Evaluation of intraoperative lagophthalmos formula for levator resection in congenital ptosis in Egyptian patients.

Purpose: To evaluate the recent intraoperative lagophthalmos formula method for levator resection in determining postoperative lid height in congenital ptosis on Egyptian patients.

Methods: This is a prospective case series which included 20 eyelids of 17 Egyptian children with congenital ptosis whose levator function is 4 mm or better. They underwent levator muscle resection guided by the recently presented intraoperative lagophthalmos formula.