ABSTRACT One hundred soft contact lens wearers were monitored for bacterial flora of tears, contamination of lens storage solutions, and pH of tears and lens storage solutions. All wearers used Flexsol as a lens cleaning and storage solution, and Normol as a lens rinsing solution. It was concluded that contamination of a wearer's storage solution occurred only if the wearer failed to follow instructions in the use of solutions in his daily lens care.
Charles et al. (1973) studied this question.