What does it mean when wildlife biologists say that “an eagle can see a rabbit in a field from miles away”? Does this imply that their vision is automatically more zoomed in? Do they have better than 20/20 vision, or is their vision simply clearer?

Question

What does it mean when wildlife biologists say that “an eagle can see a rabbit in a field from miles away”? Does this imply that their vision is automatically more zoomed in? Do they have better than 20/20 vision, or is their vision simply clearer?

In: Biology

Answer 1

They have better than 20/20 vision. 20/20 does not mean “perfect” vision. 20/20 means “average” vision. You can see at 20 feet what the average person can see at 20 feet. Some people actually have better than 20/20 vision. Eagles have much better than 20/20 vision.

Not necessarily that it is “zoomed in.” Just that they can pick out smaller details. They have a higher “resolution”. More pixels