A 55-Year-Old Man with Poorly Controlled Hypertension and Type 2

A 55-year-old man with poorly controlled hypertension and type 2 diabetes mellitus comes to the emergency department due to difficulty seeing.  He has had blurry vision for the last 2 weeks, and 1 day ago he suddenly noticed a shadow develop across the visual field of his left eye.  The patient has no recent headache, double vision, vertigo, light sensitivity, or nausea.  On examination, pupils are equal and reactive to light.  There is an area of reduced vision in the left eye.  Funduscopic examination reveals a flame-shaped hemorrhage in the left temporal hemiretina.  The transmission of visual information through which of the following neural structures will be disrupted?

A) Left inferior colliculus
B) Left lateral geniculate body
C) Left medial geniculate body
D) Medial optic chiasm
E) Right inferior colliculus
F) Right lateral geniculate body
G) Right medial geniculate body

Correct Answer:

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