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Night Vision & CVD

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PRESENTATION OUTLINE

COLOUR VISION DEFICIENCY

EVERYTHING YOU NEED TO KNOW

Night vision
And it's similarities
To Colour Vision deficiency

During WW2, colour deficient pilots were able to see the outline of vehicles and people that used camouflage without night vision glasses. Because the loss of colour, these pilots could see in the dark better than others.

But it depends on the condition of the eyes of the person that makes this true.

Based on information, colourblind people can see better in the dark, making them top dog when the squad doesn't have NV goggles with them. That also makes them good spotters when someone is hiding with camouflage.

If I didn't know any better, I would say that because of colourblindness that night vision was discovered, because they are very similar in a sense.

Photo by cliffjamester

The way colour blindness works is that the retina of the eye has two types of light-sensitive cells called rods and cones.

Photo by Viktor Hertz

Both are located at the back layer of the eye that processes images.
Rods work at low conditions to help night vision,

Photo by frankieleon

But cones work in daylight and are responsible for colour discrimination.

Photo by Domiriel

So, people that are colour blind have bad or damaged cones. Just like being blind or deaf, your other senses, in this case your rods,

Photo by mag3737

Are honed to work better. So colour blind people have better rods than non colour blind people. So there are similarities to night vision and CVD.

Photo by pedrosimoes7

In conclusion to this story. ColourVision Deficiency allows some colours of light to be perceived. Night vision allows more light to be perceived, but these types can't be seen by the human eye.

Photo by somegeekintn

So these goggles allow near-infrared and ultraviolet radiation. It's like night vision is steroids for the eyes, and colourblind people are just the jocks. If you see the reference I'm making that's great. But if not then that's ok.

Photo by brx0

To show my point better,
Normal vision: colourAble, some night vision
Colourblind: some colour, good night vision
Night vision goggles: little colour, night visionAble.