1. Introduction

    If ptosis is severe, the function of the levator palpebrae is poor. Most frequently, ptosis surgery involves shortening or reattaching the muscle at its site of insertion on the superior tarsus. The upper eyelid is marked at the desired height so it matches the opposite eyelid. Local anesthetic is injected by the surgeon. The skin is incised along the upper eyelid crease, and dissection proceeds until the orbicularis oculi is reached. At the medial and lateral ends of the tarsus, scissors incisions are made, and a clamp is placed between the two incisions. The levator muscle is resected as desired, and the eyelid height is evaluated. The skin incision is then closed, with any excess being excised.

2. Preoperative assessment and patient preparation