Third grade was about when I started wearing them, too. I'd been terribly nearsighted all along, but I didn't know I wasn't seeing any worse than anyone else, and no one else figured it out, either, till one day when I asked my grandmother, who took buses all over Columbus, how she always seemed to know which bus to get on.
My appendectomy was also during third grade. In fact, it was shortly after that that I announced I didn't want to be Chuckie any longer, and would everyone please call me Charles. What a year!