Don't worry...everyone has to start somewhere. I suggest checking the phone book for some nearby optometrists and just call the offices and explain that you are interested in a career optometry and would like to learn some more about it. See if the optometrists would be willing to briefly discuss the career with you over lunch or some other free time (perhaps right after the office closes). Then ask if you could perhaps "shadow" them for an afternoon or two. I would suggest trying this with optometrists of various types of practices (e.g., chain store, private solo practice, eye-clinic type practice, etc.). Once you build rapport with one O.D. I'm sure they can hook you up with other colleagues they know. It's nice to get a good feel for the different styles of optometric practices available and the admissions committees will appreciate the time you've put into researching the profession.
I interviewed and was accepted at SUNY optometry so I can tell you a bit about that interview. It is a fairly formal panel interview. Prior to the interview you will be asked to write a short essay on a topic they provide. The essay I was asked to write was in regards to procedures that were not covered by insurance. I would suggest you familiarize yourself a little bit with the concepts of insurance and health maintenace programs and how they work.
The interview itself lasted about 45 minutes. The interviewers (one clinical faculty, one science faculty, a resident, and another I can't remember her position) took turns asking questions about my background, how I came to be interested in optometry, what my strengths and weaknesses were, what my expectations for the career were, why optometry as opposed to other professions, etc. I think the important thing is to relax and be yourself. They are not looking for canned answers but rather your honest opinions. Try and think beforehand your motivations and expectations of optometry.
The interview day ended with a tour of the facility by the dean of admissions. SUNY Optometry is in a great location in Manhattan -- not far from Grand Central Station and directly across from the Main Branch of the NY Public Library and Bryant Park. The building is recently remodeled and there seemed to be lots of space for students. The clinic arguable one of the best in the country as they see a huge variety of patients. There is lots of research going on there and if you are interested in the combined OD/PhD program, there is a lot to pick from. Students seemed friendly and supportive and most were from the NY/NJ/CT area.
Good luck with everthing. I'm sure cpw and the other optometry students (and optometrists) on this forum will offer tons of assistance in your pursuit...