University:
Kentucky State University
Course:
BIO 303 | Human Physiology
Academic year:

2022
Views:

31

Pages:

23
Author:

FrextWhestembki

Control of eye movement Fig. 28-13 Third Nerve Palsy Eye “down and out” Trochlear Nerve Palsy Note: Right eye •Instead of intorsion and depression action of superior oblique •See extorsion and elevation Observe how the axes over the right eye shift when patient generates a compensatory head movement Attempted Correction: •Patient tilts head to her left •Tucks chin to foveate on object •Left eye will align accordingly Conjugate Movements: 1. 2. 3. 4. Saccadic Tracking (pursuit) Vestibulo-Ocular Reflex Optokinetic Reflex Disconjugate Movements: 5. Vergence Basic pathway for controlling saccadic eye movements Basic pathway for controlling saccadic eye movements MLF Basic pathway for controlling visual pursuit eye movements L R L R L R Disconjugate eye Conjugate eye movements movements L Conjugate eye R X movements Internuclear Ophthalmoplegia Disconjugate eye movements L R ONE-AND-A-HALF SYNDROME Brainstem Syndromes Involving Corticospinal Fibers and Cranial Nerves