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Green could help doctors see better as they keep looking at bloody things and stare at red color for too long so the red signal in the brain actually fades, which could make it harder to see by time..blue or green can refresh a doctor's vision of red things as brain interprets colors relative to each other and the relative color for red is blue..Looking at something green from time to time can keep someone's eyes more sensitive to variations in red, according to John Werner, a psychologist who studies vision at the University of California, Davis.

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13y ago

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