This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'Traumatic hyphaema (blood in the anterior chamber) occurs due to injury to the iris or ciliary body vessels. The circulus iridis major gives off branches to the ciliary processes. Ref:Comprehensive Ophthalmology By AK Khurana, 4th Edition, Page 404 \nSelect and explain. \nA. Lateral rectus and abducent nerve, B. Superior rectus and trochlear nerve, C. Medial rectus and superior division of oculomotor nerve, D. Inferior oblique and inferior division of oculomotor nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lateral rectus muscle supplied by the abducent nerve is involved in the abduction of the eye. Since the right eye of this patient is turned medially his right lateral rectus muscle and abducent nerve is likely to be damaged. Ref: Comprehensive Ophthalmology By AK Khurana, 4th Edition, Page 313.', 'role': 'assistant'}]