This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Ophthalmology
[{'content': 'A patient with this condition , presents with retraction of eye lid on chewing. This represents \nSelect and explain. \nA. Abducent palsy, B. Third nerve misdirection syndrome, C. Marcus gunn Jaw winking syndrome, D. Oculomotor palsy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Marcus gunn Jaw winking syndrome Marcus Gunn Jaw Winking Ptosis is a congenital ptosis Associated with synkinetic movements of upper lid on masticating movements of the jaw. It is usually unilateral but rarely presents bilaterally. Affects males and females in equal propoion . Etiology This synkinetic movement results from a congenital aberrant connection between motor branches of trigeminal nerve controlling muscles of mastication and superior division of oculomotor nerve controlling the levator palpebrae superioris Ref : ak khurana 7th ed', 'role': 'assistant'}]