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
their eyes process light in a more focused way that enhances their perception of space.
think of how a different lenses on an optical zoom camera affects the image. or a telescope lens. your eyes similarly take in light and focus it onto what’s called “photoreceptors”, then your brain processes the information provided by photoreceptors.
the eye of an eagle is heavily focused, at the cost of their field of vision being narrower, but they can percieve smaller changes in light (provided by the movement of a rabbit) in their eyes, sending a “better” signal to the photoreceptors.
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