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6 Facts About Blue Light & How It Affects Your Eyes

Ever think about light and what it’s made of? All types of visible light, be it from your computer screen, ceiling lamp or the sun, emit rays that have various effects. Most people are aware of the dangers of UV rays from sun exposure and the importance of sunscreen and sunglasses. But what many aren’t aware of is that light shines with a range of different coloured rays that have different amounts of energy, and some pose more of a threat than others. In this article, our Conroe eye doctor discusses blue light.

Basics of Blue Light

In brief, light rays have different wavelengths, and the longer the wavelength, the less energy it has. Conversely, the shorter the wavelength – the higher the amount of energy. Blue light is one of the shortest, highest energy wavelengths of visible light.

What else is essential to know about blue light? Here are six primary points:

  1. You can’t escape blue light; it’s everywhere.

The sun is the main source of natural blue light, but there are numerous artificial sources of blue light, such as LED and fluorescent light, flat-screen TVs, computer monitors, and the screens of all digital devices. While the amount of blue light emitted by these devices is small in comparison to what’s emitted by the sun, the amount of time people spend looking at these devices has raised a red flag for eye care professionals around the world. Eye doctors are concerned about the long-term effects of artificial blue light.

2. Blue light can endanger your future eye health.

Studies have shown that overexposure to blue light can damage retinal cells, leading to changes that increase your risk of developing age-related macular degeneration. Over time, macular degeneration can lead to vision loss.

3. Blue light glasses help your eyes block blue light.

While the human eye has some built-in protection against UV radiation reaching the retina at the back of your eyeball, it doesn’t block blue light well. Almost all visible blue light can pass smoothly through your cornea and lens, getting all the way to the retina. Blue light glasses offer an efficient way to prevent overexposure to this radiation. We offer specialty eyewear including blue light glasses at our Conroe optical shop; stop by anytime to learn more.

4. Blue light can cause digital eye strain.

Blue light cannot be focused as easily as other visible light, because it scatters more readily. When you gaze at a digital screen, you subject your eyes to a lot of unfocused visual “noise,” which reduces visual contrast, and can cause the uncomfortable symptoms of digital eye strain. Blue light glasses (with yellow-tinted lenses) can prevent this disruptive condition and enhance comfort when you’re using a computer or device for long periods.

5. Cataract surgery can increase the risk of blue light on your eyes.

When the natural lens of your eye is removed during cataract surgery, it will be replaced with an intraocular lens (IOL). For optimal eye health, this artificial lens should provide blue light protection. Be sure to discuss the type of IOL that your eye surgeon will use. After surgery, you may benefit from wearing blue light glasses crafted with a special filter in the lenses – especially if you spend a lot of time on the computer.

6. Blue light can also be good for you.

As we discuss all the ways to limit your exposure to blue light, our Conroe eye doctor points out that you also need blue light for good health! Scientific studies have shown it boosts moods, energizes your body, and helps with memory and cognitive function. It also plays a crucial role in regulating circadian rhythm, which is your wake-sleep cycle. On that note, while normal exposure to blue light during the daytime helps you to fall asleep at night, too much blue light late at night will prevent you from slipping peacefully into sleep.

Don’t let blue light disturb your visual comfort during the day or get in the way of a good night’s sleep! Visit our Conroe eye care centre to learn how blue light glasses can help.

At Eye Trends, we put your family’s needs first. Talk to us about how we can help you maintain healthy vision. Call us today: 936-206-7366 or book an appointment online to see one of our Conroe eye doctors.

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How Can You Prevent Blue Light from Causing Tired Eyes?

Ever wonder what blue light is, and why it’s gotten so much attention recently? Visible light is made up of different wavelengths, depending on color, and blue light has a short wavelength with high energy. While the sun is the primary source of blue light, other significant sources include digital screens, fluorescents, LED lights, and flat screen LCD televisions. Overexposure to blue light is associated with symptoms such as eye strain. When emitted by digital devices, it is particularly problematic because of the close proximity of screens to your eyes – and the long periods spent staring at them. Consequently, many people experience tired eyes and the uncomfortable symptoms of what is often called “computer vision syndrome.”

Our eye doctors in Conroe, The Woodlands, Spring, Greenspoint, Kingwood, and Houston, Texas, explain how blue light affects your eyes and share tips on how to protect your vision.

Effects of Blue Light

Almost all blue light you’re exposed to passes through your cornea and lens, reaching the retina and possibly aging the eyes prematurely, over time. Short term exposure to blue light, such as from digital screens mentioned above, can also lead to computer vision syndrome – often experienced as tired eyes, eye irritation, and difficulty focusing.

