There are so many different brands of blue light blocking glasses to choose from but how do we know which are the best? There are so many brands out there that buy their glasses in bulk from factories in China with no regards to what frequencies of light they should be blocking or filtering.
Many companies also mislabel their products calling computer glasses blue blockers, which only confuses people more when they try to make the best decision for their health.
The short article will talk you through what to look for and watch out for when looking to buy a pair of blue light glasses.
Computer Glasses vs Blue Light Blocking Glasses
Firstly, let’s get this straight up out there, clear glasses (glasses with clear lenses) do not block blue light. They are not blue blockers, period. To block blue light, you need a coloured lens, typically amber or red. Computer glasses, with clear lenses are not going to help you sleep, this is fact.
Today, many companies are trying to jump on the eCommerce bandwagon and trend of blue light and sell you computer glasses as blue blocker glasses. We have seen companies such as Quay Sunglasses, Gunnar Glasses, Costco Computers, Felix Gray, MVMT and Warby parker blue light glasses advertise their computer glasses as blue blockers. They also suggest that their glasses will improve sleep, whilst the science in peer reviewed academic literature tells us otherwise.
Don’t get me wrong, there is always a place for computer glasses or clear glasses that block blue light, but one of their attributes is not blocking blue light or helping you sleep.
Computer Glasses Buying Guide
Computer glasses, aka clear glasses, aka anti glare glasses and definitely not aka blue blockers are taking the world by storm. These glasses filter (not block) blue light during the day. They are used for someone that does not have a sensitively to blue light but works in an office all day under artificial light. The light can be from office lighting, computers, smart phones and personal computers. These devices have a lot of blue light present in them which causes damage to the cells in our eyes. Ever get dry, sore or itchy eyes after using your computer? Well that is called digital eyestrain and is caused by too much blue light damaging our eye's cells during the day and not enough restorative red light repairing the damage.
Take a look below of where the blue light is found in LED back lit devices and office lighting.
The best computer glasses will focus on reducing the blue light spike found in LEDs, most computer glasses companies focus on reducing blue/violet light from 380-420nm. Most of the big brands focus on this. You can see why focussing on blue/violet light (between 380-420nm) is an issue right? Its not present in LEDs, so they aren’t blocking any artificial light… hmmmm!
When looking for a pair of anti fatigue glasses or computer glasses one must ensure they are filtering down light in the blue range from at least 430-495nm. If they aren’t then they aren’t doing jack for your eye health.
There is also a horrible scam out there you must avoid when looking for the best computer glasses. Some companies like Cyrux include a pen with their glasses that supposedly emits blue light and shining it on a test strip through their clear glasses shows it blocks blue light. But guess what, we tested the spectral emissions of this pen and it only emits violet light at 380nm, a frequency of light not present in LEDs! Just because some lovely lady is wearing cute glasses that claim to block blue light, doesn’t mean they work, do your due diligence!
Check List for Buying the Best Computer Glasses
- Ensure they filter blue light between 430-495nm. Ask for a spectral test report to prove this from the company you choose
- Avoid computer glasses that have the light pen gimmick, they are useless
- Ensure they are made under laboratory conditions, not a factory in China
- Avoid clear glasses that focus on violet light
Blue Light Blocking Glasses Buyers Guide
What are the best blue light glasses? The best blue light blocking glasses (blueblockers) are those that block 100% of blue light right? Well its semi right. Peer reviewed evidence clearly states that the best blue light blocking glasses must block 100% of the light that falls between 400-550nm. This is all blue light and most green light. In our blog post where we revealed the spectrum test results of major brands of blue light blocking glasses zero of them even blocked all blue light let alone green light.
Typically, a good blueblocker will be red glasses, glasses with red lenses that completely eradicate blue/green light between 400-550nm. If they do not achieve this then save your money as you want be optimising your light hygiene post sunset and be leaving quality sleep on the table. Also, if your blue light glasses block more than 550nm then according to Jack Kruse you could also be affecting your health. Brands like Carbonshade and True Dark focus on trying to block too much light which according to Jack Kruse, a respected Neurosurgeon, can have negative consequences for long term mitochondrial health.
Finding the balance is key, less than 550nm blocked is bad but also blocking too much green post 550nm can also be bad. Glasses that block blue light are becoming more common but make sure before you commit to a pair that the science behind their claims backs up.
Check List for Buying the Best Blue Light Blocking Glasses
- Ensure both blue and green light between 400-550nm is blocked. Ensure claims are backed up with an independent spectral analysis report
- More is not always better. Brands that focus on blocking post 550nm could be damaging your health according to Dr. Jack Kruse. This and you also want to able to see anything much when wearing them.
- Ensure the lenses are made in a laboratory to ensure best clarity and quality. Avoid Chinese made lenses due to inconsistencies.
Yellow Tinted Glasses
But wait, there’s another option? Just when you thought you had yourself covered we throw in another curve ball! Yellow tinted glasses or as they are sometimes referred to light sensitivity glasses, are another form of day time blue light glasses. If you have a sensitivity to artificial blue light you will suffer from issues such as Seasonal Affective Disorder (S.A.D), stress, anxiety, depression, migraines, constant headaches, dizziness and fatigue. In order to manage these conditions, you need to reduce more blue light than what regular computer glasses would do. This is why yellow tinted glasses are now gaining popularity. They provide people with light sensitivity issues and serious biohackers that chance to manage artificial light optimally. They do everything the best computer glasses do and more. Some, like BLUblox SummerGlo lenses even have infused colour therapy in their lenses to help improve mood.
Yellow Tinted Glasses Buying Guide
- Ensure the lower end of the blue spectrum is blocked, 100% between 400-450nm is best. This leaves 451-495nm blue in place to ensure optimal hormones during the day
- Ensure yellow lenses are made in labs, not in China
- Ask for a spectrum report from the company you are buying your glasses from.
Be careful when buying blue light glasses or computer glasses. A lot of companies just want your money. No one company is bad but as long as they can produce the science to back up what they are saying and it aligns with what we have published in this article then you are good to go. This article is not intended to persuade you to buy BLUblox glasses, it is simply an article of what to look for when you opt to upgrade your light and health through buying a good quality set of blue light glasses.
A great independent review of the best blue light blocking glasses can be found here
Thanks for reading.....