Abstract: Monomeric polysiloxanes endcapped with activated unsaturated groups are copolymerized with cycloalkyl modulus modifiers and tear film stabilizers to form hard, gas permeable, polysiloxane contact lenses and other biomedical devices.

Abstract: A stereo viewing system including a stereomicroscope, a film advance system and a high intensity illumination light table. The stereomicroscope includes rhomboid arms for positioning the optics over the film to be viewed. The light table includes a light transmitting cover, and a pair of intersecting reflectors, a pair of lamp assemblies and a diffuser, all combined to produce a diffused pair of intersecting annular rings of illumination. Each reflector is a section of a surface of revolution, preferably a section of a paraboloid. The lamp assemblies are mounted relative to the reflectors so that the filament of each lamp is, at least nominally, at the focal point of each parabolic reflector. The diffuser is, preferably, a pair of cylindrical shaped elements each of which is located between a lamp and its respective reflector and surrounds each lamp. The light table also includes a pair of mechanical dimmers and a cooling system.

Abstract: A device for facilitating the insertion and removal of a soft contact lens from a human eye, including a suction cup, a tunnel extension on one side of the suction cup, a vacuum source for applying vacuum through the suction cup to the lens and a collapsible member between the cup and the vacuum source. Upon placement of the suction cup over the lens such that the tunnel extension extends over the edge of the lens, the edge of the lens under the tunnel is caused to lift from the eye when vacuum is applied thereto and the suction created draws the entire lens against the suction cup. The collapsible member between the vacuum source and the suction cup collapses causing the suction cup holding the contact lens to move automatically away from the eye.

Abstract: Monomeric polysiloxanes end-capped with activated unsaturated groups are copolymerized with acrylic acid to form hydrophilic, water absorbing polysiloxane contact lenses. These contact lenses are unexpectedly capable upon hydration of retaining from 1 percent to about 99 percent by weight, based upon the total weight of the copolymer, of water.

Abstract: Monomeric polysiloxanes end-capped with activated unsaturated groups polymerized with acrylic acid and a comonomer comprising a polycyclic ester of acrylic acid or methacrylic acid to form a hydrophilic, water absorbing contact lens is disclosed. These polysiloxane polymer contact lenses are unexpectedly capable upon hydration of retaining from 1 percent to about 99 percent by weight of water, based upon the total weight of the dry, i.e., unhydrated polymer.

Abstract: An improved contact lens and method of forming the same which causes the lens to adopt and maintain a particular angular orientation upon the eye of a wearer. One or more characters are formed in relief upon a surface of the lens at a point which is intended as the topmost point in the lens when properly oriented. The relieved characters may be used alone or in combination with previously-known means for effecting orientation of the lens.

Abstract: A sealed container having matter, such as a liquid, paste or powder effectively sealed in the container, has an elongate stopper member transversely disposed in the seal. The seal grips the elongate stopper member but is not sealed thereto. The elongate stopper member has one end extending through the seal and the other end extending outside the container. The outside end of the stopper member may be grasped and pulled. The end extending into the container will be caused to be withdrawn through the container seal, leaving an opening into the container through the space formerly occupied by the elongate stopper member. The matter within the container may then be expelled through the opening.

Abstract: A water absorbing, soft, hydrophilic, flexible, hydrolytically stable, biologically inert contact lens with the capability of transporting oxygen sufficiently to meet the requirements of the human cornea comprising a polysiloxane which is .alpha.,.omega. terminally bonded through divalent hydrocarbon groups to polymerizably activated unsaturated groups and which contain hydrophilic sidechains is disclosed.

Abstract: A hydrolytically stable, biologically inert, transparent, hydrophilic, contact lens comprising a polysiloxane containing hydrophilic sidechains is disclosed.

Abstract: Monomeric polysiloxanes end-capped with activated unsaturated groups polymerized with a comonomer comprising a polycyclic ester of acrylic acid or methacrylic acid to form a soft contact lens is disclosed. These instant polysiloxane copolymer contact lenses have unexpectedly high tear strengths and unexpectedly high modulus of elasticity.

Abstract: An improved objective for a microscope, particularly clinical specular microscopes for the observation of cornea endothelium cells, comprises a housing having first and second tubular lens holders slidably disposed therein. The second tubular lens holder is slidably and telescopically disposed within the first tubular lens holder. The lens holders are spring loaded which allows them to recede under tension into the housing when the object being viewed presses against the exterior of the first lens holder. This helps to protect the subject when viewing the cornea endothelium in vivo. The holders return to their original position upon removal of the object. A focusing mechanism is provided which incrementally moves the second tubular lens holder, thereby focusing the objective lenses contained therein, no matter what the position of the first lens holder is, thereby facilitating examination of the cornea.

Abstract: A device for the insertion and removal of soft contact lenses comprises a bifurcated member having a pair of flexible members extending from the main body and contact lens gripping surfaces attached to the ends of each of the flexible members. The angular tips are constructed and shaped at the precise angle necessary, so that when placed against a contact lens, the lens may be flexed and removed from the eye, or, inversely, easily placed on the eye.

Abstract: A stereo viewing system including a stereomicroscope, a film advance system and a high intensity illumination light table. The stereomicroscope includes rhomboid arms for positioning the optics over the film to be viewed. The light table includes a light transmitting cover, and a pair of intersecting reflectors, a pair of lamp assemblies and a diffuser, all combined to produce a diffused pair of intersecting annular rings of illumination. Each reflector is a section of a surface of revolution, preferably a section of a paraboloid. The lamp assemblies are mounted relative to the reflectors so that the filament of each lamp is, at least nominally, at the focal point of each parabolic reflector. The diffuser is, preferably, a pair of cylindrical shaped elements each of which is located between a lamp and its respective reflector and surrounds each lamp. The light table also includes a pair of mechanical dimmers and a cooling system.

Abstract: A glass coated, flexible, hydrophilic polymeric contact lens having a sufficient amount of oxygen transportability to meet the requirements of the human cornea is disclosed. In addition, this glass coated contact lens is wettable, fillerless, hydrolytically stable, biologically inert, transparent, resilient and soft. The glass coating is substantially colorless, transparent and from about 100 to about 8,000 angstroms thick. The glass may be a silicate glass, a phosphate glass or a germanate glass or mixtures thereof. The contact lens substrate comprises a polymer comprising a poly(organosiloxane) terminally bonded through a divalent hydrocarbon group to a polymerized activated unsaturated group. Further a method of making the glass coated siloxane contact lens is disclosed.

Abstract: Monomeric polyparaffinsiloxanes end-capped with activated unsaturated groups and polymers and copolymers thereof are disclosed herein for use as contact lenses and biomedical devices with improved properties, such as, oxygen transportability, hydrolytic stability, biological inertness, transparency and improved strength without the use of fillers. The polymer composition comprises a poly(organoparaffinsiloxane) monomer .alpha.,.omega. terminally bonded through divalent hydrocarbon groups to polymerized free radical polymerizably activated unsaturated groups.

Abstract: A shaped body is manufactured from at least two polymerized materials with one polymerized material being swellable relative to the other polymerized material. The shaped body is formed having sections of the first material, the second material and a substantially random copolymer of the first and second materials as a transition section between the first and second sections.

Abstract: An artificial intraocular lens system is provided with posterior and anterior tabs adapted to receive and hold a pin substantially perpendicularly therebetween. Said lens system allows for the insertion and affixing of the lens in the eye without the use of sutures and without requiring incisions in the iris to be made by the surgeon. Also disclosed is a tool for insertion of a lens system into the eye.