Soft contact lens preservative system, prophylactic cleaner and

Details Soft contact lens preservative system, prophylactic cleaner and Soft contact lens preservative system, prophylactic cleaner and

1983-09-28

1985-04-09

Willis, Prince E.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252153, 252173, 25217421, 25217422, 252542, 252545, 252546, 252DIG14, C11D 348, C11D 172

Patent

active

045100659

ABSTRACT:
Preservative systems which may be incorporated into aqueous compositions for the daily cleaning of silicone copolymer (gas-permeable) and soft contact lenses are provided. The preservative system includes trimethoprim, a salt of EDTA and an adjuvant bactericide that is either sorbic acid or ascorbic acid. One suitable cleaning composition which incorporates the preservative system includes three types of detergents. The cleaning composition is effective in removing both proteins and lipids from the surfaces of soft contact lenses and aids in preventing deposits from forming and binding to the lenses.

REFERENCES:
patent: 3329607 (1967-07-01), Colobert
patent: 3908680 (1975-09-01), Krezanoski
patent: 3954644 (1976-05-01), Krezanoski et al.
patent: 4013576 (1977-03-01), Loshaek
patent: 4031209 (1977-06-01), Krezanoski
patent: 4104187 (1978-08-01), Sibley et al.
patent: 4199469 (1980-04-01), Walzer

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