Facial Nerve Weakness After Parotidectomy: Eye Blinking Difficulty and Recovery

After parotidectomy (parotid gland removal), the facial nerve (CN VII)—which runs through the gland—may be temporarily stretched, bruised, or injured, causing temporary facial nerve palsy.

Eye-Specific Effects

• Inability to blink fully (lagophthalmos) on the affected side.
• Reduced tear production (nerve to lacrimal gland affected).
• Corneal exposure risk: Dryness, irritation, ulceration if eye doesn't close completely.

Management

• Artificial tears (day) + lubricating ointment (night).
• Taping eye shut at night or moisture chamber goggles.
• Protective glasses outdoors.
• Facial nerve physical therapy (neuromuscular retraining).

Recovery

Most cases are neurapraxia (conduction block) resolving in weeks to 3–6 months. Permanent weakness is rare (<5%) with modern nerve-monitoring techniques. Follow up with your surgeon and ophthalmologist.