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Old April 25, 2009, 12:08 AM   #3
Senior Member
Join Date: January 27, 2009
Location: Easten PA
Posts: 277
Yes to night blindness. It also washes out red. Can't see blood under a red light.

Aviation is moving more to a certain wavelength of blue as better than red for combatting night blindness. White for good vision under illumination and red of blue to prevend the cones from being "burned out" and preserve night vision.
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