THERE is, as far as I know, only one accessory that can immediately bestow the veneer of grandeur upon the everyday fellow. That article is the monocle. By placing the gold-rimmed glass into the socket of an eye, class and eccentricity is instantly conferred upon the wearer. Unfortunately the monocle all but vanished in the post-war era, being consigned to a time when gold watch-chains hung across prosperous bellies and diamond tie pins held together cravats. But things are changing. The optician Vision Express has announced it is to re-introduce the single eye-glass following a sudden surge of interest among...