What takes visual information from one side of the body and conveys it to the opposite side; where the optic nerves cross midline,
so that sensory info from one side of the body is processed on the opposite side of the brain

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Your answer to the question, "What takes visual information from one side of the body and conveys it to the opposite side; where the optic nerves cross midline, 
so that sensory info from one side of the body is processed on the opposite side of the brain," would be:

Optic chiasm

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