Klinische Monatsblätter für Augenheilkunde
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Klin Monbl Augenheilkd
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Klin Monbl Augenheilkd · Apr 2016
Case ReportsTemporary Medial Upper Eyelid Lagophthalmos after External Dacryocystorhinostomy.
Background. Report of three cases of medial upper eyelid lagophthalmos as complication of external dacryocystorhinostomy. History and Signs. ⋯ Lagophthalmos resolved spontaneously within three months after surgery, first by improvement of voluntary eyelid closure and then of spontaneous blinking. Conclusions. Temporary lagophthalmos can occur as a complication of external dacryocystorhinostomy, most likely due to damage of the (only recently described) superficial buccal and/or zygomatic branches of the facial nerve that run upward to cross over the medial ligament and innervate the medial part of the orbicularis oculi muscle.