Abstract: A receptacle for holding dental burrs comprising a container which includes a container body and a cover. The container body provides a compartment having an open end. At least one dental burr holder is provided in the compartment with the dental burr holder having a plurality of bores terminating in an opening. The dental burr holders are pivotally attached to the container body for pivotal movement between a first position in which the opening of the bores face generally outwardly of the open end of the compartment and a second position in which the openings of the bores are closer to a bottom wall of the container body than in the first position. The container has at least one aperture for providing fluid access to the compartment.

Abstract: A cassette for dental instruments includes a tray having bottom and a plurality of walls extending to a particular plane, the walls defining first and second generally opposing slots. A lid having a generally planar configuration is adapted to mount on the tray with its outer surface disposed in the particular plane. A fixed tab on the lid is adapted to register with the first slot, while a moveable tab on the lid is slidable between a retracted position and an extended position wherein the moveable tab registers with the second slot.

Abstract: A catheter comprising an elongated catheter body having a lumen with a distal opening, an elongated inner tube having a flexible distal end portion and a flexible everting element coupled to the catheter body and the inner tube so that the everting element can be inverted and everted to the distal opening. The inner tube has an inner tube lumen which extends through the distal end portion of the inner tube. The distal end portion of the inner tube includes a flexible tubular layer and a flexible reinforcing layer which reinforces the tubular layer and inhibits radial collapse of the inner tube lumen in the distal end portion of the inner tube.

Abstract: A method of making an intraocular lens including providing a fixation member having a proximal end portion with the proximal end portion including an elongated filament, converting a region of said filament at said proximal end portion from a first configuration into an enlargement having a rounded surface and attaching an optic about the proximal end portion of the fixation member to attach the fixation member to the optic.

Abstract: Ophthalmic compositions, such as those used to care for contact lenses, methods of preserving such compositions, and methods for disinfecting contact lenses using such compositions are disclosed. The compositions may comprise an ophthalmically acceptable, liquid aqueous medium and, included therein, an effective preserving or disinfecting amount of an ophthalmically acceptable quaternary ammonium substituted matrix material, the matrix material being selected from the group consisting of proteinaceous materials, carbohydrate materials and mixtures thereof.

Abstract: An improved ophalmic lens is disclosed which has a plurality of alternating power zones with a continuously varying power within each zone, as well as in transition from one zone to another. In other words, a plurality of concentric zones (at least two) are provide in which the variation from far to near vision correction is continuous, i.e., from near correction focal power to far correction focal power, then back to near, and again back to far, or vice versa. This change is continuous (progressive), without any abrupt correction changes, or "edges".Two versions of the invention are disclosed. In the first version continuous, alternating power variation is accomplished by a continuously changing curvature of the lens posterior surface, thereby altering the angle of impact of light rays on the eye.

Abstract: An improved opthalmic lens is disclosed which has a plurality of alternating power zones with a continuously varying power within each zone, as well as in transition from one zone to another. In other words, a plurality of concentric zones (at least two) are provided in which the variation from far to near vision correction is continuous, i.e., from near correction focal power to far correction focal power, then back to near, and again back to far, or vice versa. This change is continuous (progressive), without any abrupt correction changes, or "edges". Two versions of the invention are disclosed. In the first version continuous, alternating power variation is accomplished by a continuously alternating power variation is accomplished by a continuously changing curvature of the lens posterior surface, thereby altering the angle of impact of light rays on the eye.

Abstract: An ultraviolet light absorbing silicone composition comprising silicone base polymer and ultraviolet light absorbing component present as, or derived from, one or more ultraviolet light absorbing compounds having the following structure: ##STR1## and mixtures thereof, wherein X is selected from the group consisting of H, alkoxy radicals and halogen; R.sup.1 is selected from the group consisting of H and alkyl radicals, provided that at least one of X and R.sup.1 is other than H; R.sup.2 is selected from the group consisting of divalent hydrocarbon radicals, divalent substituted hydrocarbon radicals, oxo, divalent oxyhydrocarbon radicals and divalent substituted oxyhydrocarbon radicals; each R.sup.3 is independently selected from the group consisting of alkyl radicals, substituted alkyl radicals, alkoxy radicals, substituted alkoxy radicals, aryl radicals, substituted aryl radicals and fluoro radical; R is selected from R.sup.3, H and CH.dbd.CH.sub.2, and c is an integer in the range of 1 to about 20.

Abstract: An everting catheter system comprising an outer tube having an outer catheter lumen and an opening leading from the outer catheter lumen, an inner catheter movable longitudinally in the outer catheter lumen and having an inner catheter lumen and an everting element coupled to the outer catheter and the inner catheter so that with movement of the inner catheter distally in the outer catheter lumen, the everting element can be everted through the opening. An elongated instrument is movable longitudinally in the inner catheter lumen relative to the inner catheter. Indicia are provided on the inner catheter and the instrument for indicating at least one longitudinal position of the instrument relative to the distal end of the everting element.

