337 results about "Capsular bag" patented technology

An open chamber, accommodative, intraocular lens method and apparatus operable to be positioned within an evacuated capsular bag of a human eye following extracapsular extraction of a natural crystalline lens is provided having an anterior refractive lens optic, a first haptic segment having a first end and being connected at said first end to a peripheral portion of said anterior lens optic and a second end and said haptic segment extending in an elliptical curve, in longitudinal cross-section, along the the line of sight of the lens and at least a second haptic segment having a first end and being connected at said first end to a peripheral portion of said lens optic and a second end and said at least a second haptic segment extending in an elliptical curve, in longitudinal cross-section, and being operably joined with the second end of said first haptic segment to form an open chamber, elliptical shaped haptic accommodating support for the anterior lens within an evacuated capsular bag of a human eye.

An accommodating intraocular lens having anteriorly and posteriorly movable extended portions, such as T-shaped haptics, extending from a central optic to be implanted within a natural capsular bag of a human eye with the extended portions positioned between an anterior capsular rim and a posterior capsule of the bag, whereby during a post-operative healing period, fibrosis occurs about the extended portions to fixate the lens in the bag in a manner such that subsequent natural contraction and relaxation of the ciliary muscle moves the optic to provide vision accommodation of increased accommodation amplitude and diopters of accommodation.

A two optic accommodative lens system. The first lens in the system is fixed in the anterior chamber of an eye. The second lens in the system includes a non-circular ring with radial dimensions that are different in at least two meridians and implanted in the posterior chamber of an eye within the capsular bag. The radial dimension of vertical meridian of the lens approximates the natural diameter of the capsular bag. The optic of the second lens is connected to the ring at the vertical meridian by two or more of haptics. The radial dimension of horizontal meridian of the second lens is slightly larger than the natural diameter of the capsular bag.

An intraocular correction lens has at least one aspheric surface which when its aberrations are expressed as a linear combination of polynomial terms, is capable of, in combination with a lens in the capsular bag of an eye, reducing similar such aberration terms obtained in a wavefront having passed the cornea, thereby obtaining an eye sufficiently free from aberrations.

This invention describes an intraocular lens (IOL) design with a removable optic, which can be inserted in and removed from a haptic device. In this haptic the anterior and posterior capsules are sealed in order to have a perfect control over the lens epithelial cell proliferation which is thereby restricted to the peripheral part of the capsular bag. Additionally, a ring caliper is described as new surgical device to allow a precise sizing and centration of the anterior capsulorhexis. The removable optic allows repeatable correction of the eye focusing over time in case the optical parameters of the eye have changed due to a variety of factors. By separating the optic part from the haptic part, the optic part can easily be manufactured in any shape matching the optical errors of the eye, including the optical aberrations. The optic part can be manufactured out of any biomaterial restoring ocular accommodation. The optic part may include prismatic, astigmatic or magnification correction to improve visual performance. The optic part may consist of or include an electronic device for the purpose of artificial vision. In order to further assist the accommodative capabilities of the implant a capsular accommodation ring of specific biomechanical properties is inserted in the capsular equator.

An open chamber, accommodative, intraocular lens system operable to be positioned within the interior of an evacuated capsular bag of a human eye. The present invention provides new haptic cross-sections, novel complex lens structures by introduction of the concept of a lens ledge, fixation of haptics to lenses at a lens ledge, structural solutions to provide customized fitted correction, and accordion structural solutions to ease the insertion of complex lenses into the capsular bag of the eye.

An intraocular ring assembly and an artificial lens kit, both of which are usable for implantation in a lens capsule or capsular bag of natural eye. The intraocular ring assembly includes a first ring element having recessions therein, a second ring element, and a biasing element provided between the first and second ring elements. The artificial lens kit comprises such intraocular ring assembly and an intraocular lens to be movably supported in the recessions of the ring assembly in a coaxial relation therewith. A guide element may be provided to assist in rectilinear coaxial movement of the first and second ring elements.