An inlet andor outlet air hood comprising vertical storm louvers is provided that is particularly well suited for use on a Mobile Offshore Drilling Unit and other marine vessels, although its use is not so limited. The handheld sign provides a warning to oncoming traffic. Such solutions are retained on the surface of an unused lens for extended periods of time, resulting in surface modification that persists in the eye, which may provide significant improvement in the wetting properties of fresh lenses used for the first time and, moreover, even several hours after lens insertion, preventing dryness and improving lubricity.