If you cannot wear your lenses comfortably for AT LEAST 12 hours, then you are probably not in a lens that is best for you. The problem is, most people are not aware of this and just think that slight discomfort and dryness is the norm with wearing contacts. This is not the case. In the right lens, not only should you be able to wear your lenses for at least 12 hours, but you should have the exact same comfort and visual acuity you had from the moment you first put them on. With Extreme H2O lenses, patients say they can’t feel the lens at all – and at times have to remind themselves at night to take them out.