Washington: Contact lenses laced withVitamin E that can hold eye-drops for almost 100 times longer,have been developed by American scientists.
Describing the new lenses, Chauhan said: The vitamin Emolecules in the lenses form `nano-bricks` like invisibleclusters that act as a `transport barriers` and "slow down theelusion of medication from the lens into the eye." The drug released from the lens into the eye stays in thetears far longer than the 2-5 minutes with eye drops, leadingto more effective therapy, Chauhan said. The team in laboratory tests on animals observed that thelenses containing vitamin E nanobricks administered drugs upto 100 times longer than most commercial lenses.
Chauhan said, "Vitamin E is a proven nutraceutical thatin small amounts is good for the eye because of itsanti-oxidant properties. Its presence in the lenses blocks UVradiation leading to increased protection against UV light." "Our research has shown that the vitamin can be loadedinto the lenses without any reduction in transparency. Webelieve it could be helpful in disease treatment and inprevention as well," he said. The lenses, clinical trials for which would begin in next2 years, could be designed for continuous wear for up to amonth, he added.