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A member asked:
I can voluntarily turn my vision black and white. it as if someone put my vision on highest contrast possible while making it black and white. i can do it in a fully lit room, the whole thing can turn dark on my command. is this normal?
A doctor has provided 1 answer
I do not know this capacity is normal or not but I can't tell you most people can't do that. I wonder if Dr. Machanic, a well known neurologist in this HealthTap forum, has ever seen a person with this capacity.
Answered 8/8/2022
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