Eye Mvmt Disorders Flashcards
If you have problem with orbital apex.
A) what are the system structures present?
B) associate sign/symptoms?
A) superior orbital fissure, optic canal
B) space occupying, CN 2
If you have problem with nerve.
A) what are the system structures present?
B) associate sign/symptoms?
A) subarachnoid space, circle of Willis, cavernous sinus, superior orbital fissure, posterior orbit
B) aneurysm, other space occupying lesion, inflammation
If you have problem with nerve nucleus & interstitial axons (midbrain).
A) what are the system structures present?
B) associate sign/symptoms?
A) Descending pyramidal system rostrum to decussation, red nucleus (motor system)
B) contralateral voluntary somatic mvmt,
incoordination
If you have problem with nerve nucleus and interstitial axons (pons).
A) what are the system structures present?
B) associate sign/symptoms?
a) descending pyramidal system rostral to the descussion, vestibular nuclei, cerebellum is nearby
B) contralateral voluntary somatic mvmt, incoordination, dysmetria, imbalance, dizziness
In addition to EOM problem what if there is a problem at the orbit.
a) what structures are present?
b) what are the associated signs and symptoms?
a) EOM, nerves, fat, fascia, connective tissue
B) space occupying, CN 5
If you have problem with premotor (brainstem).
A) what are the system structures present?
B) associate sign/symptoms?
A) MLF, SC, vestibular system, cerebellum
B) incoordination, dysmetria, imbalance, dizziness
If you have problem with premotor (supra nuclear).
A) what are the system structures present?
B) associate sign/symptoms?
A) Frontal and occipital lobes
B) aphasia, psychological, VF DEFECT
If you have problem with vestibular system, CN8.
A) what are the system structures present?
B) associate sign/symptoms?
A) Facial nerve (CN 7), auditory system, descending pyramidal system rostral decussation
B) contralateral voluntary somatic mvmt, facial asymmetry, reduced auditory sensitivity
