On Wed, 27 Oct 2010 19:27:13 +0100, Tim Streater
wrote:


I find it almost impossible sometimes to do some bit of DIY,
because the item in question is above my head and the varifocal closeup
bit is at the *bottom* of the glasses. So I'd have to be upside down to
work on it, rather difficult e.g. under the stairs.

Have a look round for Occupational Lenses or Double-D e.g:-
http://www.allaboutvision.com/over40/work_bifocals.htm


--
Geo