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


The Role Of Tears

We cry for all kinds of reasons: a stubbed toe, a particularly poignant scene in a movie, freshly cut onions — the list goes on.

Would it surprise you to learn that, chemically, not all tears are the same? Or how about that even though we usually do it when we’re upset, crying is actually good for us?

Tears And Basic Eye Protection

Even when we aren’t crying, our eyes are covered in a protective film of basal tears, which is composed of three layers: the mucous layer right up against the cornea, the middle aqueous layer that is mostly saltwater, and the outer lipid layer that seals everything in and reduces evaporation.

This tear film is essentially all-in-one lubrication, cleaning, and disinfecting system for the surface of our eyes. It washes debris like dust and other particles out of our eyes with every blink and keeps our eyes comfortable and our vision clear.

The lacrimal glands in our eyelids are constantly producing small amounts of basal tears to replenish the tear film. The reason our eyes don’t leak with used basal tears all day is that what doesn’t evaporate drains out through the lacrimal ducts on the inner corners of our eyes and down into our noses. That’s why our noses get runny when we cry!

If you want to know why we wake up with grit in our eyes, check out this video:

Having A Good Cry

Basal tears are present all the time in healthy eyes, but when we cry and the tears overflow, they come in two different types: reflex and emotional tears. Even if crying can be embarrassing and messy at times, both types of tears are actually good for us.

Reflex Tears

Reflex tears are essentially the same as basal tears, but when our eyes get irritated, basal tear production goes into overdrive in an effort to safely flush out whatever caused the problem. That’s why we tear up when we’re chopping onions or get something in our eyes.

Emotional Tears

Most of us know what it’s like to cry and come out the other side of it feeling somehow refreshed and more optimistic about life, even when nothing about the situation that made us cry has actually changed. That’s because emotional tears actually clear out chemicals that build up in times of stress. Crying doesn’t just release pent-up emotion, it also purges harmful chemicals and triggers pain-regulating hormones! No wonder we feel better afterward!

Let’s Keep The Tears Flowing

Basal tears are essential for the health of our eyes, which is why dry eye can be such a serious issue. As we age, basal tear production goes down and dry eye becomes a more common problem. It can also be a side-effect of medication. Dry eye can lead significant discomfort, blurred vision, and even vision loss, so make sure you come see us if you’re experiencing it. In the meantime, keep scheduling regular appointments and having a good cry once in a while!

Our wonderful patients make us cry tears of joy!

Top image used under CC0 Public Domain 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.

Visit Us in Mansfield, MA

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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