Method of elicitation
- Stand on one side of the subject and ask him to look at a far object on the opposite side.
- A sterile piece of cotton is twisted into a wisp and bring it from the back of the subject avoiding his visual attention.
- Touch the conjunctiva and see the response. Both eyes are separately tested.
- Observation: Bilateral closure of the eyes. Reflex pathway
- Receptors: Touch receptors of the conjunctiva
- Afferent limb: Ophthalmic division of trigeminal nerve
- Efferent limb: Facial nerve
- Effector muscle: Orbicularis oculi
- Centre - Pons (Nucleus of Trigeminal Nerve)
