MULTI PURPOSE CONTACT LENS CARE COMPOSITIONS INCLUDING PROPYLENE GLYCOL OR GLYCERIN
Multi-purpose solutions for contact lens care provide substantial lens wearer/user comfort and/or acceptability. Such solutions include an aqueous liquid medium; an antimicrobial component, preferably a biguanide polymer present in an amount of 0,00001 % (w/v) to 2 % (w/v); propylene glycol or glycerin in an amount sufficient to increase antimicrobial activity; a surfactant component, preferably a poly (oxyethylene) -poly (oxypropylene) block copolymer surfactant, in an effective amount; a phosphate buffer component in an effective amount; preferably (2x) a viscosity inducing component, preferably selected from cellulosic derivatives, in an effective amount; and preferably (2x) a tonicity component in an effective amount. Such solutions have substantial performance, comfort and acceptability benefits, which, ultimately, lead to ocular health advantages and avoidance of problems caused by contact lens wear.