy absorbing constituent and a plurality of expandable components. At least one of a base power and a cylindricity of the optic portion can be configured to change in response to an external energy directed at the composite material.

The invention belongs to the technical field of regenerative medicine, and provides a circular cornea embedded micro lens, which comprises two areas, namely a first correction area and a plano area, preferably comprises three areas, namely two vision correction areas and a plano area, the two vision correction areas have the vision correction effect, the diopter of the plano area is 0D, and the diopter of the first correction area is 0 D, and the diopter of the plano area is 0 D; wherein the flat light area is provided with a through hole, and the applicant summarizes and finds that the through hole is formed in the center of the cornea embedded microlens, so that the phenomena of nebula and turbidity of the cornea after operation can be reduced. After the cornea embedded microlens provided by the invention is implanted, a patient can clearly see near objects and distant objects, so that clear vision is realized. The invention further provides a preparation method and application of the cornea embedded microlens.

The present technology relates to bases for multi-component accommodating intraocular lenses (AIOLs) and associated methods for making and using such devices. The bases configured in accordance with embodiments of the present technology can be configured to provide an optical correction that adjusts in response to accommodative forces from a patient's eye and can be formed from one or more first materials and one or more second materials. Compared to the first material, the second material can be less resistant to deflection / deformation, e.g., in response to forces from the patient's eye. Accordingly, including the second material in the base can increase the compliance of the base and, in at least some instance, increase the responsive of the base to accommodative forces from the eye.

An ophthalmic lens configured to correct and / or treat at least one condition of the eye (e.g., presbyopia, myopia, hyperopia, astigmatism, binocular vision disorders, night vision image quality, and / or visual fatigue syndrome) comprising: a base power profile; and at least one pulse selected to modify the base power profile.

There is provided an intraocular ring injector which allows an operator to stably and normally house the intraocular ring in the intraocular ring injector, which is an intraocular ring injector 20 with a container configured so that an intraocular ring injector 10 is housed in a container 4, for injecting an intraocular ring C into an eye for retaining a shape of a lens capsule,the intraocular ring injector comprising:a hollow body 1 having a hollow part in which the intraocular ring C is housed;a plunger 2 that moves through an inside of the hollow body 1 in an axial direction of the hollow body 1; anda pushing member 3 that pushes out the intraocular ring C by moving together with the plunger 2 through the inside of the hollow body 1 and toward front part of the hollow body 1 in the axial direction,wherein the container 4 has a moving mechanism of moving the hollow body 1 and the plunger 2 relatively in the axial direction, while housing the intraocular ring injector 10 in the container 4.

In certain embodiments, an ophthalmic lens includes an optic having an anterior surface, a posterior surface, and an optical axis. At least one of the anterior surface and the posterior surface includes a first zone extending from the optical axis to a first radial boundary and a second zone extending from the first radial boundary to the edge of the optic. The first zone includes an inner region and an outer region separated by a phase shift feature, the phase shift comprising a ridge extending outwardly from the inner region and the outer region.

Described herein, inter alia, are fluorosilicone polymers and copolymers; compositions comprising fluorosilicone polymers and copolymers; lenses, such as intraocular lenses, comprising fluorosilicone polymers and copolymers; and processes for making the fluorosilicone polymers and copolymers.

The present technology' generally relates to systems and methods for manufacturing accommodating intraocular lenses (AIOLs). In some embodiments disclosed herein, a self-aligning fixture assembly includes an anterior mandrel, a posterior mandrel, and an actuator coupled to move the anterior mandrel toward or away from the posterior mandrel. The anterior mandrel can be configured to hold an anterior component of an AIOL base. The posterior mandrel can be configured to hold a posterior component of the AIOL base. In some embodiments, the anterior or posterior mandrel includes at least one alignment feature configured to align the anterior component with the posterior component. In some embodiments, the anterior or posterior mandrel includes one or more apertures such that a vacuum source can apply a vacuum suction force to keep the anterior or posterior component adhered to the anterior or posterior mandrel oriented upside down.

An implantable or wearable lens for ophthalmic use, having a front surface and a rear surface, wherein at least one surface of said front surface and rear surface has an aspherical refractive profile with circular or rotational symmetry, or with cylindrical or non-rotational symmetry, with respect to the optical axis, and having a geometric elevation z(r) defined by a series expansion of Forbes polynomials, wherein said refractive profile generates an enhancement of the wavefront W(r) emerging from the lens such as to extend the depth of field thereof progressively and continuously in a power range between −1.0 D and 4.0 D.

