Is it true that humans have night vision?

I heard if you stay in ABSOLUTE darkness with your eyes open for like two hours, you have the ability to see in the darkness similar to what cats and dogs can do normally. I don't belive it and I don't really want to try it because it's too long of a time to do nothing for so long in the dark so is there anyone who knows?Is it true that humans have night vision?
Sort of. If you sit in darkness long enough, your pupils will dilate until they are fully open, letting in as much light as possible.





Humans have two types of receptors in their retinas. The first are cone cells, which see in color and are wired to nerves on a 1:1 basis. The second type is the rod cells, which can't distinguish color. They are set up so that many rods are wired into 1 nerve, boosting their sensitivity. In other words, they provide a larger target for incoming photons. The down side is that this setup reduces clarity. That's why images in the dark look fuzzy. The rods are also located primarily farther away from the center of the retina. That's why, if you want to look at something in the dark, you'll see it better if you look slightly to the side, rather than directly at it.





Humans don't have the ability to see in complete darkness. There has to be some light to bounce off an object and into the eye. Animals also have some adaptations that humans don't have. Cats, for example, have a very dense retina, but also have a reflective layer inside their eyes to catch and use all avalable light, giving them superior night vision (it's why cats' eyes appear to 'glow' if light is shined into them).Is it true that humans have night vision?
You can never see as good as a cat at night.





If you spend time in the dark yes your eyes will adjust, but you can not see in absolute darkness

avast