How to Protect Your Peepers

Decreasing your exposure to blue light is the ticket to keeping your eyes safe from computer vision syndrome. Here’s how:

  • Use matte screen filters to block blue light and decrease contrast
  • Limit screen time and take breaks
  • Wear computer glasses with blue light blocking lenses
  • Fit eyeglasses with anti-reflective lenses to reduce glare

Consult Our Eye Doctor

Blue light surrounds us, and even more so nowadays as Covid-19 has kept people homebound, connected to computers constantly. Talk to one of our optometrists near you about different ways to protect your tired eyes and your children’s eyes from computer vision syndrome.

At Eye Trends, we put your family’s needs first. Talk to us about how we can help you maintain healthy vision. Call us today: 936-206-7366 or book an appointment online to see one of our Conroe eye doctors.

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How much digital screen time is OK for kids?

Tips for avoiding computer vision syndrome

Kids and their smartphones go hand in hand, rarely to be separated nowadays. It’s typical to find children of all ages hiding under their covers at night with Alto’s Adventure, or texting instead of studying for tomorrow’s test. Ever wonder what all this digital screen time is doing to their vision? While totally banishing all screen time from your child’s day is unrealistic, eye care professionals recommend setting limits to keep eyes healthy. How much screen time is advised?

Our kids’ eye care specialists in Conroe, Texas, explain about the hazards of spending too many minutes each day gazing at a digital screen, and how it can lead to computer vision syndrome.

Why is it unhealthy to look at digital screens?

Blue light is emitted by the digital screens of computers and all mobile devices. Over time, this type of shorter-wavelength, higher-energy visible light may be dangerous for your retina. Blue light has been linked to the development of certain eye diseases in the future, such as cataracts and macular degeneration.

Blue light is also emitted by the sun and is integral for regulating your body’s sleep-wake cycle. However, by adding hours of daily blue light exposure from digital tech (especially at the wrong times of day – such as late at night), it can disrupt a person’s normal rhythms. For kids, the resulting daytime drowsiness can lead to poor school performance, and an unregulated sleep schedule can lead to weight gain and health problems associated with obesity. Also, research has shown that people who don’t have a healthy pattern of activity and sleep are more likely to suffer from depression, lower levels of happiness, feelings of loneliness, and overall mood disorders.

Teens who spend excessive amounts of time using digital screens have also been found to be at a higher risk of developing symptoms of ADHD, according to a scientific study conducted in Los Angeles high schools.

How much time does your child spend using digital screens?

According to statistics compiled by Common Sense Media (a nonprofit dedicated to promoting safe technology and media for kids), the average young child in the U.S. spends the following amount of time using digital gadgets each day:

  • Children under 2 years old: 42 minutes
  • Children between 2 to 4 years old: 2.5 hours
  • Children between 5 to 8 years old: almost 3 hours

What problems can be caused by too much digital screen time?

These daily amounts are associated with a rise in kids experiencing the painful symptoms of computer vision syndrome. According to the Vision Council, 30% of parents attest that their kids suffer from the following symptoms:

  • Neck/shoulder pain
  • Headaches,
  • Dry or irritated eyes
  • Reduced attention span
  • Behavioral problems
  • Irritability

In addition to the discomfort of the above symptoms, all of them can also have a significant effect on your child’s social interactions and academic development.

Additionally, the progression of nearsightedness (myopia) has also been associated with computer vision syndrome and overexposure to electronic screens. Unbelievably, approximately half of all young adults are now nearsighted, in contrast to only 25% in the 1970s!

What’s the best way to prevent computer vision syndrome?

Limiting digital screen time for kids is an effective way to minimize blue light exposure, the risks of computer vision syndrome, and our child’s chances of developing eye health problems in the future. Institute a “no-screens” rule in your home that begins about an hour or two before bedtime. Or enforce a time limit on your child’s phone use; many time management apps are available to help with this mission.

If your kid wears prescription glasses, another effective way to block blue light is by purchasing eyeglasses with blue-light protection from our Conroe, Texas, kids’ eye care collection. Several lens manufacturers produce lenses for glasses that filter out blue light. An anti-reflective blue light-blocking coating can also be applied to lenses.

If your child doesn’t need prescription eyewear, then we recommend investing in a protective blue light filter to apply to the surface of all digital screens. Many options are available, in addition to various blue-light filtering apps that you can download.

Book annual kids’ eye exams to keep watch on eye health and vision

Regular kids’ eye exams are the most dependable way to monitor your child’s ocular condition for any signs of a problem. During your appointment at Eye Trends, be sure to ask us for more information about the many ways to keep your child’s eyes safe from blue light.


At Eye Trends, we put your family’s needs first. Talk to us about how we can help you maintain healthy vision. Call us today: 936-206-7366 or book an appointment online to see one of our Conroe eye doctors.

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