This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Afferent component in corneal reflex is mediated by 
Select and explain. 
A. Optic nerve, B. Ophthalmic nerve, C. Facial nerve, D. Occulomotor nerve
B: Ophthalmic nerve
Answer: B: Ophthalmic nerve 
Explanation: Ophthalmic nerve carries sensory fibres from the structures derived from frontonasal process. In injury to ophthalmic nerve, there is loss of corneal blink reflex. This reflex is mediated by V1 which is afferent pathway and VII nerve which subserves as efferent pathway. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3.