Abstract: The present invention is directed to a contact lens design and methods of manufacturing, fitting and using such lenses. As an example, the contact lens may be designed to be used in an orthokeratology treatment program. The contact lens according to the invention overcomes the deficiencies of the prior art, and provides a design which allows proper fitting of a patient, whether for corrective contact lenses or for use in an orthokeratology treatment program. The ability to properly fit a patient will alleviate, at least to a great degree, corneal abrasions from poorly distributed bearing, corneal warpage from decentered lenses, edema from tight fitting lenses and discomfort. The design allows a great deal of flexibility to the fitter to enhance the functionality of the lens. The lens of the present invention includes a central zone and first annular zone located adjacent to and concentrically around the central zone.

Abstract: LED lamps may be effectively cooled with an atmosphere of high thermal conductivity. Hydrogen and helium are transparent gases with high thermal conductivity. Enclosing an LED light source in such a gas environment efficiently conducts heat from the LED thereby enhancing the LED's output and extending the LED's life.

Abstract: Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.

Abstract: The present invention is directed to a contact lens design and methods of manufacturing, fitting and using such lenses. As an example, the contact lens may be designed to be used in a corneal refractive therapy program. The contact lens according to the invention overcomes the deficiencies of the prior art, and provides a design which allows proper fitting of a patient, whether for corrective contact lenses or for use in a corneal refractive therapy program. The ability to properly fit a patient will alleviate, at least to a great degree, corneal abrasions from poorly distributed bearing, corneal warpage from decentered lenses, edema from tight fitting lenses and discomfort from excessive lens edge standoff. The simplified design allows a novice or relatively unskilled fitter to visualize the relationship between the contact lens and cornea of a patient's eye.

Abstract: Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.

Abstract: Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.

Abstract: An electroluminescent vehicle lamp made with a lens plate, a back plate, electroluminescent sheet, first electrical connector, second electrical connector is disclosed. The lamp has decreased volume and weight due to its small thickness. The electroluminescent vehicle lamp provides a vehicle signal lamp with a small thickness that is otherwise conformal with the surface of a vehicle. A particular advantage of the lamp structure is that the vehicle body needs only minimal forming to accommodate the positioning of the lamp, and little interior space in the vehicle is required. Two or more color regions can be formed in one housing. Two different states of appearance such that the device can exhibit a bright operating color (red, yellow, etc.) and yet blend in with the rest of the vehicle exterior in the non-operating mode.

Abstract: A variable rate modulator for selectively encoding a variable rate data stream according to one of a plurality of modulation formats. A timing and control circuit locks the variable rate data to a master clock, an encoder selectively encodes the data according to one of a plurality of modulation formats, and a polyphase filter performs pulse shaping and interpolation functions using only shift and add functions to produce a DAC-ready output signal.

Abstract: Disclosed are methods for extracting leachable materials from a hydratable polymer by incorporation of an adsorbent into the solution employed to effect extraction. Suitable adsorbents are characterized as having a higher affinity for the leachable materials than either the hydratable polymer or the solvent employed in the solution. Also disclosed are sealed packages comprising an aqueous solution, an adsorbent and a hydratable polymer in the form of an ophthalmic device.

Abstract: Disclosed are methods for extracting leachable materials from a hydratable polymer by incorporation of an adsorbent into the solution employed to effect extraction. Suitable adsorbents are characterized as having a higher affinity for the leachable materials than either the hydratable polymer or the solvent employed in the solution. Also disclosed are sealed packages comprising an aqueous solution, an adsorbent and a hydratable polymer in the form of an ophthalmic device.

Abstract: A method has been discovered for the control of arthropod pests which comprises treating the pest with an effective amount of selected fluorocarbons.

Abstract: A method of fitting rigid gas permeable contact lenses comprising the steps of:providing a set of lenses of differing BCOR values, but the same optical corrective power;fitting a patient with a lens to determine an acceptable BCOR value for the patient;determining the corrective prescription for that patient; andsupplying the patient with a lens having an acceptable BCOR value and the correct prescription.The lens supplied is manufactured in the same geometry and fitting characteristics as the lens from the set used in fitting and adjusted to the correct prescription power from the fixed power by diffractive means.

Abstract: Living cells are encapsulated by: (a) dispersing living cells in an aqueous solution of a capsule wall-forming protein; (b) forming aqueous droplets of the cell containing dispersion in an aqueous-immiscible, cell compatible continuous processing medium; and (c) crosslinking the protein with a crosslinking agent which is soluble in the continuous processing medium but substantially insoluble in the aqueous droplets. The resultant capsules containing living cells may be treated with a capsule wall degrading enzyme to enlarge pores of the capsules. The encapsulated cells may be used for administration of cells to an animal for growing the cells in the animal or for delivery to the animal of a substance produced by the cells. By the cells being encapsulated, the cells are not destroyed by the aminal immune system and immune response by the animal may be minimized.

Abstract: A substance for facilitating the detection of estrus applied to the tailhead and rump of a cow as a patch comprises a mass of microencapsulated dye mixed in a suitable paint. The paint dries as a durable layer the color of which will change when substantial pressure is applied for a predetermined time. Should the cow be mounted by another animal for say five seconds or more a large portion of the microcapsules will break and release the dye which colors the patch. The cows with colored patches can then be found by periodic inspection and removed from the herd for insemination.

Abstract: There is disclosed, in one aspect, a long-acting biocidal composition. This composition comprises a chlorine dioxide-liberating compound, such as sodium chlorite, and sufficient organic acid-generating compound, such as poly(lactic acid), to lower the pH of the composition to less than about 7. The organic acid-generating compound is present in a form whereby it is released gradually in the presence of water. Preferably the organic acid-generating compound is encapsulated within or by a film-forming polymer. In another aspect, there is disclosed a method of disinfecting a surface over a prolonged period of time. This method comprises applying to the surface a small but effective amount of the long-acting biocidal composition described above.

Abstract: A cell culture device is disclosed for the cultivation of animal, plant, microbiological or artificial cells. The device involves a three-dimensional arrangement of fibers within a housing arranged to provide maximum exposed fiber surface flow channel diameter while also reducing the tortuosity of the flow path. Cells are bound to the fibers to allow them to contact nutrient fluid solution and thereby to remove any substances originating in said cells, such as viruses and pharmaceuticals.

Abstract: A composition for forming a second composition to treat hair, and method of treating hair, are disclosed. The first composition is based upon guanidine hydroxide in an inert organic topically acceptable liquid medium which is essentially free of water and carbon dioxide. When the composition is ready for use, water is added thereto to form an aqueous composition which is suitable for use in treating hair to cause the hair to assume a desired configuration.