Also, we already have a social convention in place for this. You don't look at, speak to, or otherwise acknowledge other people in the bathroom, except so as to give them appropriate space. Everyone in there is taking care of private functions; if everyone follows the convention, we all get a maximally private experience.
Convention already dictates that you shouldn't be rubbernecking at the other urinals; even talking to someone else while at the urinal gets you labeled as "that guy" among the people I know.
If you're talking about prescription lenses, the answer to your question is yes. Glass is designed to be modular, and Glass is intended to accommodate those who wear conventional glasses for vision correction, giving them the option to use glass with their prescription lenses.