Acuvue Oasys is a contact lens which uses Hydraclear Plus technology to deliver all day comfort to even the driest eyes. Hydraclear Plus generates a unique wetting agent which maintains the comfort of the contact lens. Acuvue Oasys is also a high UV blocking contact lens which is ideal for wearers who spend a lot of time outdoors. Acuvue Oasys should be removed & cleaned before going to sleep & it is recommended that they are replaced with a fresh pair every two weeks.