Fatal Vision (goggles)
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Fatal Vision goggles are a line of training tools for simulating the effects of alcohol and drug intoxication without actually using these substances.
Five of the models are intended to simulate five ranges of blood alcohol content: .06% or less, .07% to .10% or so, .12–.15% or so, .17-.20% or so, and .25% or so.[1]
A sixth model is said to provide "extreme blurriness and double vision", and thereby simulate intoxication with drugs other than alcohol.[2]