Abstract: A borosilicate glass composition consisting essentially of the following components:______________________________________ SiO.sub.2 57-77 mol %, Al.sub.2 O.sub.3 0-8.5 mol %, B.sub.2 O.sub.3 4.6-23.0 mol %, ______________________________________the total amount of SiO.sub.2 +Al.sub.2 O.sub.3 +B.sub.2 O.sub.3 being from 81 to 91 mol %, ______________________________________ Li.sub.2 O 0-1.5 mol %, Na.sub.2 O 2-7.5 mol %, K.sub.2 O 2-7.5 mol %, ______________________________________the total amount of Li.sub.2 O+Na.sub.2 O+K.sub.2 O being from 7.6 to 10.6 mol %, ______________________________________ CeO.sub.2 0.7-2.0 mol %, Sb.sub.2 O.sub.3 0-0.3 mol %, As.sub.2 O.sub.3 0-0.3 mol %, TiO.sub.2 0-2.0 mol %, F.sub.2 0-2.0 mol %, ______________________________________and one or more of MgO, CaO, SrO, BaO, ZnO and PbO, in a total amount of from 0 to 7 mol %; the glass composition having a coefficient of linear expansion within the range 64.0-70.0.times.10.sup.-7 /deg.C.

Abstract: Methods and compositions for preventing or treating ophthalmic diseases or disorders wherein an ophthalmically effective amount of the C.sub.20 through C.sub.26 aminosteroids of formula XI and their pharmaceutical, acceptable salts, hydrates or solvates is administered in an inert vehicle to arrest oxidation processes damaging to the eye.

Abstract: This invention relates to a mechanism or hinge for use in a structural glass assembly. In particular the mechanism is attachable to a glass unit, e.g. a double glazing unit, to enable it to open or close. The mechanism has essentially two parts, a stationary part and a movable part. The stationary part which is attachable to the glass structure incorporates two blade-like plates between which the movable part is slideably located. The stationary part has two arcuate tracks (open and closed) over which a pair of roller bearings are guided during operation of the mechanism whereas the movable part which is attachable to e.g. a double glazed unit, has a single arcuate track over which a single roller bearing is guided during operation of the mechanism. The mechanism has a virtual pivot point on the glazing unit to which the mechanism is attachable. One embodiment of the invention includes a centring arrangement FIG.

Abstract: Lightly crosslinked polymers, preferably ones prepared by suspension or emulsion polymerizing at least about 90% by weight of a carboxyl-containing monoethylenically unsaturated monomer such as acrylic acid with from about 0.1% to about 5% by weight of a polyfunctional, and preferably difunctional, crosslinking agent such as divinyl glycol (3,4-dihydroxy-1,5-hexadiene), having a particle size of not more than about 50 .mu.m in equivalent spherical diameter, when formulated with an ophthalmic medicament, e.g., fluorometholone, into suspensions in aqueous medium in which the amount of polymer ranges from about 0.1% to about 6.5% by weight, based on the total weight of the aqueous suspension, the pH is from about 3.0 to about 6.

Abstract: A topical, aqueous ophthalmic gel suspension for dry eye is administrable to the eye in drop form, remains as a gel in the eye for a prolonged time, and releases water and one or more ophthalmic demulcents or vasoconstrictors. It comprises water and from 0.1% to 6.5% by weight of lightly cross-linked carboxyl-containing polymer having a particle size of not more than about 50 .mu.m in equivalent spherical diameter. The suspension is at a pH of from 6.6 to 8.0, has an osmolality of from 50 to 400 mOsM, and a viscosity of from about 500 to about 4,000 centipoise (0.5 to 4 Pa.s).