how far can a person with 20 20 vision see at night?

Answer 1

I'm not sure there is a real answer, unless it is "whatever anyone else with 20/20 vision sees at night." 20/20 is a standardization where, from 20 feet away, you see a standardized object visible to others with "normal" vision of 20/20. My vision is something like 20/400 - I see at 20 feet what people with standard "normal" vision see at 400 feet. But it has to be standardized to be meaningful. Night and other visual obstacles would interfere with a standard.

Answer 2

It depends on the amount of light, intensity, and color of the object. At night, your eye uses its rods (versus the cones during the day). Rods are not very good at detecting color or helping us determine how far away something is.

It takes about 30 minutes for your eyes to adjust to the darkness. The previous post is right about pirates. Also, during WWII pilots would sit in completely dark rooms while awaiting their mission. So that if they got a night mission, their eyes would be ready to go.

I have 20/20 +1 vision, and I am also I pilot. During the day I can see objects clearly up to 20 miles.

Hope this helps!

Answer 3

depends on ambient lighting,i can probably see a hundred feet.

did you know that pirates wore eye patches for night vision,

they had 1 eye for day and 1 for night so other pirates couldnt sneek up on em,your eyes take a while to adjust so if you keep one in the dark its automatically ready when you need it(mythbusters)