Get a grip. How does a photographic plate approximate human vision? The idea of these glasses, another version of the bonafide aura glasses is to enhance or attune to a narrow range between "blue" and "red". Which overlap to make "indigo". Not real scientific but neither is looking at a color and going "green" "yellow and blue make green". The apperance of color and its likeness (wavelength) are different issues. I believe the esoteric range we are dealing with is 435nm. Its not the actual eyes that pick this up as much as the "brain". Think of it in another way. 3d glasses. But here you have red on one side and blue on the other the brain "extrapolates" the image producing a 3d effect. However, we want out third eye and or visual cortex which already does quite a bit of reversing and upside-downing. We are trying to find the "center" which is the spike spectrum between two or more colors. Any of the know-it-all's care to explain how to filter blue so that only yellow-green gets through into the brain? In other words, cut blue but using two colors (negative blue photo filter wont work, a camera and film doesnt approximate the human brain). I've seen makeshift infrared camera's in a oss spy book that was basically IR filter over a camera lens using IR film. Problem is you cant "see" what your taking a picture of. The yellow-green issue puts us closer to understanding the "center" of the spike spectrum artifact produced by merging or combining the spectrums of two or more (maybe ir and or uv filter helps) colors to help our brain tune into a narrow band where "red" and "blue" overlap. In this case its more of "short wavelength ir" and "short wavelength ultraviolet". Or primary red and SWUV or whatever. There are actually more than one answer to the question producing different empirically observable results. People are taking his page too seriously. They arent IR amplification goggles. It clearly says that. The terms "blue" and "red" and IR are used loosely because it really matters whats really there not what we think we see. The congo blue or congo blue and red seem to miss the mark a bit. The spike isnt even really close to 435nm anyways. There is actually something quite fishy about getting a straight answer as to what wavelength(s) of light a color of glasses or sports lenses or filters for photographs are. You'll find that "purple" shooting glasses arent really violet or indigo but just particles of red and green. Same with so called pink or even the filter you put on auto glass which is (using a tritone scale) magenta or cyan particles to create a smoke or grey wash. Likeness is not appearance with is a pretty good premise for people to start from. Instead of deriding people, post hard data that makes the issue easyer to talk about. Is there an equasion for calculating spike spectrums of combined wavelengths of color/hue according to the normal range of human sight? Someone please answer my question about 555nm. What two colors wavelengths will converge to create a 555nm spike spectrum when worn over the human eye as "filters" (not glasses that let in light from the sides).