Murine wet & clean contact lens eye drops, when used throughout the day, helps keep your lenses staying clean & clear & your eyes & lenses feeling comfortable. The special formulation removes protein & fat deposits & atmospheric particles that can build up on your lenses during the day causing irritation & fogginess. The gentle refreshing drops also re-wet, lubricate, & moisten your lenses & eyes for enhanced lens wearing comfort. Murine wet & clean has a non-irritating preservative system which turns into substances naturally occurring in the eye, reducing the likelihood of irritation or allergic reaction.