I wear contact lenses for purely cosmetic reasons. If I was going to prison I wouldn't bother with them. It's a pain in the ass having to put them in and take them out anyway. Why go to all that effort when you're just surrounded by other grizzled dudes.

The only thing is they could be targeted in a fight and then you're screwed.

My brother broke my glasses punching me in a fight when I was younger and I couldn't watch TV or read a book or anything cos my eyesight is so shitty.

I invoke my right under the 5th amendment of the United States constitution and decline to answer the question.