The Free Press, Mankato, MN

Local News

February 16, 2013

It’s all in the eyes: Human eyes speak about what they see

The human eye is an amazing organ. It allows us to see a myriad of colors, judge distances and navigate our world. It conveys information about our surroundings directly to our brain for processing.

A red-tailed hawk’s vision is considered to be eight times more acute than our own, allowing them to see small prey from high perches. They also have five times more sensory cells per millimeter of retina than humans, making their binocular vision very sensitive, and specialized to hunting.

A red-tailed hawk’s eyes may work well for them, but the human eye has one thing the hawk’s eyes lack. Human eyes work in both directions.

Our eyes don’t just soak in our environment, but allow our thoughts and feelings to be conveyed out through them. Wonder, fear, excitement, anger can all be communicated through our eyes.

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