In reply to Mathias:
I have a nice pair of wrap-around glasses which I use for driving and wlking in built up areas in the sun (the bright light hurts my delicate blue eyes).
Somewhat nervously, I took them on my recent trip to Bolivia, but they protected my eyes fine.
I even got some impressed comments from trendy teenagers. They asked what make they were (no obvious logo). When I said they were Boots own brand, they changed the subject...
But they have done me fine.
By the way, I like the wraparounds because of the peripheral vision while driving.