To ensure that your contacts remain healthy, you should always replace them as required by the manufacturer or type of contacts you are using. Most types of contacts need to be replaced every 2 weeks, and replaced with a fresh pair. If you are using daily disposable lenses, you should always throw them away before you go to sleep, then wake up to a fresh new pair in the morning. If you don t clean your contacts on a regular basis, you may end up getting an eye infection. Contact lenses are a great investment for anyone who needs vision correction, although you ll need to take care of them. Whether you wear soft or hard contacts, you ll need to clean them on a regular basis and examine them for defects, dirt, or tears. Keep in mind, you also need to visit your eye doctor on your regular appointments, as your eye examinations are still very important - even though your contact lenses may not affect you or bother you at all. Even though most extended wear contact lenses aren t high in price, you should still look for the best deals. You can have a lot of fun with colored lenses - especially when you show them off to friends and family - who don t know you have them. All around the world, thousands and thousands of people wear colored lenses. Contact lenses themselves all the best alternative to glasses, with colors being the next best thing. How To Clean Hard Contacts Hard, or rigid contacts are comprised of material that is known as PMMA (polymethylmethacrylate). This material is very rigid, and doesn t contain near as much water as soft contacts. With that in mind, taking care of and cleaning hard lenses is very different that cleaning and maintaining soft contact lenses. Up until recently, those who wore bifocals had very limited options when they chose their corrective lenses. Years ago, glasses that contained bifocal lenses were just about the only option available. Over the years, no-line lenses were created, and glasses became a bit more attractive. This was a very definitive time for bifocal correction lenses, as they looked a lot better than they ever did in the past - eliminating the bulky and unattractive appearance they were well known for.