Posted on by dp

7. Internuclear ophthalmoplegia:

  1. Results in double vision, due to lesion of the medial longitudinal fasciculus (MLF), which connects the nuclei of oculomotor and abducens nerves. (T/F?)
  2. Is always  unilateral. (T/F?)
  3. Diplopia  is elicited with the gaze to the opposite side of  the affected eye. (T/F?)
  4. Affected eye shows impairment ( slower rate or failure ) of adduction. (T/F?)
  5. Contralateral (not  affected) eye shows vertical nystagmus  with abduction. (T/F?)
  6. If the left eye is affected, the patient will have diplopia when looking to the left. (T/F?)
  7. With rostral MLF lesions, near the oculomotor  nucleus, convergence of  the eyes may be impaired. (T/F?)

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  2. F
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  7. T

Henry Vandyke Carter [Public domain], via Wikimedia Commons

  1. Internuclear ophthalmoplegia is also called medial longitudinal fasciculus syndrome  or MLF syndrome.
  2. MLF syndrome can occur unilaterally or bilaterally. Bilateral internuclear ophthalmoplegia is highly suspected for multiple sclerosis, specially with young people.
  1. Contralateral eye characteristically shows horizontal nystagmus with abduction.
  2. If the left eye is affected, the patient will show horizontal diplopia with gaze to the opposite, right side.

Video: https://www.youtube.com/watch?v=MWJz75R01s4