I had a transcutaneous quad bleph procedure over 2 years ago resulting in numerous complications. After conducting a great deal of research on my own, I'm convinced I have all of the signs and symptoms and meet the diagnostic criteria for dehiscence of the lateral canthus. My question is: What physically happens to cause this? Do internal sutures placed during surgery to support the lateral canthus break/loosen? Or does the canthal tendon itself break free from its own supporting structures?