Patent ID: 8691287

Claim:
A method of disinfecting a contact lens comprising contacting a contact lens with a solution in a silver-releasing contact lens case, wherein the solution comprises: 0.00016 wt % alexidine: 0.0003 wt % polyquaternium-1; 0.05 wt % ethylenediaminetetraacetic acid; 0.25 wt % sodium chloride; 0.60 wt % boric acid; 0.15 wt % sodium borate decahydrate; 0.65 wt % sodium citrate dihydrate; and 0.10 wt % of a poly(oxyethylene)-poly(oxypropylene) block copolymer and further wherein the method provides synergistic antimicrobial activity against at least one gram-negative bacterium.