The levator labii superioris muscle is used when a person makes facial expressions. It is shaped like a broad, flat sheet that starts next to the nose and extends to the zygomatic bone, which is more ...

Forty-five eyelids of 43 consecutive patients (16 female, 27 males) that underwent levator resection surgery for ptosis correction were included in the study. Twenty-six of the eyelids had congenital ...