Fig. 1.

A representative image showing the temporal branch of the facial nerve. OOM : orbicularis oculi muscle, Dx : the distance to the x coordinate line passing from the lateral canthus, Dy : the distance to the y coordinate line passing from the lateral canthus, APD : the distance at the lateral canthus level between the far most anterior branch and far most posterior branch, APA : the angle between the far most anterior branch and far most posterior branch, FN : facial nerve, TT : the distance between the origin point of the temporal branch to the tragus.