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.

Clearly, something very special must go into the crafting of lenses with such an incredible wearing schedule. That special thing is AerGel, the substance that makes up each lens. It is a flexible hydrogel with fantastic oxygen permeability, allowing as much as five times as much oxygen to get directly to the eye compared to other lenses. It’s almost like wearing nothing, which gives your eyes the oxygen it needs to stay healthy for as long as you are wearing the lenses.

But don’t the lenses get dirty if they stay in the eye for such a long time? Debris is indeed a challenge, but AerGel addresses that too. Purevision Toric lenses adds a surface method called Performa, which inserts ionized gas into the hydrogel to maximize its moisture-absorbing capability. The higher the amount of moisture, the better the lens can repel dirt and debris before they have a chance to stick to your eye contacts. As an added bonus, this Performa process also discourages the buildup of protein and lipids from your tears on the surface of the lens, which helps to keep the lenses feeling smooth and soft for the entire time 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.

The lenses cannot operate to their full potential in curing astigmatism unless they are held securely in place on the eyeball. Bausch and Lomb employs a manufacturing process that creates specially rounded edges on the lenses, which holds them firmly in place instead of revolving around the eye. Additionally, this shape permits tear fluid to get between the lenses and your eye, which also helps to clear out debris and keep the lenses moist.

Before using these lenses, be sure to ask your vision care provider about them. While it’s true that the lenses are generally approved for such long periods of use, your individual medical needs may preclude you from the same schedule, or may perhaps allow for a lesser period of extended wear. Don’t take your chances. Ask your eye doctor for his or her opinion as to the best wearing and replacement schedule for you.

By the way, you can use these lenses for daily wear and removal if you decide not to use them for extended wear. They feature such a good design for maximum wearing comfort that many people choose them over other brands even if they have no interest in wearing them continuously.

Whether you use Purevision Toric contact lenses for daily wear, for the maximum 30 days of extended wear, or anything in between, you will probably love using them. Maybe it’s the self-cleaning properties that would appeal to you, or the high oxygen availability, or the stability in your eyes, or something else. Whatever it is, if you try them you will discover why these lenses are among the most popular choice of brands available.

David Long is an expert on toric contact lenses. Visit his web site to find money-saving coupons and the best deals on Purevision Toric and other lenses for astigmatism.

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