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Certified Ophthalmic Medical Technologist (COMT)

Category - COMT

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Which nerve palsy impairs the superior oblique muscle, causing paresis of vertical gaze, mainly in adduction?

Explanation

Answer: B - Fourth (IV) cranial nerve palsy impairs the superior oblique muscle, causing paresis of vertical gaze, mainly in adduction.

The fourth cranial nerve can affect either one or both eyes. Due to the weakness of the superior oblique muscle, the eyes do not adduct normally.

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