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Latest Vision News

Block the Blue Light

The truth is, blue light isn’t all bad. It shouldn’t be blocked at all times. It can help memory, boost alertness, and elevate your mood! Still, the eye cannot take blue light all day long and it can easily contribute to eye strain especially when it is coming from computer screens and tablets and cellphones.

These days, we’re working, learning, and relaxing in front of screens emitting blue light all throughout the day—and night. Even your average indoor lightbulb can give off blue light.

You’re probably wondering. Okay, but what is blue light anyway?

Blue light is the highest energy visible light on the UV spectrum, and before the advent of technology, the sun was our only significant source of blue light. Problems arise, however, with the amount of blue light to which we are exposing our brains and bodies, potentially causing undue stress to our eyes and even making it hard to sleep at night.

There are a few ways to avoid this strain. First, let us introduce you to one of the best options on the list: blue light blocking lenses.

What are blue light blocking lenses?

Good question. Glasses equipped with lenses with blue light protection are a simple solution to combat the symptoms caused by increased screen time. The technology in these lenses has a subtle tint that softens harsh blue light rays as they pass through, reducing the amount of blue light to which the wearer’s eyes are exposed. They aren’t heavy or thick and can be made without a prescription attached to them. They can be made to fit adults, teens and children and are safe for all to wear. All blue light blocking glasses aren’t made the same. They can be made to block a certain percentage of blue light. How much you decide to block, well, that is up to you. Give our practice a call and we will gladly talk you through your options!

What else can I do to block blue light?

While you won’t be able to block it without the correct lens as your shield, you can still manage it.

When working at a computer, for example, you’re often looking up and down, from screen to paper, and your eyes are moving around and refocusing time after time. This is where the 20-20-20 rule can come into play. For every 20 minutes you’re in front of a screen, turn your head and look at something at least 20 feet away for 20 seconds. Just, give your eyes a break.

Another option: simply lower the brightness. The display settings for your screen on your phone or computer allow you to adjust the amount of light seeping from the screen. If your screen looks like a light source, lower the brightness. If your screen looks dull and a bit too dark, it’s okay and probably for the best to brighten it up. A dull screen can also strain your eyes.

Bottom line, protect your eyes the best way you can and remember that we are here to help! Looking to get a pair of blue light protection glasses that fit your lifestyle and your budget? Here at Infinity Eye Care, we can customize any style of frame and lens prescription with blue light-blocking technology.

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Dry Eye Disease affects more than 5 million people in the United States, with 3.3 million being women and most of those being age 50 or over. And as people live longer, dry eye will continue to be a growing problem.

Although treatment options for dry eyes have improved recently, one of the most effective treatments is avoidance of dry eye triggers.

For some that might mean protecting your eyes from environmental triggers. To do that experts recommend using a humidifier in your home, especially if you have forced hot-air heat; wearing sunglasses when outside to help protect your eyes from the sun and wind that may make your tears evaporate faster; or being sure to direct any fans  - such as the air vents in your car - from blowing directly on your face. For others, it may mean avoiding medications that can cause dry eyes.

There is one other trigger that may need to be avoided that doesn’t get as much notice: The potentially harmful ingredients in cosmetics.

Cosmetics do not need to prove that they are “safe and effective” like drugs do. The FDA states that cosmetics are supposed to be tested for safety but there is no requirement that companies share their safety data with the FDA. There are also no specific definition requirements for labeling cosmetics as “hypoallergenic,” “dermatologist tested,” “ophthalmologist tested,” “sensitive formula” or the like, making most of those labels more marketing than science.

Things to watch out for in your cosmetics if you have dry eye include:

Preservatives Preservatives are important to prevent the cosmetics from becoming contaminated but many are known to exacerbate dry eye. Common preservatives in cosmetics that could be adding to your dry eye problems (Periman and O’Dell, Ophthalmology Management August 2016) are: BAK (Benzalkonium chloride); Formaldehyde-donating (yes, Formaldehyde!) preservatives (often listed as DMDM-hydantoin, quaternium-15, imidazolidinyl urea, diazolidinyl urea and 2-bromo-2-nitropropane-1,3-diol); parabens; and Phenoxyethanol.  All of these preservatives in sufficient quantities can cause ocular irritation or inhibit the function of the Meibomian Glands that produce mucous that coats your tear film and keeps it from evaporating too quickly.

Alcohol Alcohol is used in cosmetics mostly to speed the drying time but the alcohol can also dry the surface of the eye.

Waxes Waxes can block the opening of the Meibomian Glands along the eyelid margin. If these glands are blocked they will not be able to supply the mucous and lipids necessary to the tear film to prevent it from drying too quickly. If you have trouble with dry eye it would be advisable not to apply eye liner behind the eyelashes along the lid edge where the Meibomian gland openings are.

Anti-aging products While these may be safe and effective for the skin of the face they should not be used around the eyes. Most of these products contain some form of Retin A. These products have been shown to be toxic to the Meibomian glands and could be contributing to your dry eyes.

These components of cosmetics do not adversely affect everyone. However, if you suffer from dry eye and are not effectively able to keep your eye comfortable and your vision clear, you should investigate your cosmetics as a potential contributor to your problem.

Article contributed by Dr. Brian Wnorowski, M.D.

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