Two of my children have been using the ortho-k lenses for over a year. My older daughter first tried hard lenses and she just couldn't get used to them. She was comfortable wearing soft lenses, but her vision worsened. The ortho-k lenses have kept her vision stable, she has no trouble wearing them at night and she can swim, play tennis and be active without worrying about her contacts. My younger daughter had never worn contacts of any kind before, but she adjusted to the ortho-k lenses with no problem. I have recommended them to several friends with active kids!