Apparatuses, systems and methods for providing improved intraocular lenses (IOLs), include features for reducing side effects, such as halos, glare and best focus shifts, in multifocal refractive lenses and extended depth of focus lenses. Exemplary ophthalmic lenses can include a continuous, power progressive aspheric surface based on two or more merged optical zones, the aspheric surface being defined by a single aspheric equation. Continuous power progressive intraocular lenses can mitigate optical side effects that typically result from abrupt optical steps. Aspheric power progressive and aspheric extended depth of focus lenses can be combined with diffractive lens profiles to further enhance visual performance while minimizing dysphotopsia effects. The combination can provide an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile.

A lens configured for implantation into an eye of a human can include an optic including transparent material. The optic can have an anterior surface and a posterior surface. The anterior surface can be convex and the posterior surface can be concave such that the optic is meniscus shaped. Each of the convex anterior surface and the concave posterior surface can have a surface vertex. The optic can have an optical axis through the surface vertices and a thickness along the optical axis that is between about 100-700 micrometers. The lens can also include haptic portions disposed about the optic to affix the optic in the eye when implanted therein. The anterior and posterior surfaces can include aspheric surfaces.

The invention provides an intraocular lens with a lens eye, and relates to the technical field of medical instruments. The intraocular lens with the lens comprises an optical main body with a front surface and an aspheric rear surface; a support portion disposed around the optical body; and a transition portion disposed between the optical body and the support portion; the front surface and the rear surface of the transition part are respectively connected with the front surface and the rear surface of the optical main body, and the curvature radius of the front surface of the transition part is larger than that of the rear surface of the transition part. Apertures can be reduced, the imaging quality and stability can be improved, the safety after implantation can be improved, and the risk of blocking of the artificial lens is reduced.

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.

The hydrophilic preloaded intraocular lens injector comprises an injector main body and an intraocular lens preloading device, the injector main body comprises a push cylinder, a push rod and a push head, the push head is installed at the front end of the push rod, the push rod is movably arranged in the push cylinder in a penetrating mode, and the push head can enter an implanter to inject an intraocular lens. The intraocular lens preassembling device comprises an implanting device and a lens box, an intraocular lens is preassembled in the implanting device, the intraocular lens is positioned and installed in the implanting device through a lens fixing block, the implanting device is loaded in the lens box, and the pushing cylinder can be inserted into the lens box to be fixedly connected with the implanting device and can automatically separate the lens fixing block from the implanting device. The crystal is preloaded in a sterile workshop of a factory, so that the risk of pollution can be reduced, the infection opportunity is less, a patient recovers quickly, the tedious work of loading the crystal by a doctor is omitted, the workload of the doctor is reduced, and meanwhile, the probability that the crystal is crushed and flows into the body of the patient when the crystal is loaded into an instrument is also reduced.

A computer program is provided, comprising an artificial intelligence-based model, wherein the computer program is designed to, when executed by a computer, induce the computer, by means of the model, to determine a treatment plan for refractive eye surgery based on information characterizing a patient and information characterizing a refractive error in one of the patient's eyes that is to be corrected by means of refractive eye surgery.

Disclosed are adjustable intraocular lenses and methods of adjusting intraocular lenses post-operatively. In one embodiment, an adjustable intraocular lens can comprise an optic portion and one or more haptics. The optic portion can comprise an anterior element, a posterior element, and a fluid-filled optic chamber. At least part of the optic portion can be made of a composite material. The base power of the optic portion can be configured to change in response to an external energy directed at the composite material.

A transfer instrument (10) transfers a medical sheet (300) to a recipient site (402) of a heart (400). A transfer instrument (10) includes a first carrier member (18) including a first shaft (24) and a support portion (26), the support portion (26) including a support surface (46) on which the medical sheet (300) is placed, and a second carrier member (20) including a second shaft (54) and a pressing portion (50). The second carrier member (20) is movable relative to the first carrier member (18) so as to allow a pressing surface (64) of the pressing portion (50) to press, in a distal end direction, an outer edge surface (302) of the medical sheet (300) placed on the support surface (46).

