Copyright 2014 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.
Patients with facial paralysis present with a constellation of ocular manifestations. Ectropion resulting from downward displacement of the lower eyelid appears after loss of orbicularis tone and function.1 In addition, upper eyelid retraction, resulting in lagophthalmos and a decrease in tear production and/or proper tear distribution and channeling, may result in dry eyes and epiphora. Tear flow is impaired because of a dysfunctional orbicularis oculi muscle and a decrease in transportation of tears.2
Sufyan AS, Lee HBH, Shah H, Nunery WR, Kokoska MS, Shipchandler TZ. Single-Stage Repair of Paralytic Ectropion Using a Novel Modification of the Tarsoconjunctival Flap. JAMA Facial Plast Surg. 2014;16(2):151-152. doi:10.1001/jamafacial.2013.2343