Compositions for Treating Contact Lenses

James Geler Davies (Inventor), Meakin Brian John (Inventor), John Staniforth (Inventor)

Research output: Patent


Contact lens treating solutions are obtained by dissolving in bulk in purified water a solid, preferably powdered, composition comprising chlorhexidine or a salt thereof, an alkali metal or ammonium salt of a hydroxyalkanic carboxylic acid and a vehicle. The alkali metal or ammonium salt does not hinder the dissolution of chlorhexidine or salt thereof, which usually is hindered when using an inorganic electrolyte salt as the buffering agent. Preferably chlorhexidine gluconate, sodium gluconate and sorbitol are used with the sodium gluconate and sorbitol substantially constituting the composition in a ratio by weight of about 2:1.
Original languageEnglish
Patent numberWO8808309 (A1)
Priority date24/04/87
Filing date22/04/88
Publication statusPublished - 3 Nov 1988


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