Opti-free puremoist rewetting drops provide a refreshing burst of moisture to your contact lenses and reduce lens discomfort anytime you need it. If your contact lenses unexpectedly get dry or scratchy, opti-free puremoist rewetting drops can help moisten your lenses throughout the day, and are designed to work with opti-free puremoist contact lens solution for outstanding contact lens moisture and comfort, which helps prevent deposit build-up. Removes particles that cause lens irritation Helps prevent deposit build-up that may cause blurring of vision Can be used on silicone hydrogel and all types of soft contact lenses while on the eyes