Chapter contents
Overview
Origin & central course
Intracranial course
Final innervation
Coordination of muscles
Lower motor neuron lesion
Upper motor neuron lesion
MLF syndrome
| Cranial Nerve VI - Abducens Nerve | Page 7 of 8 |
Clinical Correlation - Upper Motor Neuron Lesion
Damage to the pontine lateral gaze center may result in conjugate paralysis of lateral gaze to the affected side.
This is indicated by an inability of the patient to fixate on an object placed laterally to the affected side. Specifically it is:
- Inability to abduct the eye on the affected side past approximate midline gaze. Inability to adduct the eye opposite the lesion past midline gaze.
- The end result is that neither eye is moved to effectively fixate on the target object.
Figure 6-7. Upper motor neuron lesion.
