Is this a middle vault collapse? What is the treatment? I year post-op. (photos)

Revision rhinoplasty for nasal dorsum depression and lateral mid collapse , etc. is corrected by adding cartilage and soft tissue grafts to fill in these. The hump may or may not need reducing but I need to see if this is too high as well. See a very experienced revision rhinoplasty surgeon to correct this.

From the limited photographs, it appears that there's a depression in the cartilaginous dorsum, and a bony hump present. The hump makes the depression look worse and vice a versa. Consider shaving down the dorsal hump and potentially adding a small graft In the depressed area of the nose to balance out the bridge line. Revision rhinoplasty is more difficult than a primary rhinoplasty, so make sure your surgeon has lots of experience.

Click on the "Web reference" link, just below my response, or go here:
FacialSurgery.com/RealSelf/RealSelf_kari2610.html
I made a computer morph of your nose, and an animation of the morph, to show the changes that are possible for your nose in truly expert hands.You've been asking about a middle vault collapse for a while. There might be a tiny amount of that, but it's only a small part of what's going on. When that right three-quarters view that you posted looks like a big bump where the bone is, and a bump where the tip is, and a depression in between those bumps, then yes, that depression might be a tiny "collapse," but really, we see the depression there because the boney part of the nose is too prominent, making the bump above the dent, and the tip is too prominent, making the bump below the dent. If the bone and the tip were less prominent, we probably wouldn't see the dent at all!In the morph, I simulated narrowing the boney part of the nose, and narrowing *and elevating* the tip. I'd like to see your tip up a bunch.
You should understand that the changes I demonstrated in the morph require advanced techniques, techniques that most plastic surgeons cannot handle.  Be sure to read the section in the "Web reference" link on how to stay out of trouble while searching for a rhinoplasty surgeon, and how to tell whether your primary surgeon should be performing your revision. You should only have surgery if you are able to make yourself very confident in your surgeon's skills.
I'd love to hear what you think of the morph. Did it seem to address your main concerns?
Your nose is also a good example of why computer imaging is mandatory in rhinoplasty. You need to know exactly what the surgeon is planning to accomplish -- what features he thinks he can change, and by how much he thinks he can change them. When you see his goals, you'll know whether he has an eye for a beautiful nose, and whether he shares your opinion of what constitutes a beautiful nose. You'll also know whether the changes he proposes are enough to be meaningful to you, and whether he understands your wishes enough to address all of your priorities. But remember, you're not hiring him for his skills with the computer. The doctor must then show you his before and after photos to prove that he can actually accomplish what he draws on the computer.
In your case in particular, you need to find a surgeon who understands all of the issues I mentioned, and how they fit together, and who can actually accomplish them in surgery. You don't want to be looking for yet another revision later.