Contact lenses constructed of silicone hydrogel are considered to be much more gas permeable than those constructed of plastics. This is important because oxygen is essential for corneal health. Traditional plastic contact lenses relied on the water present in the plastic to transmit oxygen to the cornea. However, silicone is oxygen permeable meaning the cornea receives oxygen through the water as well as the silicone. As a result, these contact lenses can be worn for extended periods of time because the cornea receives so much oxygen.
Now one of the top on-line publishers in the world, LifeTips offers tips to millions of monthly visitors. Our mission mission is to make your life smarter, better, faster and wiser. Expert writers earn dough for what they know. And exclusive sponsors in each niche topic help us make-it-all happen.
Save 70% on contact lenses at Lens.com (http://www.lens.com). Order your prescription contacts from the convenience of your home. Hassle-free ordering and fast delivery. Save time and money online. Trusted site.
Guru Spotlight |
Linda Handiak |