I went to Iowa last month. They were extremely nice, and the format was informal. No difficult questions. Not much emphasis on research. The drawbacks to me were 1. little to no cataract surgery, 2. homogeneous patient population, 3. small town. Obviously, the faculty are outstanding, and it would still be a great place to train. The current fellow Reid is a great guy, and will answer any questions you ask with total honesty. I hope you enjoy your visit!