110 results about "Lens placode" patented technology

Methods for the creation of microspheres treat the clear, intact crystalline lens of the eye with energy pulses, such as from lasers, for the purpose of correcting presbyopia, other refractive errors, and for the retardation and prevention of cataracts. Microsphere formation in non-contiguous patterns or in contiguous volumes works to change the flexure, mass, or shape of the crystalline lens in order to maintain or reestablish the focus of light passing through the ocular lens onto the macular area, and to maintain or reestablish fluid transport within the ocular lens.

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 Accommodating Intraocular Lens (AIOL) is disclosed herein, that is comprised of a flexible optic and a flexible haptic rim that conforms to the human eye capsule. The spherical or custom shape of the optic is engineered to be maintained during accommodation through the mechanical / optic design of the implant and the interaction between the implant and the naturally occurring position and actuating forces applied through ciliary muscle / zonules / and capsule as the brain senses the need to increase the diopter change or magnification when an object of fixation approaches the eye. The axial relocation or position of the AIOL may also be further adjusted anatomically to further improve the affect needed to achieve improved accommodation. Optionally, the accommodating intraocular lens is foldable or injectable for delivery of the lens into the eye.

In accordance with the present invention, a multifocal intraocular lens provides greater or lesser refraction in relation to the position of the head and eyes of a user. A multifocal intraocular lens body for insertion into a fluid-filled enucleated natural lens capsule of an eye is provided wherein the lens body encompasses the optical axis of the eye and provides different greater or lesser refraction depending upon the position of the eye. In a second embodiment, the lens body can be used with an artificial lens capsule implanted within an eye.

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.

This invention effects a change in the accommodation of the human lens affected by presbyopia through the use of various reducing agents that change accommodative abilities of the human lens, and / or by applying energy to affect a change in the accommodative abilities of the human lens. This invention both prevents the onset of presbyopia as well as treats it. By breaking and / or preventing the formation of bonds that adhere lens fibers together causing hardening of the lens, the present invention increases the elasticity and distensibility of the lens and / or lens capsule.

The invention relates to a intraocular lens system having a flexible anterior lens accommodation material behind the lens. The accommodation material may comprise of one or more macromers, which, when polymerized, adjust the properties of the accommodation material. The anterior lens is flexible such that the curvature of the lens changes during accommodation. The anterior lens may be used alone or in combination with a posterior lens.

The present invention relates to a prosthetic capsular bag and method for inserting the same. The prosthetic capsular bag helps to maintain the volume of the natural capsular bag, thereby stabilizing the effective lens position of an IOL so that refractive outcomes may be improved with cataract surgery. The prosthetic capsular bag further provides an integrated refractive surface, providing a means for experimentally determining an effective lens position prior to inserting an IOL.

An accommodative intra-ocular lens deformable between the unaccommodating and accommodating configurations upon the relaxation and contraction of the ciliary muscle. The lens anterior and posterior portions are substantially sealingly joined together about their peripheral edges and define a lens internal volume filled with a substantially incompressible lens internal fluid. Causing a variable internal fluid pressure exerted on the lens inner surfaces. The lens is configured such that radius of curvature of both the central and peripheral sections of the lens anterior portion will decrease upon an increase in internal fluid pressure and increase upon a decrease in internal fluid pressure.

An accommodating intraocular lens for implantation within the capsular bag of a human eye from which the natural lens matrix has been removed. The intraocular lens includes an optic portion for providing vision corrective power and a pair of haptics having relatively flexible portions and relatively inflexible portions reinforced with a mesh-like material such that additional stiffness is imparted to the haptic material without increasing the thickness of the haptic or changing its shape.

A method of creating a capsulotomy and conditioning the crystalline lens is disclosed, wherein a laser is employed that provides improved performance by treating the capsule predominantly prior to treating the lens.

An implantable, compressible, accommodating intra-ocular lens (IOL) coupled to at least one sensor which detects a signal created by the ciliary muscle. A ciliary sulcus ring can house the at least one sensor, and the sensor can include miniaturized electrodes (ciliary muscle probes) for implanting into the ciliary muscle of the subject. A potentiometer / microcomputer can modulate the ciliary muscle signal detected by the sensor(s) into an electrical signal, and a transmitter sends this electrical signal to a micromotor, which causes compression of the IOL via an annular support ring system, causing a change in the IOL shape. The IOL can be part of an IOL complex including a compressible, accommodating IOL, an external lens membrane, and an annular support ring system. The annular support ring system provides a foundation for the micromotor to compress the IOL.

