Left brow dropped 1 week after brow lift - how can it be corrected? (photos)

Prior to my endoscopic brow lift my left brow had dropped down lower than my right, My brows were even after surgery however I felt a strong sensation on the inner side of my left brow and kept asking if they were even, The strong sensation remained until that brow dropped back down lower a week a later. Looking for someone who may have had experience with a patient with a similar experience, What can be the cause and how can it be corrected?