Congenital ptosis is when the eyelid height is droopy from birth due to developmental dystrophy of the levator muscle, which is one of the muscles responsible for lifting the eyelid. There are two main surgeries to repair this ptosis, depending on the functional ability of the levator muscle.

Levator advancement: This procedure advances or resects the levator muscle through an eyelid crease incision.

Frontalis sling: This procedure involves a sling placed within the eyelid and attached to the brow muscles. The eyelid is elevated by raising the brow.