Abstract: A reverse osmosis system comprising a reverse osmosis filter having an inlet port connectible to a source of feedwater under pressure via a feedwater inlet conduit, a product water outlet port for filtered product water and brine outlet port for brine. First and second pressure intensifiers are coupled to the feedwater inlet conduit between the source of feedwater and the inlet port of the reverse osmosis filter. Each of the pressure intensifiers includes a pumping member having a pumping stroke and a return stroke. A control valve in the feedwater inlet conduit controls which of the pressure intensifiers receives feedwater under pressure. The control valve is driven by particular fluid pressures in the first and second pressure intensifiers so that feedwater is alternately supplied to the first and second pressure intensifiers.

Abstract: An intraocular lens comprising a deformable optic and a fixation member for use in supporting the optic in the eye. The fixation member includes an annulus surrounding the optic and a plurality of resilient struts interconnecting the optic with the annulus. The struts tend to be compressively loaded by the posterior capsule of the eye after implantation. To prevent buckling of the resilient struts in an axial direction due to the imposed compressive loads, the struts are curved in a circumferential direction when in an unloaded state, thereby being predisposed to further bow in the same circumferential direction upon imposition of the compressive load. This predisposition to bow circumferentially avoids severe problems incurred if the struts are permitted to buckle axially, such as tilting of the optic and impaired vision for the patient.

Abstract: A method for disinfecting a lens is disclosed. The method comprises contacting a lens to be disinfected in a liquid medium with at least one chlorine dioxide precursor in the presence of at least one acidic component effective to increase the rate of formation of chlorine dioxide from the chlorine dioxide precursor, thereby disinfecting the lens; and adjusting the acidity of the liquid medium containing the disinfected lens. Compositions useful in the above-noted method are also disclosed.

Abstract: Disclosed is a method for producing an intraocular lens including an optic and at least one haptic. In one embodiment, the method comprises: exposing the lens bonding region of the haptic to a plasma at conditions effective to enhance the bondability of the lens bonding region to the optic; and bonding the exposed lens bonding region to an optic. The plasma exposed haptic may be coated with a material, e.g., to preserve the enhanced bondability property, prior to bonding the coated lens bonding portion to the optic. Intraocular lenses having enhanced haptic-optic bonding are also disclosed.

Abstract: An intraocular lens comprising a deformable optic and at least one fixation member for use in fixing the optic in the eye. The fixation member includes a deformable element integral with the optic and at least one resilient stiffening element within in the optic and attached to the optic by the deformable element. The stiffening element stiffens the deformable element.

Abstract: Ophthalmic compositions, such as those used to care for contact lenses, methods of preserving such compositions, and methods for disinfecting contact lenses using such compositions are disclosed. The compositions may comprise an ophthalmically acceptable, liquid aqueous medium and, included therein, an effective preserving or disinfecting amount of certain oxygen-containing ionene polymers.

Abstract: Compostions, and method useful for making such compositions and for using such compositions, which are useful to destroy hydrogen peroxide in a liquid aqueous medium, such as that used to disinfect contact lenses, are disclosed. The composition comprises at least one item containing a hydrogen peroxide destroying component, e.g., catalase, effective when released in a liquid aqueous medium to destroy or cause the destruction of hydrogen peroxide present in the liquid aqueous medium, and a barrier coating located on the at least one item and acting to substantially prevent the release of the hydrogen peroxide destroying component for a period of time after the composition is initially contacted with a hydrogen peroxide-containing liquid aqueous medium. The barrier coating comprises a water soluble coating component, e.g.

Abstract: A method of disinfecting a contact lens is disclosed and comprises placing the contact lens to be disinfected into a liquid electrolyte containing chlorine dioxide precursor, e.g., stabilized chlorine dioxide, and forming a disinfecting amount of chlorine dioxide in the liquid electrolyte by passing an electric current through the liquid electrolyte.

Abstract: An intraocular lens comprising at least one fixation member and an optic. The fixation member has an attachment region with a roughened outer surface. The attachment region is received within the optic to attach the fixation member to the optic. The roughened outer surface improves the adhesion of the fixation member to the optic.

Abstract: A method for producing an amino-2-imidazoline derivative comprises contacting an imidazoline sulfonic acid with at least one amine component in the presence of an alcohol-containing liquid medium at conditions effective to form the amino-2-imidazoline derivative.

Abstract: An apparatus for disinfecting lenses includes a single hand-held case with a lens compartment and a power supply compartment. A battery powered unit disposed within the power supply compartment responds to activation of a switch on the case to generate an electric current which is coupled to a pair of electrodes within the lens compartment to electrolyte a solution in the lens compartment and thereby disinfect lenses submerged in the solution. Disinfecting proceeds using a buffered solution to retain solution pH within predefined limits while enabling electrolysis with a large current of shorter duration to decreased disinfecting time. A lip circumscribing an upper opening of the lens compartment is covered with a single hinged cover member that lifts directly away from the lip, and a slidable retainer member is used to retain the cover member in a closed position. Ribs on the cover member retain the lenses submerged in the solution, and a hydrophobic element discharges gases produced by electrolysis.