My new ophthamologist, Mr R. de Cock, has recommended these little beauties. Wire framed, too, so they're not so prone to spontaneous combustion as the plastic Ben Sherman Margates.
Casting the old glass eye around the doc's reception as I was waiting to see the great man, I spied a filing cabinet labelled 'R. de Cock Letters'. Now I know where all those spam emails promising me a 'lighthouse in an open sea' are coming from!