Whatever you do, if you wear bifocals, do not ever think of getting sunglasses without bifocals. Every person I know who did regrets it now. I can't read my bike computer except for the large numbers and I can't read a map, and it's so frustrating.
Luckily I realized that would be a big frustration for me, too. I only started wearing glasses last August, and I went straight to bifocals (hated having glasses around my neck, etc.) I always wore sunglasses when needed before that. I probably went through 4 pairs of clip-ons for my glasses in the last year because I refuse to carry a purse large enough to hold anything bigger than my license and debit card.

So this August at my annual check up, I spent two hours with my (very cute young) optometrist, weighing my options. I ended up with monovision contact lenses. One eye is for near and one eye is for far. The brain kind of knows what to do with that. It's my 4th day wearing the contacts (which I've never worn before) and I seem to be adjusting fine. And, on this morning's ride I wore SUNGLASSES AGAIN! YIPPEE!!

I am going to buy some cycling glasses so I can have clear lenses for cloudy days. So, monovision is an options for bifocal wearers, too.

Karen