I have really great eyesight, I don't need glasses. What about you?
You are lucky. I have horrible eyesight! I wear corrective eyeglasses, but I'd like to get contact lenses. 
Oh no, well that's not too bad. Why don't you have contact lenses now?
I used to when I was younger, but they were just so expensive. Most contact lens wearers are females around my age.
I guess that makes sense. I would assume that eye sight tends to deteriorate as you get older.
Yep, wearing contact lenses for long periods of time can actually affect the thickness of your cornea. 
I didn't know that. Does surgery help at all?
I don't think so, unless you get lasik surgery.  It's probably better, because contact lenses can also potentially cause vision loss.