57 results about "Lens implant" patented technology

An accommodating intraocular lens where the optic is moveable relative to the outer ends of the extended portions. The lens comprises an optic made from a flexible material combined with extended portions that is capable of multiple flexions without breaking. The optic has a central area of increased power of less than 1.0 diopter aid near vision. A method is disclosed of implanting the present lens in the non-dominant eye of a patient.

An intra ocular lens arrangement having positive and negative lens elements which move during the eye's accommodation response in order to improve the image on the retina of objects viewed by the eye over a wide range of distances. The positive and negative lens elements either can be linked mechanically to constrain their relative movements or not linked. The lenses are positioned by an operating surgeon following cataract extraction in either the eye's ciliary sulcus or lens capsule. Alternatively, one of the lenses may be inserted into an eye that already has a lens implanted therein to further improve a person's vision. An improved intra ocular lens has is an optic lens having at least two pairs of haptics that controls the movement of the optic lens along the optical axis of the eye in response to the movement of the ciliary muscle of the eye acting on the haptics during the accommodation response, one pair of haptics having one end hinged to the lower half of the optic lens and the second end connected to an upper portion of the ciliary muscle, and a second pair of haptics hinged to an upper half of the optic lens and to a lower potion of the ciliary muscle.

An intraocular lens having an anterior lens member (48) presenting an anterior light-converging optic (52) and a posterior lens member (50) presenting a posterior light-diverging optic (68) for magnifying an observed image onto large regions of the retina (32) to permit central focus in patients suffering from AMD and a method of implanting the lens into the human eye (10). The anterior light-converging optic (52) is operably coupled with a flexible body (58) which extends radially therefrom and presents opposing bights (62) presenting termini (66) when the lens is viewed in cross-section. The posterior light-diverging optic (68) is operably coupled with an annular flange (76) which is arcuate in cross-section and mates with termini. Both the anterior and the posterior lens members (48, 50) have positioning holes (70, 80) formed therein permitting surgical implantation thereof. The IOL (46) is constructed of a flexible synthetic resin material such as polymethylmethacrylate and permits focusing upon objects located near to and far from the viewer.

A refractive intraocular lens (104) and method of locating the lens within the eye and attaching the lens to the iris. The refractive intraocular lens (104) may be attached via a staple (230), a fastener (312), anchor (412) or by the tip of the haptic (118).

The present invention provides methods of treating an eye disorder. The methods comprise a step of locally administering a Clostridial toxin to the eye of a patient to treat the disorder. The eye disorder may be associated with an inflammation of the eye, including for example, bacterial conjunctivitis, fungal conjunctivitis, viral conjunctivitis, uveitis, keratic precipitates, macular edema, and inflammation response after intra-ocular lens implantation. The Clostridial toxin may be produced by a Clostridial beratti, a Clostridia butyricum, a Clostridial tetani bacterium and / or a Clostridial botulinum.

An intraocular lens implanting device capable of inserting an intraocular lens surely in safety into an eyeball and having an ophthalmic hooking function capable of adjusting the position of the intraocular lens. The intraocular lens implanting device for inserting an intraocular lens into an eyeball through an incision in the eyeball tissue comprises a tubular main body, a storage part for the intraocular lens integrated with the main body or separated therefrom, and a plunger for pressing the intraocular lens placed in the containing section and discharging it into the eyeball, wherein the distal end of the plunger has a base part and a protuberance.

A method of manufacturing an intraocular lens inside a capsular bag after the natural lens has been removed employs a sealing device comprising a plug part adapted to seal a rhexis in a capsular bag, thus preventing displacement through the rhexis of a lens-forming liquid material injected through the rhexis and adapted to replace the natural lens and form an intraocular lens implant. The plug part has a slightly larger area than the capsulorhexis and is made of a deformable polymer. The sealing device further comprises an adjusting means connected to the plug part and adapted to position the plug part to a desired location.

