When considering wearing comfort, look to a lens's ability to transmit oxygen and ability to retain moisture. These two factors, more than any other, will determine how good a lens feels in the eye. As far as moisture is concerned, Air Optix lenses are made of lotrafilcon B, a substance that absorbs water and resists its eventual dehydration while the lens is being worn.
The other factor, oxygen transmission, is equally important. Air Optix for Astigmatism lenses permit up to seven times more oxygen compared to some other contact lens brands, bringing a huge amount of much needed oxygen to your cornea. That ensures not just your cornea's good health, but also contributes greatly to your lenses feeling comfortable.
Wearing comfort is great, but how does it address your blurry vision? Astigmatism is a condition where your cornea is shaped in such a way that it distorts light rays coming into the retina. That's what causes you not to see properly. Air Optix for Astigmatism lenses sit on top of the cornea and act as a refractive filter through which rays of light must pass, which causes them to stop bouncing around and instead focus sharply on the retina where they belong. The result is a return to the crystal clear vision you seek.
These lenses have an unusual physical design for toric eye contacts. While most toric lenses feature a heavier lens weight on the bottom to serve as ballast and keep the lens in place, Air Optix for Astigmatism lenses are different. They employ what CIBA Vision calls a precision balance 8/4 design, meaning that it distributes the thickest part of the lens at the 8 o'clock and 4 o'clock positions. This results in minimal interaction with the lower lid and delivers excellent wearing comfort.
As an added bonus, these lenses feature a plasma surface treatment to produce a super-smooth surface designed to resist the buildup of deposits that tend to accrue throughout the day. These include proteins and lipids from your tears that if left unaddressed can lead to itchiness and discomfort.
Air Optix for Astigmatism lenses are also constructed for ease of use and handling. They feature three scribe marks at the 3, 6 and 9 o'clock positions to guide you when correctly inserting the lens, which is important for treating astigmatism. The lenses are also treated with a slightly blue dye that is invisible when worn but assists you when inserting, manipulating or cleaning the lenses.
Your eye doctor will advise you on the frequency of the replacement schedule for these lenses, which usually vary from weekly to monthly. It is important to follow his or her advice especially with regards to extended wear. While many people can use them for the prescribed 6 nights of continuous wear, some people cannot tolerate wearing lenses for lengthy periods and could do more harm than good. Only your doctor can tell you whether you can wear them in that fashion, or should limit yourself to daily wear.
Whether you seek consistently clear vision, better comfort, or less dryness, Air Optix For Astigmatism toric contact lenses have something for just about anyone. Stop suffering the dryness, itchiness, scratchiness and other symptoms you may be experiencing with other lenses. Instead, check with your doctor and try these lenses out for yourself. You'll love the difference.
David Long is an expert on toric contact lenses. If you have been diagnosed with astigmatism, visit his site at MyToricContactLenses.com to find the lowest prices and best deals on Air Optix For Astigmatism lenses and other toric lens brands.