I interviewed at PCO and SUNY last fall. PCO's faculty interview is much more laid-back than SUNY's -- instead of an open-file panel interview, you have a closed-file one-on-one. The guy I interviewed with just wanted to get to know me and why I wanted to go into optometry. He had a clipboard of objectives (or questions, I don't exactly) that he never made it through because we got carried away with talking about other things. It was very relaxed and comfortable.
Next, we went on a tour of the Eye Institute (you take a bus there) and the school itself, given by two students. Following that we ate lunch at the school's cafeteria with the same students (the voucher they give you has a $-limit, so watch what you order!).
After lunch, we had a financial aid discussion, and finally a one-on-one with an admissions counselor to follow-up on our application files and go over what we thought of our visit.
Good luck! 🙂