If you’re someone that absolutely hates the hassle of adding and removing your toric contact lenses for astigmatism every day, then how does wearing them for 30 days straight between replacements sound? That’s exactly what is possible with Purevision Toric contact lenses from Bausch and Lomb. These low-maintenance lenses have clearance from the US FDA to be worn for up to a month at a time, making them one of the most care-free brands out there.
You may wonder how such a long amount of wearing time is possible. Bausch and Lomb uses careful engineering techniques to make sure the lenses are safe for use in this manner. They are constructed of a polymer called AerGel, which is designed to allow unusually large amounts of oxygen to pass through the lens and to the eye. Oxygen transfer is essential for having healthy eyes, so only a substance permitting the highest amounts of transfer possible could even be considered for extended wear of such length. Indeed, AerGel allows up to five times as much oxygen through the lenses as compared to other contact lens brands. It’s almost like wearing nothing.
Any lenses you wear for 30 days non-stop are going to have deal with the issue of dirt and debris accumulation. The magic of AerGel is enhanced by a process Bausch and Lomb calls Performa, which injects ionized gas into each lens and greatly increases its moisture retention powers. Since the lens has so much more moisture, it is easily able to repel and wash away debris before it can cause trouble. Additionally, it prevents the build up of lipids and proteins carried by your tears that would otherwise cause irritation and scratchiness. The net result is a silky smooth feeling for as long as you wear the lenses.
OK, so you can wear these lenses a very long time, but what about curing your blurry vision? Astigmatism is a condition where the eye is shaped more like an oval or egg rather than a perfect sphere. This distorts the passage of light rays into the retina, causing them instead to scatter around. When you wear lenses like Purevision Toric, they behave as a prism that sits atop the cornea and compensates for its odd shape, which restores perfect vision by re-focusing light rays on the retina where they belong.
In order for the lenses to serve as a good refracting medium, they must maintain their position on the cornea at all times. Purevision Toric lenses feature specially crafted rounded edges that force the lenses to stay still instead of rotating around. In addition, these unusual edges permit your eye’s natural tears to get behind the lenses, keeping everything wet and clean.
While this all sounds wonderful, it can’t happen without your eye doctor weighing in first. While many people can tolerate extended wear, others cannot because of their unique medical needs. Don’t take a chance on your vision health. Only your vision care provider can tell you for sure whether you can or should wear these lenses for extended periods of time.
While most people will want these lenses for their extended wear properties, many people also choose to wear and remove them on a daily basis with their doctor’s consent. The same properties that make these lenses possible for such lengthy extended wear also makes them outstanding daily wear lenses in their own right for people not interested in wearing them non-stop.
Whether you use Purevision Toric contact lenses for daily wear, for the maximum 30 days of extended wear, or anything in between, you will likely be very satisfied by their outstanding design and construction. The combination of breathability, self-cleaning, and minimum of care makes them a perfect choice for busy lifestyles. Whatever your goals are, try them for yourself and feel the difference.
David Long is an expert who writes about toric contact lenses. If you have been diagnosed with astigmatism, visit his web site at MyToricContactLenses.com to find the lowest prices and best deals on Purevision Toric lenses and other toric lens brands.