I always ride with a clear visor, usually wearing my prescription polarised specs, as I cannot see a damned thing in bright light. I can see clearly with these specs in anything up to medium-dense fog (Psychlist, if you're reading this, that last ride-out was in more than medium dense fog!).
The only drawback is that in certain light conditions, cars of certain colour end up with a yellowy sheen about them - as far as my brain and optic nerves are concerned, every other car at distance magickally turns into a police car. Perhaps this isn't a drawback after all...
Actually, these specs of mine remind me of Zaphod Beeblebrox's peril-o-matic shades.
