33 results about "Ciliary sulcus" patented technology

Unitary accommodating intraocular lenses (AIOLs) including a haptics system for self-anchoring in a human eye's ciliary sulcus and a resiliently elastically compressible shape memory optical element having a continuously variable Diopter strength between a first Diopter strength in a non-compressed state and a second Diopter strength different than its first Diopter strength in a compressed state. The unitary AIOLS include an optical element with an exposed trailing surface and are intended to be used with a discrete base member for applying an axial compression force against the exposed trailing surface from a posterior direction. Some unitary AIOLs are intended to be used with either a purpose designed base member or a previously implanted standard in-the-bag IOL. Other unitary AIOLs are intended to be solely used with a purpose designed base member.

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.

The present invention pertains to accommodating intraocular lens (AIOL) assemblies including a haptics system for self-anchoring implantation in a human eye's annular ciliary sulcus for retaining an AIOL at a desired position along the human eye's visual axis, and an accommodation measurement implant (AMI) for determining accommodation and accommodation forces in an experimental set-up including an animal's eye.

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.

A method of positioning an accommodating intraocular lens assembly in an eye can include implanting an accommodating intraocular lens assembly having a positive power lens in the eye. The accommodating intraocular lens assembly can also include a plurality of stanchions extending between base ends and distal ends. The base ends can be disposed in spaced relation to one another about a first arcuate periphery positioned in a ciliary sulcus of the eye. The distal ends can be disposed about a second arcuate periphery extending in a second plane positioned forward and outside of a capsular bag of the eye. The positive-power lens can be connected with the plurality of distal ends whereby a center of the positive power lens is moved along the central optic axis in response to contraction of the first arcuate periphery by contraction of the ciliary sulcus.

Provided is an intraocular lens including a lens and a pair of right and left loop-shaped support portions, and a folding-back portion is provided in the front end of each support portion. A sclera tunnel is formed in the circumferential direction at a position of a depth corresponding to the half of the thickness of the sclera in two symmetrical positions with respect to the visual axis in a portion adjacent to a limbus of the sclera. The front end of the support portion is extracted from the ciliary sulcus and is inserted into the sclera tunnel, so that the intraocular lens is fixed into the eye. Furthermore, at that time, the folding-back portion is hooked to a certain portion inside the sclera tunnel, so that the support portion is strongly restrained inside the sclera tunnel. As a result, the intraocular lens is more reliably fixed.

An intraocular lens has central lens body with a first and second, opposite posterior and anterior surfaces, the posterior and anterior surfaces meeting in a rounded peripheral side surface. The lens further has at least a pair of haptics extending from the peripheral side surface of the central lens body, each of the haptics having an arcuate configuration so that a radially distal end of each haptic is engageable within the ciliary sulcus of the eye. The haptics engageable with the ciliary sulcus for stabilizing the central lens body at a location posterior, or rearward, of both the lens capsule anterior and posterior portions, such that the central lens body seals the anterior and posterior portions together proximal to a capsulotomy in each of the anterior and posterior portions.

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 discloses an ultra-thin zero-spherical-aberration implantable myopia lens. The lens is made of transparent hydrophilic polymethacrylate material, and includes an optical zone of the lens and plate-shaped supporting haptics along the edge of the optical zone of the lens. , used for surgical implantation to correct the vision of myopia. The implantation position is located behind the iris and before the natural lens (ciliary sulcus). The optical zone of the lens of the present invention is composed of a plano-concave optical surface, has an ultra-thin axial thickness, and increases The gap between the lens and the natural lens is reduced, the risk of post-cataract is reduced, and at the same time, it is convenient for surgical implantation or removal; the optical zone of the lens of the present invention has zero spherical aberration distribution, and does not cause total spherical aberration of the human eye after implantation Changes, correcting vision while increasing the natural comfort of the patient's eyes after surgery.

An intraocular lens for implantation in the ciliary sulcus of the eye, the intraocular lens has an optic (1) on the periphery of which at least two haptic posts (2) in the form of closed loops are arranged, The haptic posts (2) are arranged symmetrically on each side of the optic. Each annulus (2) consists of at least three segments interconnected by inflection points (5, 6), i.e. an arcuate upper segment (2c) forming the part for contacting the ciliary sulcus of the eye, and a The connection between the upper segment (2c) of the optical part (1) and the two lower segments (2a, 2b) of the optical part (1), the two lower segments (2a, 2b) are also connected to the Optics (1). The length of the upper segment (2c) is smaller than the sum of the length of the lower segment (2a, 2b) and the length of the gap (D) in the region where the lower segment (2a, 2b) is connected to the optic. The spacing (D) is such that the lower segments (2a, 2b) converge towards each other in the direction of the optic (1).

A method of positioning an accommodating intraocular lens assembly in an eye can include implanting an accommodating intraocular lens assembly having a positive power lens in the eye. The accommodating intraocular lens assembly can also include a plurality of stanchions extending between base ends and distal ends. The base ends can be disposed in spaced relation to one another about a first arcuate periphery positioned in a ciliary sulcus of the eye. The distal ends can be disposed about a second arcuate periphery extending in a second plane positioned forward and outside of a capsular bag of the eye. The positive-power lens can be connected with the plurality of distal ends whereby a center of the positive power lens is moved along the central optic axis in response to contraction of the first arcuate periphery by contraction of the ciliary sulcus.

A two-stage foldable intraocular lens IOL (2) is provided which is surgically implanted in a patient's pseudophakic eye in addition to at least one primary IOL (1) already implanted. The secondary IOL (2) is placed optically coaxially with the primary IOL (1), focusing the combined image onto the retina (5) of the patient's eye (4), which additionally magnifies the macula projecting onto the retina (5) (6) At least the middle portion of the image on one phase IOL. A secondary IOL (2) includes one or more haptics (7) for anchoring and stabilizing it within the ciliary sulcus (8) of the patient's eye (4), and an optically active portion (9) designed to The image is projected through a primary IOL (1) onto the retina (5). The optically active portion (9) of a secondary IOL (2) consists of a central optic (10) and a peripheral optic (11) extending around the central optic (10) forming two distinct but coaxial Positioning the lens. The central optic (10) is designed to form a positive lens that provides a minimum of 5D, up to a maximum of 25D of additional refraction to the refraction provided by the peripheral optic (11) of the secondary IOL (2).