The invention is directed to an assembly comprising a haptic for fixation to, and manufacture in conjunction with, an intraocular lens to be implanted in the natural lens capsule of an eye. The haptic of the invention comprises a continuous ribbon forming an essentially oblong shape having anterior and posterior portions relative to the elliptical center of the haptic, wherein the ribbon loop includes two or more essentially congruent ribbon arches in each portion, and each ribbon arch has a natural index of curvature with an inner and outer edges. designed to expand the eye capsule and put tension on the zonules of the eye. The ribbon affixes to the lens on each side of the optic edge at a point or a series of points that provides suitable centration and stability of the optic, and to suspend the optic in the open capsular space. The material of the haptic is preferably somewhat flexible, and elastic, so as to provide a constant, positive force on the capsule throughout all phases of accommodation, thereby preserving tension of the zonules and allowing the capsule to change shape naturally. The haptic ribbons may be solid or of an open work structure to increase the amount of hydration available to the lens capsule. A secondary haptic ribbon, affixed to a plano optical plate, may be located on the posterior capsular surface and oriented so that the haptic arms extend through the capsular prime meridian to the anterior capsular surface at a 90° angle from the anterior haptic ribbons, thus providing for a capsular configuration as natural as possible, yet associated with an intraocular lens that may be inserted through an incision of less than 3 millimeters.

A dynamic accommodative intraocular lens is provided in which a central lens portion of the intraocular lens undergoes dynamic change in curvature to adjust focus from distant objects to those nearby in response to natural accommodative actions of the patient's eye. The intraocular lens utilizes fluid movement from flexible fluid reservoirs defined along or adjacent haptic elements of the intraocular lens, which are engaged and compressed by the accommodating movements of the ciliary body of the patient's eye to cause expansion and flattening of the intraocular lens to adjust the optic power of the lens.

An intraocular lens (IOL) assembly for correcting myopia, hyperopia and astigmatism is provided. The intraocular lens assembly comprises a lens extending along an optical axis between an anterior optical surface and a posterior optical surface. The IOL has a circumferential edge disposed about the optical axis at a junction of anterior and posterior optical surfaces with N haptics, where N is an integer greater than 1. Each haptic extends from an associated portion of the circumferential edge and along an associated haptic axis and extends between end portions joined to the lens at the circumferential edge. Each of the haptics includes M footplates extending symmetrically about its associated haptic axis, where M may be an integer greater than 0. The resultant vaulted structure provides an intraocular lens assembly that, when implanted in the eye, allows accommodation.

An implantable, compressible, accommodating intra-ocular lens (IOL) coupled to at least one sensor which detects a signal created by the ciliary muscle. A ciliary sulcus ring can house the at least one sensor, and the sensor can include miniaturized electrodes (ciliary muscle probes) for implanting into the ciliary muscle of the subject. A potentiometer / microcomputer can modulate the ciliary muscle signal detected by the sensor(s) into an electrical signal, and a transmitter sends this electrical signal to a micromotor, which causes compression of the IOL via an annular support ring system, causing a change in the IOL shape. The IOL can be part of an IOL complex including a compressible, accommodating IOL, an external lens membrane, and an annular support ring system. The annular support ring system provides a foundation for the micromotor to compress the IOL.

An object is to provide an artificial lens for use in an artificial eye device for cataract surgery practice. The artificial lens includes an artificial nucleus corresponding to a human eye lens nucleus and an artificial cortex corresponding to a human eye lens cortex. The artificial nucleus is formed of an agar gel of agar concentration 1.0 wt % to 5.0 wt %. The artificial cortex is formed of an agar gel of agar concentration 0.5 wt % to 1.5 wt % which is lower than the agar concentration of an agar gel forming the artificial nucleus. In another embodiment, an artificial lens includes an artificial nucleus corresponding to a human eye lens nucleus and an artificial cortex corresponding to a human eye lens cortex. The artificial nucleus is formed of cheese or a cheese-like substance, and the artificial cortex is formed of pulp fiber.

The invention is directed to an assembly comprising a haptic for fixation to, and manufacture in conjunction with, an intraocular lens to be implanted in the natural lens capsule of an eye. The haptic of the invention comprises a continuous ribbon forming an essentially oblong shape having anterior and posterior portions relative to the elliptical center of the haptic, wherein the ribbon loop includes two or more essentially congruent ribbon arches in each portion, and each ribbon arch has a natural index of curvature with an inner and outer edges. designed to expand the eye capsule and put tension on the zonules of the eye. The ribbon affixes to the lens on each side of the optic edge at a point or a series of points that provides suitable centration and stability of the optic, and to suspend the optic in the open capsular space. The material of the haptic is preferably somewhat flexible, and elastic, so as to provide a constant, positive force on the capsule throughout all phases of accommodation, thereby preserving tension of the zonules and allowing the capsule to change shape naturally. The haptic ribbons may be solid or of an open work structure to increase the amount of hydration available to the lens capsule. A secondary haptic ribbon, affixed to a plano optical plate, may be located on the posterior capsular surface and oriented so that the haptic arms extend through the capsular prime meridian to the anterior capsular surface at a 90° angle from the anterior haptic ribbons, thus providing for a capsular configuration as natural as possible, yet associated with an intraocular lens that may be inserted through an incision of less than 3 millimeters.

