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
They definitely have much better than 20/20 vision. 20/20 is the baseline for humans. It means you can read something 20 feet away that an average person should be able read 20 feet away. If you have 20/60 it means you have to be 20 feet away to read something that you should be able to read from 60 feet away. 20/10 means the opposite. You can read something from further away than a person with average vision. An Eagles vision would be off the scale for a vision metric that’s designed for humans. Like far less than 20/1. Basically their lenses can bend way more than ours and focus images that are further away.
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