Not yet, but it's gonna become necessary before long. I've noticed myself becoming more far-sighted as time goes by, I USED to have 20/10 vision. But I'm 40, so it's to be expected that I'm going to lose my visual acuity.
Losing an eye in 1991 didn't help. A car battery blew up in my face. I still have my eye, but there is no iris (the color part that controls the size of the pupil. This means that eye filters NO light. Not fun.) and no lens (0% focus). Everything in that eye is one very bright blur. I now have to wear sunglasses even on cloudy days.
As it is, I have to hold things a minimum of about 1 foot away to see them, so I'm still good with the DS as I hold it about 1.5 to 2 feet away when playing it. But the time will come when I'll need those reading glasses.
I'll tell ya, it took me 2 years to learn to deal with seeing in 2D. It's 2 years of sanity ripped from my soul, and the 2D torture NEVER ends. I'm a completely different person than I was previous to 1991.
I should write a blog about that someday.