An Accommodating Intraocular Lens (AIOL) is disclosed herein, that is comprised of a flexible optic and a flexible haptic rim that conforms to the human eye capsule. The spherical or custom shape of the optic is engineered to be maintained during accommodation through the mechanical / optic design of the implant and the interaction between the implant and the naturally occurring position and actuating forces applied through ciliary muscles / zonules / and capsule as the brain senses the need to increase the diopter change or magnification when an object of fixation approaches the eye. The axial relocation or position of the AIOL may also be further adjusted anatomically to further improve the affect needed to achieve improved accommodation. Optionally, the Accommodating Intraocular Lens (AIOL) is foldable or injectable for delivery of the lens into the eye.

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.

Accommodating intraocular lenses and methods of use which account for changes to a capsular bag post-implantation as well as a mismatch is size between the accommodating intraocular lens and capsule are provided.

An intraocular lens system for implantation in the eye to modify the lens system of the eye comprising the cornea and the natural or existing artificial lens in the eye, and a method for using the same. The system and method comprises a lens having a high minus portion, adapted to be implanted in the eye to create a lens system that functions as a teledioptic lens system which, when used without an external lens, provides unmagnified and peripherally unrestricted vision and which, when used with an external lens, provides magnified and peripherally restricted vision to correct for macular degeneration. The lens can be attached to the iris, to a portion of the iris that was removed by iridectomy, or can be implanted in the cornea. The lens can also include a plus portion that is surrounded by the high minus portion. The high minus portion is preferably about one to about three millimeters in diameter, and can have an outer perimeter with no surrounding material or can be surrounded by a plus, minus or toric lens.

Systems, devices, and methods are presented for a prosthetic injectable intraocular lens. The lenses can be made from silicone, fluorosilicone, and phenyl substituted silicone and be semipermeable to air. One or more silicone elastomeric patches located outside the optical path on the anterior side but away from the equator can be accessed by surgical needles in order to fill or adjust optically clear fluid within the lens. The fluid can be adjusted in order to set a base dioptric power of the lens and otherwise adjust a lens after its initial insertion. The elastomeric patches are sized so that they self-seal after a needle is withdrawn. A straight or stepped slit in the patch can allow a blunt needle to more easily access the interior of the lens.

The invention relates to a novel artificial intraocular lens (IOL) and a method for improving such a lens in the field of ophthalmology, with surface shape modifications that differ from perfect spherical geometries. The intraocular lens takes into account the natural optical configuration of the human vision apparatus, for example, visual axis tilt and pupil decentration. In addition, the method accounts for potential positioning errors caused by implantation and surgery effects.

Systems, devices, and methods are presented for a prosthetic injectable intraocular lens. The lenses can be made from silicone, fluorosilicone, and phenyl substituted silicone and be semipermeable to air. One or more silicone elastomeric patches located outside the optical path on the anterior side but away from the equator can be accessed by surgical needles in order to fill or adjust optically clear fluid within the lens. The fluid can be adjusted in order to set a base dioptric power of the lens and otherwise adjust a lens after its initial insertion. The elastomeric patches are sized so that they self-seal after a needle is withdrawn. A straight or stepped slit in the patch can allow a blunt needle to more easily access the interior of the lens.

The present invention relates to a model for surgical operation for an eye with cataract comprising a pig's eye which is prepared by injecting self hardening type chemicals into a crystalline lens capsule or into an empty crystalline lens capsule of said pig's eye, further relates to a model for an enucleating operation of a fallen nucleus lens which is prepared by falling the hardened chemicals into corpus vitreum by breaking posterior capsule of crystalline lens consciously.

An intraocular lens adapted for deployment within a lens capsule. At least part of a lens surface of the intraocular lens constitutes a cell inducing region in which are directly formed a multitude of microgrooves. The microgrooves take a form of minute linear grooves and lands of depth dimension between 0.01 and 1.0 μm and width dimension between 0.1 and 2.0 μm extending with prescribed length in a circumferential direction on the lens surface. The minute linear grooves and lands are formed with a chained pattern connected in the circumferential direction of the lens surface and with a periodic pattern arrayed periodically in a diametrical direction so that the minute linear grooves and lands are formed without intervening spaces throughout the entire cell inducing region and impart visible light transmittance of 60% or above to the cell inducing region.

An intraocular lens (IOL) assembly packaged for shipping, comprising an IOL injector component having a lumen wall, and an intraocular lens, at least one of the lumen wall and the optic comprising a first lens retention feature for impeding progress of the lens through said lumen toward the distal end. An IOL injector for injecting an IOL, comprising at least two projections extending from said lumen wall, the projections being configured and arranged to interfere with said soft tip prior to and during engagement of said soft tip with the IOL. An intraocular lens storage system, comprising a receptacle within the container, and a tapered portion, the tapered portion and the receptacle permitting a user's fingers to extend into the container to grasp a portion of a shuttle in the receptacle and remove the shuttle form the container, the receptacle defining a volume in which liquid is confined, the volume of the receptacle being less than the volume of the container.