I was there last week. I had Dr. Vanaswathan and Dr. Perotti....the whole time i felt like they were playing good cop/bad cop. Dr. Perotti was very nice and accepting of all my answers while Dr. V was very challenging. Just be generally be prepared to answer questions like why optometry, how you investigated profession, strengths/weaknesses, why IU, etc.....but don't sound like you memorized everything. stay natural. good luck!