![]() ![]() Proteins in your eye also come into play, but I won’t get into that. This leaves your eye’s rods, which are used to see in the dark, unaffected by the red light. The color red is too bright for the rods in your eyes to see so it’s only picked up by the cones. ![]() Your eye uses cones to see in bright lights and rods to see in the dark. When you look at the visible light spectrum you can see red has the highest wavelength so it needs the most amount of light to become visible. Red Light (Best): Red light is by far the best color when it comes to preserving night vision.Here’s a brief rundown of each color of light ranked from the best to the worst. So now that you know that reds the best for preserving night vision and green helps with contrast/clarity, lets talk about all of the advantages/disadvantages of different colored lights. Green light is just behind behind red when it comes to preserving night vision, but it’s better for improving clarity and contrast. Red lights are best for preserving night vision, but it will be harder to make out fine details in the dark. When it comes to preserving night vision there are two main choices to choose from. What Color Light Is Best For Preserving Night Vision? In the rest of this post I’ll explain why red lights are best for preserving night vision, and explain when it’s better to use green, blue, or white lights. You can use a red light in most situations, but there are times where it’s better to use green or blue lights. You won’t have the same jarring effect that you would get from transitioning from bright white light to total darkness. Using a red/green light in the dark slows down the constriction of your pupil, which helps delay your loss of night vision. What color light won’t ruin night vision? Red lights are the best option for preserving night vision, but green lights also help with a few added benefits (I’ll explain below). Thankfully, there are different colored lights that help preserve night vision when transitioning from light to dark (and vice versa). This leads to limited night vision while your body responds to the change of light. Bright white light causes your pupils to constrict blocking out light and it takes time for them to expand (aka dilate) once you shut off the light. Going from a bright white light to pure darkness can be jarring. ![]()
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