The invention provides a medical device and method to reduce the occurrence of pseudophakic pupillary block following implantation of an intraocular lens. The device includes an intraocular lens configured with channels traversing through the surfaces of the lens optic. The invention includes special edge angulations and locations in the optic zone that eliminate optical distortion from channels. The channels perform as valves configured to allow flow of a patient's aqueous humor from one surface of the lens through to the other surface of the lens, thereby preventing fluid pressure from building up in a patient's eye.

Intraocular lens implant that includes a lens optic and lens haptics configured to maintain a preoperative position of the posterior lens capsule after cataract removal and insertion of a lens implant. The lens haptics have proximal and distal portions, with the distal portions lying in a common plane and the lens optic extending in a lens optic plane. The distance between the planes may be at least substantially the same dimension as or larger than a shift distance that the posterior lens capsule would otherwise traverse between its normal anatomical location and its shifted anatomical location where it not constrained. The shifted anatomical location arises naturally after both removal of cataract lens material and removal of a portion of an anterior capsule.

The invention relates to an accommodative lens implant controlled by the ciliary muscle, consisting of at least one or more lenses made of preferably biocompatible material and disposed on a common optical axis, the at least one lens being a component of a flexible, closed implant body that is transparent in the region of the actual lens, is engaged at its outer periphery with the ciliary muscle, and has a main axis that coincides with the visual axis, and in addition at least part of the implant body with the lens or lenses comprises a fluid filling, such that the axial position of the lens or the lens system can be altered by activation of the ciliary muscle, the implant body being inserted in the sulcus of the posterior chamber of the eye or attached to the ciliary muscle.

A lens implant serves to replace the lens body of an eye and possesses substantially the same size and shape. It is elastic such that the eye gets back its capability for accommodation. The lens implant has two parts with differing refractive indices and / or differing shapes, which allows to adapt the focal length and shape to specific requirements in simple manner. A distal part is prefabricated as pre-made lens part, while a proximal part can preferably be brought into the lens capsule in a flowable state.

The present invention provides a hydrogel-based intraocular lens (IOL) implant that can covalently attach to a lens capsule on implantation into an eye. The inventive IOL has a high refractive index, high elasticity, and is of a similar size to a naturally occurring lens. In addition, the IOL can be implanted in a smaller, dehydrated state, allowing the IOL to be placed in the lens capsule with a small incision (up to about 1 / 10 the volume of the IOL). Exposure to fluid can then initiate rapid swelling of the dried polymer to the shape and dimensions of a natural lens, with full occupation of the lens capsule. Upon equilibrium swelling, the IOL can then make contact with the inner aspect of the lens capsule and covalently bind to it. By this attachment process, the IOL may accommodate in a manner identical to that of the natural lens.

A refractive intraocular lens (104) and method of locating the lens within the eye and attaching the lens to the iris. The refractive intraocular lens (104) may be attached via a staple (230), a fastener (312), anchor (412) or by the tip of the haptic (118).

A presbyopia correcting intraocular lens implant for implanting in a human eye includes an implant body having a central lens enclosure and at least one stability tab extending therefrom. At least one ciliary body sensor senses movement of the eye's ciliary body. An electronic module is embedded in the implant body and includes a microprocessor communicative with the ciliary body sensor. A dynamic lens assembly is housed in the central lens enclosure and has a dynamic range of continuous accommodation. The lens implant also includes a renewable intraocular power supply.

An accommodating intraocular lens implant for implantation in a human eye, including an optic adapted for coaxial alignment with a vision axis of the human eye, and at least one haptic. The haptic includes an anchor portion for receipt in one of a periphery of a capsular bag of the human eye, a cilairy sulcus of the human eye, and an angle of the anterior chamber of the human eye, and a sinuous portion extending radially from the optic and including a proximal end connected to the optic, a distal end spaced from the optic and connected to the anchor portion, and at least four curves successively connected between the proximal end and the distal end. The sinuous portion is adapted to flex upon ciliary muscle action to move the optic along the vision axis and allow the intraocular lens implant to automatically accommodate.

