Wow - very informative responses. I had forgotten about the elasticity thing. I'm just wondering if I sjhould think about investing in a pair of bi-focals. Yeesh! 39 years old, folks!
The thing is - I'm nearsighted (myopic) - and unevenly to boot. My left eye is someting like 20/140 and my right maybe 20/100ish. And both are (supposedly) astigmatic.
I have a pair of weaker glasses that I prefer to use when computing and/or reading. Otherwise, like at the grocery store - I'm the guy who's looking over the top of his glasses (voracious label reader), or with specks in one hand and box of whatever in the other, and even every once in a while with one of the temple arms in my mouth as I am comparing ounces to price of one item and cross multiplying in my head to see which is the cheaper ratio!
Yeah yeah, pipe down with your chuckles. I'm a geek - I know this. Rather fitting of the discussion, no? ;)
Hey - woah - wait a sec? Presbyopia isn't farsightedness? That's hyperopia? And presbyopia is "old guy vision" (the loss of elasticity whether myopic or hyperopic?
Cool - I learned something today. Thanks, folks.