This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Eye, Nose and Ear, Subject name: Anatomy
[{'content': 'All the muscles are involved in accommodation reflex except: \nSelect and explain. \nA. Medial rectus, B. Lateral rectus, C. Ciliaris muscle, D. Sphincter pupillae', 'role': 'user'}, {'content': 'Answer: B \nExplanation: - Lateral rectus is not involved in accomodation reflex. - Accommodation reflex involves : Convergence of eyeball - by medial rectus Constriction of pupil - by sphincter pupillae Increase in thickness of lens -by ciliaris muscle', 'role': 'assistant'}]