Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant
Patent
1983-09-28
1985-07-16
Willis, Prince E.
Compositions
Compositions containing a single chemical reactant or plural...
Organic reactant
252173, 25217417, 25217418, 25217423, 252542, 252DIG14, C11D 348, C11D 104
Patent
active
045295352
ABSTRACT:
Preservative systems which may be incorporated into aqueous compositions for the wetting and re-wetting of contact lenses and especially silicone copolymer (gas-permeable) and soft contact lenses are provided. The perservative system includes trimethoprim, a salt of EDTA and sorbic acid or ascorbic acid as adjuvant bactericides. The use of preservatives which are known to cause eye irritation, such as thimerosal, benzalkonium chloride and chlorhexidine is eliminated. Wetting and re-wetting compositions which incorporate the preservative system and include thickening and wetting agents are also provided. The wetting and rewetting solutions can be instilled directly into the eye during contact lens wearing periods and are especially useful for wetting silicone copolymer contact lenses. A method of wetting silicone copolymer lenses is also provided.
REFERENCES:
patent: 3183152 (1965-05-01), Szekely et al.
patent: 3311577 (1967-03-01), Rankin
patent: 3329607 (1967-07-01), Colobert et al.
patent: 3549747 (1970-12-01), Kezanoski et al.
patent: 3954644 (1976-05-01), Krezanoski et al.
patent: 4120949 (1978-10-01), Bapatla et al.
patent: 4199469 (1980-04-01), Walzer
patent: 4367157 (1983-01-01), Sherman
Krezanoski, J. K., "Contact Lens Products", Journal of the American Pharmaceutical Ass'n, vol. NS10, No. 1, Jan. 1970, pp. 13-15.
Sherman Laboratories, Inc.
Willis Prince E.
LandOfFree
Soft contact lens wetting solution containing preservative syste does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Soft contact lens wetting solution containing preservative syste, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft contact lens wetting solution containing preservative syste will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1735021