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3 Responses to “How Good Is Human Night Vision?”

1. Michelle Says:
   February 15th, 2011 at 5:37 am

   if we come out of somewhere where it is light, and then go into complete darkness. initially we can’t see a thing, but after a minute our eyes adjust to the dark and we can more or less see better. but cats have different eye structure to us, i don’t know the biology of the difference, but i heard that cats are quite short sighted in daylight, and see better in the dark.

2. DNAunion Says:
   February 15th, 2011 at 5:37 am

   Compared to a cat, very bad.

   We have a pigmented epithelium at the back of our eye that absorbs photons that did not strike a photoreceptor on the way in.

   Cats have a tapetum lucidum at the back of their eye that reflects light not absorbed by photoreceptors on its way in back out toward the photoreceptors: so photons get two chances to impinge on a photoreceptor, allowing cats to see much better than us in very dim light.

3. Rudie Can't Fail Says:
   February 15th, 2011 at 5:37 am

   Humans have horrible night vision compared to most other mammals.

   Cats have some of the best nightvision in the animal world, so compared to a house cat, we’re completely blind.