Avoiding Pretarsal Denervation in Lower Blepharoplasty Incisions: Refined Pretarsal Motor Nerve Anatomy

There is a safe zone for the lower blepharoplasty muscle incision which, if adhered to, will preserve the pretarsal motor supply and prevent muscle atrophy. There is an infraorbital danger zone, where surgeons should pay special attention to avoid electrocautery heat injury.