(I'm putting this here too just because this is my most viewed book)

Okay, so I'm writing a story and both of my main characters wear glasses. But I don't. Soooo, can anyone tell me what it's like when your glasses get rather cracked, and you just have to deal for a bit? Like, what's visibly like, how DONE do you usually get, how fast, and at what specific things? Also when they get fogged up. What kind of crack are we talking? Like, if someone fell on them and they were in their pocket, only wrapped a few times in cloth. Thanks! >^w^<