Nova has 5 clinics, with one built last year called "distressed kids", focusing on pediatric optometry. I am not sure how many of the 5 clinics are onsite at the university, but at least one of them is.
Compared to ICO, the clinic (the one that I toured, which is on campus) was a lot smaller, older, and did not have the same amount of patient flow.
I would assume you would get quite a lot of patient diversity at Nova tho, I remember someone saying at the interview that people from the surrounding islands come to their clinics for eye care (potential sources of pathological cases?).
As for externship sites, ICO has a much larger variety (130 sites in the US, Canada, Australia ...etc). Nova has less of a choice for externship sites, mainly in Florida and I think another one in Shanghai, China.