This link was posted in another 50+ thread on eye safety.

http://www.safetyglassesusa.com/safreadglas.html

They have reasonably priced bifocal safety glasses for sale.

Personally, I use some glasses from Performance with the stick-on insert for the reading portion. I got the inserts at Walgreens in the appropriate strength. I've actually purchased two sets. One set is in the tinted lenses for the Performance glasses and the other set is in the clear lenses. Gives me good vision regardless of lighting conditions.

Al

P.S. Here's a link to the eye safety thread: http://www.bikeforums.net/showthread.php?t=411467