Abstract: A method of transferring a multi-variate process control model from one RF-powered plasma processing chamber (the reference chamber) to another nominally identical RF-powered plasma processing chamber (the target chamber) comprises first determining a multi-variate process control model on the reference tool based upon sensor data, 100. Then, a set of sensor data is taken for the reference chamber by running a designed experiment, 102, and a corresponding set of sensor data is taken for the target chamber using the same designed experiment, 104. The relationship between the reference and target chambers is determined by comparing the results of the designed experiments and calculating a transform matrix representing differences between the two chambers, 106. Finally, the process control model is transformed from the reference chamber to the target chamber using the transform matrix thus obtained, 108.

Abstract: Photographic emulsions are quickly chilled to a homogeneous, particulate gel by injection of carbon dioxide coolant, while the emulsion is agitated. This process is carried out in a housing having a pair of parallel auger screws to transport emulsion circuitously within the housing. Carbon dioxide coolant is injected through a plurality of nozzles in the housing and is then removed from the housing through a vent line.

Abstract: Improved silicone-containing hydrogels with enhanced wettability comprising at least one silicone-containing prepolymer, and an equimolar amphoteric mixture of acid-containing comonomers and amine-containing comonomers are herein disclosed.

Abstract: A novel class of compounds are disclosed which may be used as novel crosslinking agents for acrylic-containing, vinyl-containing and/or styrene-containing hydrophilic monomers to prepare novel UV-curable hydrophilic copolymers suitable for use as biomedical articles, especially contact lenses.

Abstract: Fumaramide-containing monomers are disclosed which are especially useful in the preparation of biocompatible devices, especially contact lenses.

Abstract: A contact lens package made from one of the mold parts used to mold a contact lens, the lens being packaged in a storage cavity separate from a molding surface of the mold part.

Abstract: A target surface is photoablated by a laser beam by the steps of (a) directing a beam of pulsed UV radiation at a bisecting line on the target surface; (b) scanning the beam in a direction away from the bisecting line to a first edge of the target surface, (c) rotating the target 180 degrees, (d) returning the beam to the bisecting line on the target surface, (e) scanning the beam in a direction away from the bisecting line to the edge opposing the first edge of the target surface; and repeating steps (c), (d) and (e) such that the entire target surface is scanned. This scanning process simultaneously clears away deposited debris and avoids subsequent debris accumulation during the photoablation process.

Abstract: A novel silicone-containing, hydrogel material is disclosed comprising an acrylic-capped polysiloxane prepolymer, polymerized with a bulky polysiloxanylalkyl (meth)acrylate monomer and at least one hydrophilic monomer.

Abstract: Novel fluorosiloxane-containing monomers are disclosed which are especially useful for the preparation of biomedical materials such as contact lenses.

Abstract: Improved methods for modifying target surfaces through ablation which result in a reduction of ablation debris redeposition on the target surface are disclosed.

Abstract: Novel fumarate- and fumaramide-containing monomers are disclosed which are especially useful in the preparation of biocompatible devices, especially contact lenses.

Abstract: Improved methods of modifying target surfaces through ablation are disclosed resulting in a reduction of debris redeposition on the target surface.

Abstract: A novel silicone-containing, hydrogel material is disclosed comprising an acrylic-capped polysiloxane prepolymer, polymerized with a bulky polysiloxanylalkyl (meth)acrylate monomer and at least one hydrophilic monomer.

Abstract: Improved silicone-containing hydrogels are disclosed with enhanced wettability comprising a silicone-containing monomer, hydrophilic monomers, and a relatively non-polar ring-containing monomer able to be converted to a highly polar amino acid upon hydration.

Abstract: Improved methods for modifying target surfaces through ablation which result in a reduction of ablation debris redeposition on the target surface are disclosed.

Abstract: A method for forming a curved edge on a lens comprising the steps of providing an annular laser beam and irradiating a first peripheral region of the lens with the laser beam to remove a layer of lens material from the first peripheral region through ablative photodecomposition. Next, a second peripheral region of the lens is irradiated with the laser beam to remove a layer of lens material from the second peripheral region.

Abstract: Novel fluorosiloxane-containing monomers are disclosed which are especially useful for the preparation of biomedical materials such as contact lenses.

Abstract: A novel class of compounds are disclosed which may be used as novel crosslinking agents for acrylic-containing, vinyl-containing and/or styrene-containing hydrophilic monomers to prepare novel UV-curable hydrophilic copolymers suitable for use as biomedical articles, especially contact lenses.

Abstract: A method for inducing cylinder power into an optical surface which comprises the steps of providing a corneal surface to an apparatus capable of indexing the position of said target to the beam path of a laser capable of photoablating the material of said target, passing said corneal surface through the domain of said laser along at least one axis and controlling the product of the intensity of said laser with time in order to control the amount of ablation of said corneal surface along at least one axis of said corneal surface.

Abstract: An improved method for manufacturing hydrophilic polymeric devices wherein surfactants are added to the hydration bath to assist in the mold release and processing of hydrophilic polymeric devices, especially hydrophilic contact lenses.