Small aperture (pinhole) intraocular implant to increase depth of focus comprising a diaphragm juxtaposed to the front surface of a lens implanted previously, having its anterior surface convex and its posterior surface concave. The diaphragm is held in position by inserting engaging means in the ciliary sulcus.It is proposed that said diaphragm is opaque to a visible light spectrum and transparent to light in the infrared range and is equipped with passage means of visible light in its central region, such as a through hole whose diameter is between 1 mm and 2.5 mm.The constriction of the incident light rays increases the depth of focus, featuring a pinhole effect. The engagement means may be provided by two handles shaped with curved proximal ends joined to the peripheral edge of said diaphragm and having substantially circular section with a diameter between 80 μm and 800 μm or two handles of the same material as the diaphragm and constituting an extension of this edge, or even one elongated platform whose center is located in the small-diameter circular opening.

The invention relates to a intraocular lens. At present the Poly-Methyl Methacrylate (PMMA) intraocular lens conventional for clinical treatment of cataract always causes inflammatory treaction after implantation. Posterior capsule opacification is also a major compalication after cataract surgery. The invention selects fluorouracil to solve the above problems. Based on weak penetrating force of chitosan nanoparticles in eyes and the relation between the phagocytosis amount of conjunctival epithelial cells to nanoparticles and the particle size of nanoparticles, the fluorouracil nanoparticles preparation is prepared using chitosan-poly(acrylic acid) as carrier, composite coated on the surface of PMMA intraocular lens. The invantion also provides a preparation method thereof. The said intraocular lens not only increases the biocompatibility of the intraocular lens, but also inhibites posterior capsule opacification pafter cataract surgery. The said intraocular lens can also prevent anterior membrane after implantation of intraocular lens and after-cataract.

The present invention relates to a method of altering the refractive properties of the eye, the method including forming a pocket in a cornea of an eye of a patient so as to gain access to tissue bounding the pocket; after the pocket in the cornea has been formed, applying a photosensitizer inside the pocket so that the photo sensitizer permeates at least a portion of the tissue bounding the pocket, the photosensitizer facilitating cross-linking of the tissue bounding the pocket; inserting a lens implant into the pocket so as to change the refractive properties of the eye; and irradiating the cornea so as to activate cross-linkers in the portion of the tissue bounding the pocket and thereby stiffen the cornea and prevent corneal ectasia of the cornea.

The CCUTTER is an innovative ophthalmologic surgical instrument that greatly facilitates the performance of cataract surgery. Cataract surgery is the most frequently performed surgery in the United States, with over one million cataract surgeries done each year. A cataract is a clouding of the eye's internal lens, which interferes with the individual's ability to see clearly. During surgery, a continuous circular tear (called capsulorhexis) is made in the anterior capsule of the crystalline lens of the eye, and the front surface of the cataract is opened to allow access to the clouded tissue inside. The cloudy portion is then removed, leaving the thin clear back surface of the lens (called the posterior capsule) in place. A lens implant is then placed in the shell of the natural lens, and the incision is closed. The CCUTTER is designed to improve the predictability and consistency of performing the capsulorhexis during cataract surgery.

A posterior chamber lens implant for use after extracapsular surgery. The lens implant includes a first lens having a predetermined refractive power and a second lens having a second predetermined refractive power. A support structure maintains the first and second lenses in a spaced apart relationship relative to each other. The lens implant achieves both near and far vision.

An adjustable astigmatism-reducing intraocular lens includes a toric optic with a long axis. The optic is rotationally coupled to haptics, and a plurality of struts extend between the optic and the haptics. The struts are held under tension and individually releasable via laser, or are heat shrinkable to increase the tension of selective struts. When a strut is released or shrunk, a torsional force is applied to angularly adjust the optic relative to the haptics. After the lens has been implanted and healed relative to the tissue, struts are individually released via laser ablation to cause torsional instability and resulting net rotational adjustment, or individually heat shrunk to tension the strut, to cause torsional instability, and effect net rotational adjustment to ensure that a long axis of optic is aligned with the axis of astigmatic correction of the eye.

