The back opening, the bottom opening, and the buried. Now they are all covered and they have become a close pair. All other places said incision + front opening, but here it is buried + rear opening. But personally, I am satisfied. Of course, if I save money, Ill get a revision surgery... (Im not a big eye, but naturally, Im looking for a proper fit) Im thinking about getting my front part done later... Im a little annoyed that my vision has deteriorated, but Im still not dissatisfied.