Hyaluronic acid (HA) injection is a popular nonsurgical, rejuvenating procedure to treat glabellar frown lines, which has devastating complications such as blindness and skin necrosis due to the arterial occlusion… Click to show full abstract
Hyaluronic acid (HA) injection is a popular nonsurgical, rejuvenating procedure to treat glabellar frown lines, which has devastating complications such as blindness and skin necrosis due to the arterial occlusion of supratrochlear artery (STA). Therefore, when injecting into the frown lines, knowledge of the STA's depth and plane is necessary to prevent possible adverse events. The aim of this study was to identify the depths of STA in the area of the frown lines in order to maximize safety during filler injections.
               
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