When Trochlear Nerve Is Damaged?
Thus, the Most Common Cause of an Acquired Defect of the Trochlear Nerve Is Trauma. [13] Traumatic Trochlear Nerve Palsies Are Associated with Motor Vehicle...
Thus, the most common cause of an acquired defect of the trochlear nerve is trauma. [13] Traumatic trochlear nerve palsies are associated with motor vehicle accidents and boxing, as they involve rapid deceleration of the head.
What happens if the trochlear nerve is damaged?
Injury to the trochlear nerve cause weakness of downward eye movement with consequent vertical diplopia (double vision). The affected eye drifts upward relative to the normal eye, due to the unopposed actions of the remaining extraocular muscles.
How do you test for trochlear nerve damage?
Step 1: Identification of the hypertrophic eye in the primary position. Step 2: Identification of the hypertrophic eye in the right and left gaze. Step 3: It is also known as the Bielschowsky head tilt test. The head is tilted to each side to determine the side on which the hypertropia worsens.
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