<prompt> Answer this question truthfullyWhich cranial nerve is responsible for the afferent limb of the corneal reflex, which tests the sensory function of the cornea and eyelids?  <response>: <reason> The first branch of the fifth V1 cranial nerve, also known as the Nasociliary nerve of the Ophthalmic nerve, is responsible for the afferent limb of the corneal reflex. 