I'm fortunate that my old eyes work well enough except for close focus. Have been wearing cheap bifocal safety glasses - tinted or clear - for a couple of years when cycling. Cheap enough to get a new pair whenever the surface gets funky. Not interested in spending the big bucks on progressive addition cycling glasses - painful enough to buy a pair of glasses every couple of years for work and everyday stuff.
http://www.safetyglassesusa.com/safreadglas.html