To improve operability in an intraocular lens insertion instrument that can be used both by a rotation operation method and a pressure operation method.SOLUTION: An intraocular lens insertion instrument includes a cylindrical body 12, an extrusion member 50 for extruding an intraocular lens from a lens installation part 26 by moving the inside of the cylindrical body 12 in an axial direction, a pressing member 60 configured to be separated from the extrusion member 50 for moving the extrusion member 50 in an axial direction by pressing the rear end of the extrusion member 50 along the axial direction, and a mechanical transmission mechanism for converting the drive by rotation operation of a rotation member 70 into a linear movement. The intraocular lens can be extruded by moving the extrusion member 50 forward independently of the pressing member 60 by the rotation operation R of the rotation member 70 in the mechanical transmission mechanism.SELECTED DRAWING: Figure 2

The invention provides an ICL postoperative arch height prediction and adjustment method and device, and the method comprises the steps: a data obtaining step: obtaining eye anatomical data of a patient, including the diameters of a short axis and a long axis of a ciliary sulcus; acquiring state data of the current implanted ICL, wherein the state data comprises a nominal size and a rotation angle in an eye; a geometric modeling and calculation step: establishing a two-dimensional geometric model of the ICL in the elliptical ciliary sulcus based on the nominal size of the ICL and the diameters of the long and short axes of the ciliary sulcus, calculating the diagonal length limited by four supporting leg points of the ICL on the model according to the rotation angle of the ICL in the eye, and further calculating the theoretical geometric arch height; and an adjustment scheme generation step: on the basis of the calculated theoretical geometric arch height, generating at least one secondary operation adjustment scheme for adjusting the actual postoperative arch height to be within a clinical ideal range, the adjustment scheme comprising rotating the current ICL to a new angle or replacing the current ICL with another ICL with a different size.

The utility model belongs to the technical field of medical instruments, and particularly relates to an artificial lens for people with color vision disorder. The surface of the intraocular lens is a spherical surface or at least one surface is an aspheric surface or at least one surface is a discontinuous surface, the intraocular lens is colored and at least uses one coloring dye, and the coloring range of the intraocular lens at least comprises part of an optical area. According to the intraocular lens, at least one inhibition band exists in the wavelength range of 380 nm to 780 nm of the spectrum transmittance of the intraocular lens, and the minimum value of the spectrum transmittance in the inhibition band is lower than the nearest peak value of the spectrum transmittance in the wavelength range of 380 nm to 780 nm, so that the situation that the surface roughness is too high due to film coating is avoided, cell deposition on the surface of a film layer is avoided, the color vision correction safety is improved, and the color vision correction efficiency is improved. The correction effect of color vision correction is guaranteed, the problem that the surface reflectivity is high due to the fact that the surface of the artificial lens is coated with a film is effectively solved, optical interference is prevented, the retina is prevented from receiving stray light, and the signal-to-noise ratio of a retina image is prevented from being reduced.

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 electroactive lens with raised resistive bridges is disclosed. The resistive bridges can connect many ring electrodes in an electroactive lens with a relatively small number of bus lines. These resistors are typically large to prevent excessive current consumption. Typically, they are placed in the same plane as the ring electrodes, which means that the ring electrodes are further apart or made discontinuous to accommodate the resistors. But further separating the ring electrodes or making them discontinuous degrades the optical quality of the lens. Placing the ring electrodes and resistors on layers separated by an insulator allows the ring electrodes to be closer together and continuous and have a high enough resistance to limit current consumption. It also relaxes the constraints on feature size and placement during processing to make the lens. And because the resistors and electrodes are on different planes, they can be formed of materials with different resistivities.

Medical devices are provided, comprising a medical device and a sensor.

The invention provides a lens eye intraocular lens based on spatial filtering and a preparation method thereof.The lens eye intraocular lens comprises an optical body, and the optical body comprises an optical surface and an optical surface with a spatial filtering structure; the spatial filtering structure satisfies a filtering function capable of changing the spatial frequency spectrum of the imaging light beam to expand the focal depth. The imaging process generally refracted from geometrical optical light is used as the imaging process of wavefront transformation, and the optical surface with the spatial filtering structure is introduced into the intraocular lens with the lens to serve as a filter to change the filtering function of the filtering structure, so that the spatial frequency spectrum structure of an imaging light beam can be changed, and the purposes of expanding the focal depth and improving the imaging efficiency are achieved. Dynamic vision is enhanced, and the effects of correcting myopia and presbyopia are achieved; and a better visual effect is achieved. The tolerance to bad effects such as eccentric inclination and the like is high; the structure is simple and the stability is good.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing symmetric or asymmetric optic with aspheric surface which redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the intraocular lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.