What does it mean when scientists say “an eagle can see a rabbit in a field from a mile away”. Is their vision automatically more zoomed in? Do they have better than 20/20 vision? Is their vision just clearer?

Question

What does it mean when scientists say “an eagle can see a rabbit in a field from a mile away”. Is their vision automatically more zoomed in? Do they have better than 20/20 vision? Is their vision just clearer?

In: Biology

Answer 1

20/20 vision doesn’t mean “perect vision” it means that someone sees at 20 feet what an average person sees at 20 feet. Eagles have better vision than that but by the title you seem to think that its odd that an eagle has better than perfect vision.

edit: Thanks for the gold fellow redditor!