Bausch & Lomb starts today in the US a multi-channel advertising campaign to promote its soft contact lenses Pure Vision. A TV spot will run on US network and cable stations and will also be available online. Along with the TV campaign, Bausch & Lomb is hosting an online sweepstakes where participants can vote for "America's Greatest Sight" and register for a chance to win a grand prize trip to the winning location, either New York City, Washington, D.C., San Francisco or Las Vegas. Visitors to the www.purevision.com web site can also print a certificate that they can take to their eye care professional and exchange for a free pair trial of PureVision contact lenses.