Ophthalmic devices, such as contact lenses, may incorporate myopia control optics in combination with therapeutic agents also known to control myopia to create a drug delivery mechanism to inhibit or arrest the progression of myopia in individuals. Any number of contact lenses incorporating myopia control optics may be combined with a therapeutic agent such as atropine, atropine sulphate monohydrate, and/or pirenzepine

FIELD: chemistry.SUBSTANCE: invention relates to pyridoxine derivatives of general formula,where R-is a hydrogen atom or methyl, Ris a hydrogen atom, methyl, linear, branched or cyclic alkyl or Rand Rtogether form a cyclic alkyl capable of powder second-harmonic generation (SHG).EFFECT: invention can be used in laser technology and communication equipment.1 cl, 1 tbl, 7 ex

The present invention relates to an antiprotozoan composition containing caspofungin or its salt and a biguanide compound or its salt.

The instant invention pertains to a method for producing contact lenses with improved oxidative stability of Carotenoids in the contact lens. The method of the invention involves adding a vitamine E material into a contact lens in an amount sufficient to reduce oxidative degradation of Carotenoids in the lens by at least about 30% in comparison with an identical contact lens without the vitamin E material.

PURPOSE: A method for manufacturing an array substrate for a liquid crystal display device is provided to minimize the amount of per acetic acid in an etchant composition and prevent overheating due to chain decomposition reaction by excluding hydrogen peroxide within the etchant composition. CONSTITUTION: After a gate electrode is formed on a substrate, a gate insulating layer is formed on the substrate. After a semiconductor layer is formed on the gate insulating layer, a source/drain electrod...

PROBLEM TO BE SOLVED: To provide BaO-free and PbO-free X-ray opaque glass which is particularly suitable as dental glass and optical glass and has excellent chemical resistance.

The present invention is relative to a heat-curable coating composition forming transparent tintable abrasion-resistant coatings, said compositions comprising, in an aqueous or hydro-organic solvent: (A) a hydrolysate of an epoxy-functional silane compound containing at least two alkoxy groups, (B) colloidal silica having an average particle diameter of 1 to 100 [mu]m, (C) an aluminium chelate compound of formula Al(O-C1-4 alkyl)nY3-n wherein n is 0, 1 or 2 and Y is a ligand selected from the gr...