Blue Light FAQs

WHERE DO YOU SHIP FROM, AND HOW LONG DOES IT TAKE?

We're based out of the Pacific Northwest in Portland, OR, and we ship our orders from our warehouse in Chandler, AZ. 

Our lightning-fast USPS shipping takes 3-5 days nationwide.

Our Canada, Australia, and UK shipping takes 14-20 days. 

HUH? WHAT IS BLUE LIGHT?

Imagine seeing light refracted through a glass or crystal, resulting in a rainbow being cast out the other side. Regular light is really comprised of a range of various hues. See if you can name all of the colors in the rainbow acronym, ROYGBIV! These colors make up what we call "visible light". Light is energy, and the wavelength of the light determines how it affects the thing or person it touches. Red lights, for example, are often used to generate heat to warm your bathroom or food because red light in isolation produces warmth. On the flip side, electronic devices of today utilize highly concentrated blue light to illuminate their screens. Trends in the modern world and at-home entertainment mean we are exposed to this blue light on a daily basis and in large amounts.

 

WHAT MAKES BLUE LIGHT BAD, THOUGH?

Digital Blue Light is the culprit of eye strain, headaches, trouble sleeping and low energy. Regardless of the device, smartphones, tablets, and computers all give off this highly concentrated blue light.(1,2)

Our eyes are safe in most cases when exposed to pure white light, which is a mixture of every color in the visible spectrum. However, individual wavelengths of color can have negative health effects when produced in isolation due to increased intensity and concentration. The extent of those negative effects depends will depend on the duration of direct exposure. Blue light exposure from digital screens can result in various symptoms including eye strain, dry or tired eyes, headaches, and even disruption of the body's production of the sleep hormone, melatonin. Do you ever experience poor sleep or feel extra sleepy during the day? Your otherwise healthy sleep cycle could be getting disrupted by blue light.

In a Web MD publication, director of sleep medicine at Harvard Medical School, Charles Czeisler, PhD, MD was quoted saying, "The more research we do, the more evidence we have that excess artificial light at night can have a profound, deleterious effect on many aspects of human health. It is a growing public health concern."

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IS BLUE LIGHT AFFECTING ME?

Sadly, the answer is yes. You know the feeling after a long workday staring at a computer screen. You're doing that "tired eyes" thing where you shut your eyes tight and open them wide realizing how strained they are. They're dry and tired, and you might even feel a headache coming on. These symptoms are the tell-tale signs of blue light overexposure. Your family members may also be affected by blue light in the same way.

WHAT ABOUT MY CHILDREN AND GRANDCHILDREN?

In 2020, Dr. Marc DiSabella, a neurologist at Children’s National Hospital, saw an alarming spike in headaches amongst children as screen time as screen time went up. In a 2020 survey of CNH patients they found that "42% have a constant headache that never goes away, compared to 18% [last year]."(3)

Additionally, in a 2020 interview, Dr. Kim Le, Pediatric Ophthalmologist at Henry Ford Health System, was quoted when speaking with WXYZ Detroit that increased screen time takes a toll on kids. “They’re complaining that they’re blinking a lot...their eyes are tired,” Le said. “Headaches as well.”(4)

Watch the video below to find out more about how blue light specifically affects children. 

 

DOES BLUE LIGHT AFFECT MY SLEEP?

Watching TV, surfing the internet, or using social media close to bed time exposes you to a large amount of blue light, which greatly disrupts your natural sleep cycles by suppressing the sleep hormone called Melatonin.

The American Optometric Association states that, "[device] use before bedtime can delay sleep onset, degrade sleep quality and impair alertness the following day."(1)

This degradation of sleep quality can quickly and easily become chronic and accepted as the norm. Start effectively blocking blue light in the evening and  

HOW CAN I PROTECT MYSELF FROM THE EFFECTS OF BLUE LIGHT?

Short of limiting your screen time, there are a variety of products that block blue light and provide safer screen time. The bad part about these products is that you'll need to buy different filters for different devices, and your wallet may empty out before you're able to get them all. That's where CoolBlue Optics comes in. We offer the most advanced and affordable Blue-Blocking technology. 

With only one low-cost purchase, you can reduce the harmful effects of blue light, and get some peace of mind that your screen time is more healthy. One pair of CoolBlue Optics eyewear can be used in front of any screen - the computer, tablet, phone, TV, you name it!

 

HOW DO COOLBLUE OPTICS BLOCK BLUE LIGHT?

Blue light has a wavelength of 380nm-500nm, with the range of 380nm-450nm being the most harmful to our eyes. 

CoolBlue Optics eyewear utilizes UV400 lenses with a special coating that blocks about 50% of ALL blue light, and the majority of the harmful spectrum (380nm-450nm) of blue light.

Read more here about our lab test data on blue light transmittance through our lenses.

 

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WHERE CAN I LEARN MORE ABOUT BLUE LIGHT?

Don't take our word for it, click the links below to hear directly from doctors and researchers on the effects of digital blue light.

References

 

1. https://www.aoa.org/AOA/Documents/About%20the%20AOA/Get%20Involved/Blue%20Light%20Impact%20in%20Children.pdf
2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6288536/
3. https://riseandshine.childrensnational.org/headaches-and-online-learning/
4. https://www.wxyz.com/rebound/keeping-you-safe/virtual-learning-can-cause-eye-strain-on-children-heres-how-to-limit-it

 

 

Other Links

Zhao, C.Z., Zhou, Y., Tan, G., & Li, J. 2018. Research progress about the effect and prevention of blue light on eyes. International Journal of Opthalmology. 

Nakamura M, Kuse Y, Tsuruma K, Shimazawa M, Hara H. The involvement of the oxidative stress in murine blue LED light-induced retinal damage model. Biol Pharm Bull.

Harvard Health Publishing, 2012. Blue light has a dark side. Harvard Health Letter, Harvard Medical School. 

American Optometric Association. Blue Light Impact in Children. Infant & Children’s Vision.

Prevent Blindness.Org - Blue Light and Your Eyes