Epiphora Due to Weak Lid Muscles

Comprehensive Midfacial Elevation for Ocular Complications of Facial Nerve Palsy

“…Improvement in these measures of corneal surface wetting reduces reflex tearing that overwhelms the compromised lacrimal drainage pump of these patients and causes persistent tearing. 29 We found that 2 patients experienced worsening of their nerve function as exhibited by increased upper eyelid retraction and lagophthalmos (Figure 3), presumably due to continual nerve fiber dropout from a reduced number of surviving fibers. Despite the increases in lagophthalmos due to decreased upper eyelid function, both patients' lower eyelids remained elevated and well apposed to the eye (Figure 3).…”