RGP Contact LensesRGP contact lenses are normally categorized under the soft contact lenses category and are also quite common. They offer a fresh look when worn and the only thing that differentiates the rgp lenses from standard lenses is the material used for making these lenses. The materials used are called GP or gas permeable and hence the name RGP or rigid gas permeable. Some of the doctors even call it oxygen permeable lenses. One of the leading manufacturers of RGP contact lenses is coopervision who are dedicated to making the widest variety of softlens designs and wearing options available to everyone. The different brands of coopervision softlens include: 1. Avaira 2. Biofinity 3. Biomedics 4. ClearSight 5. Expressions 6. Frequency 7. Hydrasoft 8. Preference 9. Proclear 10. Vertex One of the popular brand of rgp contact lenses by coopervision is called vertex, which is available in three types: vertex sphere, vertex Toric and vertex Toric XR. The vertex lenses offer some of highest quality of rgp lenses for astigmatism and even for normal wear. You can even wear these disposable contact lenses for wild parties and are available in different colors including red, green, blue and black. Some of the other popular models of rgp lenses include the biomedics EP contact lenses and the proclear Toric contact lenses by coopervision. The biomedics Toric lenses have been developed specifically to treat astigmatism and have a wear cycle of 2-weeks. On the other hand, the proclear Toric rgp lenses can be worn as normal contact lenses and even for astigmatism. When you wear the proclear Toric rgp lenses, you will be able to enjoy a high level of comfort throughout the day. This high level of comfort has been made possible due to the use of PC Technology, which can create a different type of material that contains phosphorylcholine (PC) molecules. This is a substance that is naturally found in human cell membranes. These PC molecules have the ability to attract as well as surround themselves in water. Using this ability of PC molecules, proclear rgp contact lenses are able to keep the lenses moist and hence provide high levels of comfort even after you have worn them for 12 hours. The story goes that the GP or gas permeable contact lenses are quite rigid but at the same time, they should not be confused with the likes of the standard hard contact lenses that existed a decade back and are now almost obsolete or extinct. The old hard contact lenses were mostly made from a material called the PMMA. Before the soft contact lenses arrived around 1971, all the lenses were being made from PMMA. The only and greatest drawback of PMMA is that they are uncomfortable to wear and they don't allow oxygen to pass through them and hence not at all healthy for the eyes. But with the advancement of technology, you can now get the rgp contact lenses or the rigid gas permeable lenses, which are comfortable to wear and extremely healthy for your eyes. |