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Saint Johns, FL 32259

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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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Update on COVID-19 (03/30/2020)

We wanted to thank you for your continued support of our office during this challenging time. We will continue to be open from 9:00am-1:00pm Monday through Friday to dispense contact lens and eyeglasses orders. We will also be able to order additional contact lenses for patients who may be running low.

While all routine eye care is still deferred during this time, we will remain available to triage eye emergencies. We will send out additional notifications as soon as it becomes possible to resume routine eyecare.

Please call or text us at (904)287-4567 or email us at cfec2@2drfishers.com with any questions for concerns.

*****CONTACT WEARERS*****

With the day to day changes surrounding COVID-19, we do not know how much longer we will be open to the public. With that being said, if you are a contact lens wearer, and currently have less than a 3 month supply of lenses, we highly recommend that you place an order now. We will offer free shipping on lenses directly to your home (with a minimum of 2 boxes). We will also extend contact lenses prescriptions, as needed, for those expiring within the next three months.

Please call or text us at (904)287-4567 or email us at cfec2@2drfishers.com.

Hours: As of March 30, we will be open from 9:00am – 1:00pm Monday through Friday only to dispense contact lens and eyeglass orders. We will have a doctor available to see ocular emergencies if needed.

Routine Eye Exams: If you are scheduled for a routine eye examination appointment during our closure, we will reschedule your appointment. As of March 30, 2020, we will begin rescheduling routine eye examination appointments for April 13th and later.

I need to replace my glasses. What do I do? Please contact us at (904)287-4567. We may be able to extend your prescription during this time and will help you with your eyewear needs.

I’m nearly out of contact lenses. What do I do? Please contact us at (904)287-4567. We may be able to extend your prescription during this time, and/or place an order for your contact lenses and have them shipped to your house (with a minimum of 2 boxes).

I need a refill on the medication prescribed to me by the practice. What do I do? Please contact us at (904)287-4567 or cfec2@2drfishers.com. We can transmit a refill for your prescription directly to your pharmacy so that you have the medication that you need.

I need to pick up my order. What do I do? We will be open from 9:00am – 1:00pm Monday through Friday only to dispense contact lens and eyeglass orders.

I don’t feel comfortable coming into the office to pick up my order. What do I do? Please contact us at (904)287-4567 and we can bring your contact lens or glasses order out to your car. Since we are working with reduced staff, please allow us extra time for curbside pick-up. Also, when you place your contact lens order, you can elect to have them shipped to your home.

What about an eye emergency after your shortened business hours? What can I do? If you have an ocular emergency, please call (904)287-4567 and wait for instructions at the end of the message.

Our doctors will do their best to accommodate your needs whenever possible during this time. We have reduced our staff hours until further notice to protect them, our patients, our community, and our nation. Despite the financial and emotional hardships this will cause, we ask every one of you to do the same.

Together, we will weather this storm.