OverviewDrooping of the eyelid is called ptosis. Ptosis may result from damage to the nerve that controls the muscles of the eyelid, problems with the muscle strength (as in myasthenia gravis), or from swelling of the lid.
Update Date 6/15/2015
Updated by: Paul B. Griggs, MD, Director of Vitreoretinal Surgery and Disease, Northwest Eye Surgeons, Seattle, WA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.