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NBME 19 Answers

nbme19/Block 3/Question#5

30 yo woman, 1 week of visual difficulty

Right optic nerve

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submitted by aliyah(5),

The right eye's efferent nerves are working, as left eye stimulation causes a change in the right eye. The right eye optic n. damage causes it's afferent n. to be damaged. It can't carry info to brain, so right and left eye can't constrict to light.