Fig. 3. Marcus-Gun jaw-winking ptosis (synkinesis linking fifth cranial nerve to third cranial nerve ptosis). A. Baseline congenital ptosis of the right eye. B. On jaw opening, the right lid is elevated. (Adapted from American Academy of Ophthalmology. Orbit, Eyelids and Lacrimal System; BCSC Section 7. San Francisco: American Academy of Ophthalmology, 2000-2001:Fig XII-15)