I've imported a file and it seems corrupted, it in not due to Blender.
But I wonder if this "corrupted" mesh is still usable or not?
Originally, it was a haircut.

When I switch to edit mode, nothing is shown and I cant use "make edge/face".
It says "more vertices are needed".

EDIT: here is the file: http://www.mediafire.com/download/5sk6acagdbu7ea0/untitled.zip

[mesh corrupted][1]


  [1]: https://i.sstatic.net/C5aOp.png