system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does night vision have a greenish tint?
gpt
The image created by night vision is black/white.  Human eyes are most sensitive to green light.  Since you're in the dark and it takes your eyes time to adjust to light/dark, you only want to make the image as bright as necessary.  So the image is given in green to make it more comfortable to view in the dark, possibly for long periods.