If you'd rather spend your time wearing contact lenses instead of cleaning them, CIBA Night and Day contacts may be right for you. They're uniquely made to allow you safe, comfortable wear for weeks at a time. And because they're disposable, you never have to clean CIBA Night and Day lenses.

If you have experience wearing contact lenses overnight, you may wonder if it's really possible to wear contacts continuously for 30 days. But when CIBA did clinical trials, over two-thirds of those tested wore their contacts for at least 22 days and some up to 30 days. And 90% of these same people rated the comfort of the CIBA Night and Day lenses as "very good" to "excellent".

All together, CIBA Night and Day lenses had over 2,000 patient years in testing before they were introduced in the United States. And the positive results from the tests resulted in the Food and Drug Adminstration approving the lenses for continuous wear up to 30 days.

Because CIBA Night and Day contact lenses can be safely worn longer than other lenses, they're obviously made differently. And that difference shows up in two ways. The first is the lens material that allows up to six times more oxygen to pass through to your cornea compared to other disposable lenses. And getting an adequate supply of oxygen to your cornea is absolutely critical to keep your eyes healthy when wearing contacts for long periods.

The other improvement that CIBA Night and Day lenses have is a biocompatible surface coating. The coating mimics a human cell and so your body doesn't react to the lens as it does with other foreign objects. And this cuts down on the accumulations of debris and bacteria in tears. Which also means less irritation to your eyes and more moisture retention.