Hey! I had my OSU interview in October and it was pretty laid back. The questions that they asked were pretty straightforward. I advise that you watch the videos that they sent you (especially the one on interview tips) because they are sooo helpful. I was interviewed by 4 members of the admissions committee.
Here's a breakdown of how my interview day went:
1. You meet with an admissions counselor and they give you a breakdown of the day's activities (they give you a folder containing info about OSU, business cards, financial aid info, etc.)
2. You tour the College of Optometry and the OSU campus
3. Lunch with current students
4. Interview (mine lasted about 40 minutes)
5. The admission counselor will explain financial aide and how to qualify for in state tuition after your first year (if you're from out of state)
My day ended after that. I was there for about 4-5 hours (?). I received a phone call 4 days later informing me that I've been accepted!
Good luck with your interview and let me know if you need any more advice! Remember to just be yourself 🙂