“…Reported surgical interventions included bilateral levator excision with bilateral frontal sling [13,19,21] (3 articles), unilateral levator excision with bilateral frontal sling [16,19,23,33] (4 articles), unilateral levator excision with unilateral frontal sling [16,28,29,32,33] (5 articles), the Neuhaus/Lemagne method [11,13,17,29,35,37] (6 articles), levator plication/resection without eyelid suspension [13,15,30,33] (4 articles), the Motais-Parinaud procedure [26,33] (2 articles), and the use of an orbicularis oculi muscle flap [27,30] (2 articles). Although the Neuhaus and Lemagne methods differ slightly, the procedures are not significantly differentiated with regard to practice and analyses of outcomes in the majority of studies we found.…”