This make their prey stand out against the uniform colour of a field. The ability to make out UV light helps these birds spot traces left by prey-urine or fur, for example. They can even see ultraviolet (UV) light. Their eyes pick up more shades and contrasts. Many birds of prey can see colours on an even wider spectrum than humans do. But this doesn’t hold a candle to how eagles perceive the world.

When compared to other creatures, human eyesight does see bright, vivid colour crisply and clearly. Having these traits means that eagles have a visual acuity of 20/5 or 20/4. They also have a much deeper fovea, a cone-rich structure in the back of the eye that acts like a telephoto lens (a long-focus lens) on a camera. These types of birds have such strong vision because their retinas are packed with light-detecting cells called cones. Don’t worry, we didn’t ask your dog Spot to bark out the letters on the Snellen eye chart-animal vision is measured by other tests.īut no one species even comes close to eagles and other birds of prey. Dogs or cats, for example, can only see clearly from 20 feet while a human with otherwise normal vision can see from approximately 100 feet. Most animals don’t come close to the 20/20 visual range. Many patients have even reportedly achieved 20/15 vision following laser vision correction, which is impressive, especially if you’ve had to wear glasses for most of your life. A surgery like LASIK can give a person 20/20 vision. The clearest vision a human can obtain is through the science of a vision correction procedure.

The best recorded vision in humans is 20/10 vision-the ability to see objects clearly from 20 feet when a normal human can only see them at 10 feet. When a person has 20/20 vision, they can see a small row of text clearly from 20 feet (approximately six metres). A person’s visual acuity is measured by whether they can read a Snellen eye chart (the measurement system many optometrists use to test vision, a chart featuring rows of letters at varying sizes). Essentially, this term is a measurement of visual acuity. 20/20 vision, explainedĢ0/20 is a common term that describes great vision. There are many factors that contribute to an eye’s visual acuity: size, dimensions of the parts inside the eye, and the number of receptors located inside the retina are all factors that strengthen visual acuity. Visual acuity is the term used to describe the eye’s ability to make out sharp, crisp details without any blurriness. In this blog post, we examine the strength of eagle eyes, pitting man versus beast, establishing how human eyesight measures up to eagles’. While humans have adapted to depend on our other senses, our strong eyesight has helped us in a big way, evolutionarily-speaking. Humans and birds of prey-like eagles-have something in common: they’re both creatures that rely on eyesight in their daily lives.

Eagle eye vision