Abstract:
The present invention generally relates to local therapies for the eye and, more particularly, to shaped controlled-release ocular implant devices, including methods for making and using such devices, for delivery of therapeutic agents to the eye. A molded two-layer ocular implant comprises a therapeutic agent for treatment or prevention of a disorder of the eye. The implant comprises a polymer layer and a silicone adhesive layer with a therapeutic agent interspersed therein and joined to the polymer layer. This implant is for placement in the sub-Tenons space of the eye and provides sustained release of the therapeutic agent during the treatment or prevention of the disorder of the eye.
Abstract:
An accommodative intraocular lens (IOL) system is disclosed for insertion into an eye to provide accommodative vision, the system including a deformable air chamber filled with a transparent, low refractive index medium disposed between the first and second optics; and at least one haptic connected to the air chamber and configured to facilitate a change in the curvature of at least one surface of the chamber, such that when the lens system is positioned in an eye, cilliary muscle movements can alter the curvature of the air chamber and vary the overall lens power of the system.
Abstract:
An ophthalmic lens (100) for providing enhanced vision includes a finished optic (105) comprising a base optic (115) and a shell (135). The base optic has an anterior surface (120) and an opposing posterior surface (125), at least one of the surfaces having a first value of a surface quality parameter. The shell includes a membrane (140, 150) including an inner surface and an outer surface, the inner surface covering one or more of the surfaces of the base optic. The outer surface has a second value of the surface quality parameter, wherein the second value is greater than the first value.
Abstract:
Intraocular lenses are manufactured with a higher concentration of blue light blocking chromophores at the center of the lens than at the periphery. Manufacturing involves creating a core by polymerization having a higher concentration of the blue light blocking chromophores, and then polymerizing around the core material a polymer sleeve or tube containing a lesser amount of chromophore. In the second polymerization step some of the chromophore migrates from the higher concentration core to the lesser concentration perimeter material, creating a uniform gradient.
Abstract:
Polymeric materials and methods that realize a gel-type intraocular lens that is formed in situ within the lens capsule of the eye. The polymeric material of the intraocular lens includes reactive end groups that effectively bond with lens capsule walls, thus eliminating space between the intraocular lens and the lens capsule walls and significantly reducing the proliferation of lens epithelial cells which can cause unwanted posterior capsule opacification. In another aspect, various polymers are provided that can be polymerized in the lens capsule with the ability to bond an intraocular lens implant to the posterior capsule of the eye such that there is no space available between the intraocular lens implant and the lens capsule for lens epithelial cells to proliferate and thereby significantly reducing posterior capsule opacification.
Abstract:
The implantable lenses described herein provide for modified edge regions. In one example embodiment an implantable lens includes an anterior surface, a posterior surface and an outer edge surface separating the anterior and posterior surfaces. The anterior surface can include a corrective portion and a beveled portion. The beveled portion can be located between the corrective portion and the outer edge surface. The outer edge surface can have a first portion and a second portion, where the first portion abuts the posterior surface and the second portion, and where the second portion further abuts the beveled portion. The modified edge region provides a more gradual transition between the anterior and posterior surfaces.
Abstract:
The present invention provides optic portions, intraocular lenses, and polymers for use in manufacturing optic portions and intraocular lenses. The optic portions include a polymer that comprises (a) one or more alkoxyalkyl methacrylate monomers and/or one or more alkoxyalkyl acrylate monomers that are incorporated in the polymer; (b) one or more hydroxyalkyl methacrylate monomers and/or one or more hydroxyalkyl acrylate monomers that are incorporated in the polymer; and (c) optionally, one or more crosslinking agents that are incorporated in the polymer.
Abstract:
A method, lens and assembly are disclosed for making a dual optic AIOL from a lens blank having first and second optics and at least one haptic extending therebetween larger in area than the haptic(s) of the finished AIOL. Material is removed from the semi-finished haptic to form the finished haptic of any desired configuration.
Abstract:
A multi-piece intraocular lens (IOL) has an optic constructed of an elastomeric plastic and an opposing pair of attachment members (haptics) constructed of a rigid plastic material. The optic or haptics have one or more small, tear drop-shaped, inlet recesses formed into each from a peripheral edge region. The haptics or optic are formed having peripheral edge protuberances matching in size, shape and position corresponding optic or haptic inlet recesses. The protuberances dovetail into the corresponding inlet recesses and are cemented therein to lock the haptics and optic together. Methods for manufacturing a multi-piece IOL include forming the haptics from a modified haptic blank and the optic from a modified optic blank. After the haptic or optic protuberances are dovetailed and cemented into the optic or haptic inlet recesses, the haptics and optic are milled or lathed from the respective haptic and optic blanks to provide a completed multi-piece IOL.
Abstract:
Atomic level surface smoothing utilizing GCIB (100) to smooth and round the IOL's (10) outer edges to reduce the "edge effect" and its resultant glare. In addition, the present invention provides, atomic level surface smoothing utilizing GCIB (100) to smooth the IOL's (10) posterior and/or anterior surfaces to improve the adhesion of the IOL (10) to the capsule, preventing cell in-growth and their resultant secondary cataract. The GCIB (100) smoothed surfaces will also reduce inflammatory response by reducing foreign particles on the surface and by reducing the microroughness normally inherent on the IOL (10) surface.