Table 1.

Choice of surgical technique according to the grade of ptosis and levator function

Technique	Indication	Levator function	Complications
Fasanella–Servat	Mild congenital ptosis	>10 mm	Dermatochalasis, undercorrection, overcorrection, bleeding, wound dehiscence, corneal abrasion, skin crease level defect
Aponeurosis surgery	Mild ptosis	>10 mm	Asymmetric skin crease
Levator resection	Mild ptosis	>5 mm	Corneal exposure, entropion, contour abnormality, conjunctival prolapse
Frontalis sling	Amblyopia prevention Severe ptosis	<2 mm	Corneal exposure, infection, granulomas
Whitnall ligament sling	Mild–severe ptosis	>3 mm	High risk of reintervention
Muller resection	Mild ptosis	>10 mm	Corneal abrasion, undercorrection