Hayden Optometric Inc.
94 N Main St Mansfield MA 02048 +1 508-339-3952
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(508) 406-9342

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Mansfield, MA


Unique Eyes Of The Animal Kingdom

We are always talking about how amazing our eyes are! But have you ever stopped to think about how remarkable animals’ eyes can be?

Sight is important to us as human beings, but for animals in the wild, vision is a matter of life and death. And due to differences in environment, each species’ vision is different from the next!

Some Of The Animal Kingdom’s Most Fascinating Visual Systems

Some animals have really outdone themselves in the vision category! Here are some of our favorite animal eyes.


If you’ve ever seen a chameleon, maybe you’ve noticed that their eyes go in all sorts of different directions! A chameleon’s eyes have the ability to move independently of one another, allowing them to have a 360 degree field of vision.

Chameleons’ eyelids are also fused–they cover almost the entire eyeball except the pupil. These muscular, protective eyelids allow each eye to rotate nearly 180 degrees for an even wider range of vision!


The tarsier, a small primate, is known for its extremely large peepers. Even though its body is small, about the size of a squirrel, it has the largest eyes of any mammal relative to its body size. Each eyeball is about the same size as its brain. If humans had the same eye to body ratio as the tarsier, our eyes would be the size of grapefruits!

Similar to owls, the tarsier’s eyes don’t rotate in the eye socket. Because of this, they’ve developed the ability to rotate their necks 180 degrees!


Some of the most unusual animal eyes belong to the leaf tailed gecko. Instead of circular pupils like ours, their pupils are vertical with a series of pinholes that widen at night, allowing as much light as possible into the eye. These geckos have incredible night vision!

The leaf tailed gecko also doesn’t have eyelids. Because of this, they often have very detailed and intricate eye patterns that help to camouflage them. Since it can’t blink, they clean their eyes with their tongues! Can you imagine licking your eye every five minutes? Pretty crazy!

Mantis Shrimp

The award for the most complex visual system in the animal kingdom goes to the mantis shrimp. Where humans only have three types of color receptors, the mantis shrimp has 12! Along with color, their eyes can detect ultraviolet, infrared and polarized light. Like the chameleon, each eye has the ability to move independently and can rotate up to 70 degrees.

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Just Remember, Our Eyes Are Great Too!

Of all the eyes in the animal kingdom, we think yours are the best! As remarkable as some of these animals’ eyes are, ours are equally fascinating. Because of them, we’re able to see picturesque sunsets and mountain ranges and every beautiful sight in between. As your eye care provider, we want to ensure you have healthy vision for a lifetime!

Thank you!

Top image by Flickr user Umberto Salvagnin used under Creative Commons Attribution-Sharealike 4.0 license. Image cropped and modified from original.
The content on this blog is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of qualified health providers with questions you may have regarding medical conditions.

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Discover everything our practice has to offer in person at our Main Street location.


94 N Main St
Mansfield, MA 02048

Contact Information

Phone: 508-339-3952
Fax: +1 (508) 339-6907
  • Monday: 9:00am - 5:00pm
  • Tuesday: 9:00am - 6:30pm
  • Wednesday: 9:00am - 4:00pm
  • Thursday: 9:00am - 6:30pm
  • Friday: 9:00am - 3:00pm
  • Saturday: 8:30am - 11:30am
  • Sunday: Closed
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Why Choose Hayden Optometric?

Our Brands

Our Brands

Your eyes are unique, and so is your sense of style, which is why selecting your frames and lenses is a very personal choice. Your frames should fit your sense of style, and your lenses should suit your vision needs. Hayden Optometric Inc. is proud to offer a wide variety of brands so that we can help you find the frames and lenses that best suit your needs and style.

We're Revolutionizing Eye Care

We're Revolutionizing Eye Care

Hayden Optometric wants to be a thought leader in the eye health industry. We are always dedicated to making life better for our patients. In fact, our own Dr. Joel Hayden has leveraged his knowledge as an optometrist and nutritionist to develop his own line of eye wipes and fish oil to bolster your eye health.



Dr. Hayden is also the founder of HALT Myopia; the Hayden Advanced Lens Therapy System. Designed for nearsighted kids, HALT Myopia has been called “LASIK for kids,” only without lasers, scalpels, pain, recovery, or risk of overcorrection.

Read more about HALT and other methods of myopia control.

The Future of Eye Health Technology

The Future of Eye Health Technology

We really value innovation. That’s why we rely on some of the most advanced technology available to help us examine, diagnose, and treat all of our patients. When you choose Hayden Optometric, you know you’re getting some of the most state-of-the-art equipment the industry has to offer.

Hayden Optometric is powered by WellFed Nutrition.

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