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
All the muscles are involved in accommodation reflex except: 
Select and explain. 
A. Medial rectus, B. Lateral rectus, C. Ciliaris muscle, D. Sphincter pupillae
B: Lateral rectus
Answer: B: Lateral rectus 
Explanation: - 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