He had bilateral paralysis.

Moebius syndrome is a congenital neurological disorder with bilateral paralysis of both the facial and abducens nerves.

Once the patient is stabilized, surgical treatment may be beneficial especially when paralysis occurs in both aretynoid cartilages (bilateral paralysis).

Bilateral paralysis is another disorder that may require medical or surgical interventions to return vocal cords to normalcy; unilateral paralysis may be treated medically or behaviorally.