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Home » Your Eye Health » Computer Eyestrain » Blue Light/High-Energy Visible (HEV) Light and Your Eyes

Blue Light/High-Energy Visible (HEV) Light and Your Eyes

According to recent studies, 60% of people spend as much as 6 hours a day in front of a digital device whether it is a computer, tablet, smartphone or other gadget. All of these devices emit blue light or high-energy visible (HEV) light, which is a known cause of computer vision syndrome, sleep disruptions and possibly other potential dangers to the eyes. Blue light radiation is also emitted from television screens, electronic devices. fluorescent and LED lighting and yes, even the sun.

What is Blue Light?

Emitted from the sun, blue light is naturally occurring in the world around us. On the spectrum of visible light (light that humans can see), blue light has the highest energy and the shortest wavelength. It is also sometimes known as blue-violet or violet light, which is where ultraviolet (UV) light rays that are just beyond our perception get their name. Much like ultraviolet light, blue light has both dangers and benefits to our health, particularly to our eyes.

What are the Potential Dangers of Blue Light?

Research is still being done to determine the long-term effects of blue light or high-energy visible (HEV) light emission, however it is known is that blue light is a cause of computer vision syndrome (CVS) and sleep disruptions.

Eye Strain

The high energy and shorter wavelengths of blue or HEV light emit a less consistent flow of light, creating a glare or flickering that can cause eye strain. Because sharpness and visual contrast are affected by this, the eyes have to work harder to see clearly. After extended periods of time this can result in headaches, blurred vision, dry eyes, and mental and physical fatigue.

Sleep Disruptions

Natural blue light in the atmosphere is known to help regulate the body’s circadian rhythm (which controls your sleep cycles), to boost your mood and level of alertness and to improve memory and cognitive function. However, prolonged exposure to artificial sources of blue light has been shown to reverse these positive effects, causing disruptions in the circadian rhythm which affects sleep, as well as an increased risk of depression. Studies show that using a digital device before bedtime can negatively impact ther amount and quality of your sleep.

Macular Degeneration

Researchers at Harvard University have shown that over time, prolonged exposure to blue light can cause damage to the retina at the back of your eye, which may lead to age-related macular degeneration (AMD) and possibly other serious health and vision problems. AMD is a leading cause of vision loss and low vision.

How Can You Protect Yourself from Blue Light Emissions?

As the dangers of blue light from digital devices emerge, more and more options are becoming available to protect your eyes. The eyes have very limited natural ability to block out blue light radiation so we need to be aware of blue light exposure and how to minimize it.

Computer glasses with blue-blocking lenses, coatings and filters are a good solution for those working on a computer for long periods of time each day. You can also add anti-glare coatings with blue light protection to your regular eyeglass and sunglass lenses. Additionally, there are filters available for devices such as computers, smartphones and tablets, to reduce the amount of blue light radiation that can reach your eyes.

The easiest way to reduce blue light exposure is to take frequent breaks when working on a computer and to reduce screen time overall.

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To our valued patients,

At The Eye Doctors, Inc. the health and well-being of our patients is at the core of everything that we do. In light of the rapidly changing situation and the spread of COVID-19 we made the difficult decision to close the clinic on Tuesday, March 17 th.

At this time, the Wal-Mart Vision Center remains open limited hours for urgent glasses repairs, pick-ups of existing orders and new contact lens orders. The vision center is open every day from 10 AM to 2 PM and on Tuesdays from 6 AM to 2 PM, with the hour of 6 AM to 7 AM reserved for senior citizens.

If you are experiencing an eye emergency, please call 952-955-4427 to leave a message for one of the doctors. Messages will be checked Monday through Saturday from 9 AM to 5 PM.

We are monitoring the situation closely and will re-open when it is safe to do so. We look forward to seeing you when things improve and thank you for your continued support of our practice. Please continue to our website for further information.

Dr. Melissa Viker & Dr. Britt Gustafson

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The Eye Doctors, Inc. COVID-19 Information:

Our clinic closed on March 17th and will remain closed until it is safe to re-open.  Please watch our website and Facebook page for updates.

Urgent or Emergent Eye Concerns

If you have an eye emergency, we are here to help.  Please call 952-955-4427 and one of the doctors will return your call.  The messages are monitored Monday through Saturday between 9 AM and 5 PM.  Eye emergencies include (but are not limited to): eye pain, a recent onset of redness in one or both eyes, flashes of light or sudden onset of new floaters, double vision, and sudden change/worsening of vision in one or both eyes.

Glasses and Contact Lens Orders:

The Wal-Mart Vision Center is open daily at this time from 10 AM to 2 PM and 6 AM to 2 PM on Tuesdays for limited services. The hour of 6 AM to 7 AM on Tuesdays is reserved for senior citizens.  One optician is on duty to provide urgent glasses repairs and adjustments; at this time no new orders for glasses are being accepted. Existing orders of contact lenses and glasses may be picked up from the vision center.  New orders of contact lenses can be placed in store and will be shipped to your home if we do not have the lenses in stock. Additionally, you may order contact lenses at www.walmartcontacts.com

Contact Lens Safety

There is no evidence that contact lens wearers are at greater risk for a Corona Virus infection, per the American Optometric Association Cornea and Contact Lens Section.  Please follow the below tips:

  • Wash and dry your hands thoroughly before handling contact lenses
  • Avoid using contact lenses if you are ill with any cold or flu-like symptoms
  • Reduce your risk for infection by avoiding sleeping, napping, swimming or showering in contact lenses
  • Replace your contact lens case every 2 months
  • Use fresh contact lens solution each time you store your lenses
  • Do not reuse single-use/daily disposable lenses