Contact lens wearers say that they forget which day to change their contacts as instructed. However, according to a new survey of contact lens wearers, Acuminder, a complimentary online reminder tool developed by Vistakon, is helping them change their behavior. Since its launch in 2007, nearly 40,000 contact lens wearers have registered for the service ( www.acuminder.com). It sends an automatic reminder via e-mail and/or cell phone text message reminding them to change contact lenses. It also prompts wearers when to buy new contacts and when to schedule an eye exam.