Focus 1-2 Week Visitint Contact Lenses are manufactured by CIBA Vision and are intended to be worn daily and removed nightly. The lenses are discarded after two weeks of use, cutting down the possibility of irritated eyes from deposits built up on your lenses from contact lens cleaning solutions. Focus 1-2 Week Disposable lenses are visibly tinted to facilitate in the handling and application of your contacts. This tint will not change the color of your eyes. Focus 1-2 Week Visitint contact lenses are made of vifilcon A with a water content of 55%.