The corneal reflex is an exteroceptive reflex and is classified as one of the brainstem reflexes.
Afferent limb
The afferent limb of the reflex arc travels via the ophthalmic nerve, a branch of the trigeminal nerve, in response to tactile stimuli.
Efferent limb
The efferent limb of the corneal reflex travels via the facial nerve, which triggers contraction of the orbicularis oculi muscle.
Clinical significance
Loss of the corneal reflex is usually correlated with damage to the brainstem.