Thinking about trying contact lenses? Contact lenses are more versatile than ever before. Start by understanding the pros and cons of common types of contact lenses — and the ground rules for preventing eye infection
When it comes to contact lenses, it's very important to know exactly what's inside of them, or better yet, what they're made of. Materials used have varied throughout the years. Earlier times called for more rigid materials that didn't allow much oxygen to get to your eye. But as technology has improved, so has the availability of products. Based on current information on polymer technology as well as information from the U.S. Food and Drug Administration (FDA), lens polymers were divided into the filcon (hydrophilic) and the focon (hydrophobic) series, depending on their water content, which we will go over in the Silicone and Hydrogel section of this article. Still, we will also discuss what materials are in Soft, RGP and Intraocular lenses.