In that case, most any of the North American schools would be fine, as well as the well-known private internships like AMC or Angell. You have to me more careful with some of the smaller or newer private internships. Some are great and some are not. And they may not carry as much prestige when applying for residencies.
If youre considering ophtho, make sure they have a full time ophthalmology service with boarded ophthalmologists and the interns spend time there. Youll want to have reference letters from 1-2 ophthalmologists. This information will be available on the match site they start entering programs tomorrow and the deadline is Oct. 1. The same applies for surgery, but most internships have surgeons.
Another consideration is emergency call. All internships have some call but at some places, this is the major focus of the internship. If you like emergency medicine/critical care, those are great. But if thats not an interest for you, that sort of place wont be a good fit. Remember, time spent seeing emergencies is time NOT spent doing other things like ophthalmology for example.
Another factor is amount of oversight. At some places, the hospital is run mostly by house officers. At others, the attending specialists are actually on the floor. So it depends on what you like a lot of oversight or a lot of freedom to learn on your own.
Most everything else is relatively minor, like preference for geographic regions. If you have a 4.1 GPA and reference letters from the president, Bill Gates and Jesus you can pick stuff like that. Otherwise you usually figure you can live anywhere for a year as long as you match.
One final tip if you apply for an ophthalmology residency, make sure you spell it correctly 🙂 eye guys are kinda picky about that.