Incredibly convenient contact lenses designed for people who lead irregular lifestyle or work night shifts. Also great for people who simply don't have the time or will to take care of regular contact lenses by cleaning and storing them. Continuous wear or extended wear contact lenses are made of special, highly oxygen permeable silicone hydrogel materials, which let your eyes breath even during sleep, when your eyes are closed. You can just wear a pair of your extended wear contacts one day and then leave them in for another week or so (every brand has their own specified maximum use period). There's no need for buying contact lens cleaning solutions or cases as the lenses stay in your eyes for the whole time.
Before keeping contact lenses in your eyes for an extended period of time, contact your eye care professional and make sure this option is safe for you.