Generally, an intraocular implant having on the external surface a plurality of pattern surface elements disposed in spaced apart relation defining a tortuous pathway adapted to control a flow of fluid, or a flow of particles suspended in a fluid, or inhibits the growth or migration of cells. In particular, an intraocular implant which implanted between an intraocular lens and the surface of the posterior capsule of the eye inhibits growth or migration of residual lens epithelial cells after cataract surgery by providing structural barriers to reduce posterior capsule opacification of the eye.

Phakic refractive lens (PRL) for correcting myopia or hyperopia are disclosed. The lens is implanted in the posterior chamber of the eye, with no permanent point of fixation, such that it floats between the patient's iris and natural lens. The lens corrects refractive errors in the eye, while maintaining the fluid dynamics of the eye and not causing stress or damage to eye structures. The lenses are made from a flexible material (such as those having a hardness of from about 20 to about 50 Shore A), having a specific gravity of from about 0.9 to about 1.2 g / cm<3>, and have a mass per unit area of from about 0.03 to about 0.30 mg / mm<2>. The method for using those lenses and surgical kits including those lenses are also disclosed.

A refractive intraocular lens (104) and method of locating the lens within the eye and attaching the lens to the iris. The refractive intraocular lens (104) may be attached via a staple (230), a fastener (312), anchor (412) or by the tip of the haptic (118). The intraocular lens (104) works in combination with the human crystalline lens to treat conditions selected from the group consisting of myopia, hyperopia and astigmatism.

The invention relates to the field of intraocular lens manufacturing and is particularly suitable for a personalized manufacturing method of an intraocular lens. The manufacturing method comprises the following analysis steps: determining an intraocular lens degree according to acquired eye examination data; designing an intraocular lens three-dimensional shape according to the intraocular lens degree and the eye examination data; carrying out data slicing on the intraocular lens three-dimensional shape; printing data slices by utilizing photocuring 3D printing to obtain an initial product of the intraocular lens; and carrying out aftertreatment on the initial product of the intraocular lens to obtain a finished intraocular lens product. According to the manufacturing method, the intraocular lens degree is determined according to the eye examination data, the intraocular lens three-dimensional shape is correspondingly designed, and then, the intraocular lens is obtained through printing by a photocuring 3D printing technology. Since being acquired by the eye examination data, the intraocular lens has the pertinence, is closer to an own eye refraction state and anterior segment image information, is obvious in personalized use effect and can improve the visual quality and the intraocular lens implanting stability of a patient subjected to an intraocular lens implantation to the maximum.

An accommodating intraocular lens implant for implantation in a human eye, including an optic adapted for coaxial alignment with a vision axis of the human eye, and at least one haptic. The haptic includes an anchor portion for receipt in one of a periphery of a capsular bag of the human eye, a cilairy sulcus of the human eye, and an angle of the anterior chamber of the human eye, and a sinuous portion extending radially from the optic and including a proximal end connected to the optic, a distal end spaced from the optic and connected to the anchor portion, and at least four curves successively connected between the proximal end and the distal end. The sinuous portion is adapted to flex upon ciliary muscle action to move the optic along the vision axis and allow the intraocular lens implant to automatically accommodate.

An intraocular lens implant comprises two viewing elements (12, 13) and a spring element (14) in between. A distance between the first and the second viewing element (12, 13) along an optical axis (A-A′) of the lens implant (11) can be varied for adjusting the focal length of the lens implant (11). The lens implant (11) is designed to take a shape suitable for distant vision when the spring element (14) is in its relaxed state. A spring constant of the spring element (14) is dimensioned such that a force produced by a lens capsule (2) of the eye for holding the lens implant (11) transforms the spring element (14) from its relaxed state into a stretched state. By such design, the lens implant (11) may follow the same actuation principles as the natural lens does.