This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular motility and squint, Subject name: Ophthalmology
[{'content': 'Duane syndrome involves \nSelect and explain. \nA. Superior oblique, B. Inferior oblique, C. Lateral rectus, D. Superior rectus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 357) Duane retraction syndrome represents the most frequent and most prominent congenital cranial dysinnervation disorder (CCDD)It is due to fibrosis of the lateral rectus or an innervational anomaly with Co-contraction of the lateral and medial rectiThere is a deficiency of abduction, associated with impaired adduction, contraction of palpebral fissure and oblique movements of the eye', 'role': 'assistant'}]