Everybody’s anatomy is unique. And the injection of fillers is increasingly popular nowadays.
As real as anatomical variation is, so is the risk of complications, such as skin necrosis and even blindness,
due to intravascular injection of hyaluronic acid during a filler treatment of the face.
So performing such a treatment with standard text book anatomy in mind is - although essential - often not enough.
Knowledge of a patient’s unique anatomy is key.