Abstract: Optical lens bodies and haptics therefore are prepared from polymeric materials wherein all surfaces of the materials are substantially biologically inert to occular tissue, all surfaces are substantially free of surface defects when viewed through a 10 power optical microscope, the materials have a contact angle with water of at least 85.degree., a contact angle with glycerol of least 75.degree. and a surface energy less than 30 erg/cm.sup.2.
Abstract: An optical lens of an acrylic polymer having an outermost surface modified in morphology to possess desired characteristics of low surface energy and high biological inertness. The modified surface is achieved by removing only molecular level irregularities in the outermost surface of an acrylic polymer optical lens body. The surface removal and smoothing process involves the steps of surface preparation and surface passivation. In surface preparation, the surface of the lens body is treated to render it wettable by a surface passivation reagent. In surface passivation, the surface prepared optical lens body is immersed in a surface passivation reagent which removes weakly bound water molecules from the outermost surface of the lens body and reorganizes or smoothes at the molecular level irregularities at the surface of the optical lens body.
Abstract: The present invention is directed to an intraocular lens (IOL) holder or case for holding, storing and transporting various types of intraocular lenses. The IOL holder or case is comprised of (a) a base having a recessed portion which contains a concave portion sized to hold and support an IOL of various sizes; (b) a cover for the base which has disposed therein a flexible insert; and (c) a system for locking the cover and the base in secure relationship to one another.
Abstract: The novel compound of the formula ##STR1## has been found to be useful as a UV absorber. A novel PMMA material has incorporated therein a UV absorbing amount of the novel UV absorber. Intraocular lenses and contact lenses are produced from PMMA having incorporated therein a UV absorbing amount of the novel UV absorber.Eyeglasses are produced having lenses of a polycarbonate material which has incorporated therein a UV absorbing amount of the novel UV absorbed.
Abstract: A device is described for folding an IOL and thereafter holding it in its folding state, which comprises a member foldable into two sections of substantially equally dimensions, each of said sections having a shoulder portion dimensioned to receive an edge of the optic of an unfolded IOL and to hold the IOL in the plane of the member when the member is in an unfolded state. A method of folding a foldable IOL along the diameter thereof comprises placing said IOL in the device of claim 1 so that the edges of the optic rest on the shoulders and the optic is substantially centered along the fold line of said member, and folding said sections together.A case is also described for the device which is capable of holding the device with an IOL in an unfolded state.
Abstract: A multifocal intraocular lens is produced which comprises a lens body having a plurality of optical zones which comprises an aspheric optical zone between each add and base power zone thereby providing a gradual transition in the curvature of the optic surface and avoiding abrupt changes in the curvature of the optic.
Abstract: A contact lens material which is lipophobic, easily machined and is oxygen permeable which comprises a copolymer comprising from 25% to 50% by weight of a polysiloxanylalkyl ester of acrylic or methacrylic acid, from 40% to 69% by weight of a fluorinated styrene, from 4% to 7% of a hydrophilic monomer, from 2% to 5% of a suitable cross-linking agent and from 0% to 2% of a UV absorber.
Abstract: A multifocal lens useful as a contact lens or implantable as an intraocular lens which comprises at least 3 zones, the first zone comprising a polymer of a specified refractive index, the second zone comprising a polymer having the same repeating units as the polymer comprising the first zone and having a specified refractive index differing from the refractive index of the polymer comprising the first zone by not more than 0.1 units and by not less than 0.01 units and the third zone between the first and second zones comprising a polymer having the same repeating units as the polymers comprising the first and second zones and having a refractive index continuously variable between that of the polymer comprising the first zone and that of the polymer comprising the second zone, the at least three zones being transparent and having no discontinuities visible to the human eye between the zones.
Abstract: A deformable-elastic intraocular lens comprising a deformable-elastic lens body of crosslinked acrylic material formed of copolymers of methacrylate and acrylate esters which are relatively hard and relatively soft at body temperature, crosslinked with a diacrylate ester to produce an acrylic copolymer having a substantially tack-free surface, a crosslink density of between 0.5.times.10.sup.-2 and 1.5 .times.10.sup.-2 moles per liter, and glass transition temperature in the range of -30.degree. C. to 25.degree. C., a tensile modulus between 1000 and 3000 psi and a elongation a break of 100% or greater.
Abstract: A method of forming single-piece intraocular lenses comprising the steps of forming a thin sheet of colored polymethyl methacrylate, coring the sheet to form holes therein, filling the holes with a clear or differently colored PMMA material, polymerizing the colored and clear or differently colored PMMA material comprising the sheet and filled holes, cutting core members from the polymerized sheet each having an inner circular region of PMMA material and an outer region of colored PMMA material and machining a single-piece intraocular lens from a core member to have a central lens body of PMMA material and colored PMMA positioning loops extending from and integral with the central lens body.