I'm 62. Riding definitely keeps me feeling young, especially when I ride to the gym and back! It annoys me when I can't go as fast as I used to, but I still climb hills, and I don't balk at 60-mile rides. Centuries do give me pause, though! Except for days when the headwind coming off the ocean is strong, it's all still fun, and sometimes it feels like my most natural position in life is perched on a bike saddle.
I'm having kind of an eyewear problem at the moment, which does affect my riding. My contacts have been drying out, even when I wear wraparound sunglasses. So I've been thinking about switching to bifocal sunglasses and researching the various kinds of lenses, such as bifocals vs. progressives. Does anyone have an opinion on that?
This page about bifocals made me think about where the closeup part of the lenses should be: at the bottom I guess, since I'm looking at the distance through the top part. But is it better and more comfortable to have the near vision segment as a small spot lower down or as a "ribbon" that divides the upper and lower distance parts of the lens? If you look at the bifocal diagrams on that page you'll see what I mean.
My optometrist said I should just use distance glasses for riding and change the eyewear when I stop for lunch or whatever. But I hate taking extra glasses with me anywhere and would like one pair to do it all.