If you have been researching into blue light, then you may be aware of the stark evidence associated with blue light exposure and sleep disruption. One way to minimize your blue light exposure is by means of an anti blue light screen. But how do blue light screen protectors work? More importantly, are they worth the investment? Let’s find out!
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How do blue light screen protectors work?
Blue light screen protectors have a special coating which is applied to the device screen. They work by filtering out harmful blue light through filters to minimize the amount of blue light that the user is exposed to through their device. While anti blue light screen protectors offer the user protection from the device, it does not protect the user from any other sources of blue light. There are other blue light blocking devices, such as blue light glasses, which work in a similar manner but reduce exposure to blue light that the user sees.
Blue light is associated with causing digital eye strain and interrupting your sleep patterns. Source
It’s clear that blue light screen protectors do have a value, and they can be extremely useful for the majority of people, including those who spend time on their device before bed. Read on to Learn about some common FAQs and find out if you would be better off with a blue light screen protector or a blue light filter app.
Do anti blue light screen protectors change color?
Some blue light blocking screens have a yellow tint which changes the color of screen. Tinted screen protectors tend to offer more protection against blue light than clear blue light screen protectors.
Tinted blue light protection tends to be more evident in blue light glasses than screen protectors.
But this comes with the cost of a screen with discoloration. However, there are other non-tinted products which offer a clear screen protector so that the user does not have a distorted color on their screen.
The level of protection provided against blue light can vary depending on the level of tint. For instance, blue light glasses generally offer the below levels of blue light protection.
| Type of lens | Level of blue light filtration |
| Clear lens | 5- 30% |
| Yellow lens | Approximately 50% |
| Orange/amber/red lens | Up to 100% |
How do blue light filter apps work?
Apps designed to reduce the amount of blue light emitted work by adjusting the color tone of the screen to warmer colors, such as yellow color red or orange. This in turn reduces the amount of blue light emitted.
However, it does not block the blue light being radiated from the screen.
Some phones and devices, such as the iPhones, come equipped with a blue light filter. In the iPhone, the blue light filter is called Night Shift.
This works in a similar way to apps whereby it alters the screen temperature of your device to a warmer color.
Computers which have Windows 10 installed have a night light function which helps to filter out blue light.
It can be scheduled to automatically turn on and off at certain times to the day.
Tip: If your device already has a blue light filter installed, this may be sufficient at reducing the levels of blue light without having to invest in an app or a screen filter.
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Do blue light screen protectors really work?
There are plenty of anecdotal reports suggesting that filtering the blue light from your screen offers multiple benefits. Advantages reported by users of blue light filters include reduced eye irritation, reduced headaches and reduced eye fatigue.
However, the advantages claimed by these anecdotal reports currently shows mixed scientific results to support these theories.
That said, many Optometry and medical professionals are advocates for blue light screening products, such as Ocushield.
This product was even designed and backed by medical professionals.
Furthermore, it is registered as a class 1 medical device by the Medicines and Healthcare products Regulatory Agency (MHRA) in the UK.
Related: Pros And Cons Of Blue Light Screen Protector – Hidden Truth
Should I buy a blue light screen protector?
A blue light screen protector is a good investment if you want to reduce the amount of blue light that you are being exposed to. Blue light blocking screens are particularly useful for people who use devices close to bedtime and experience poor sleep or difficulty getting to sleep.
Anti-blue light screens are also a useful asset for people who experience headaches or eye strain from prolonged screen time.
If it is coupled with a blue light filter app, an anti-blue light screen protector can offer the ultimate level of protection from blue light.
However, if you alternate between multiple devices at night or you are in a room which is lit, a blue light screen protector will only protect you from that device.
If you require blue light protection from multiple devices, anti-blue light glasses may be a more suitable option.
I was personally so stunned by how much damage that blue light could cause to my precious eyes that I went researching for a blue light blocking filter and screen protector.
I have personally looked into the Ocushield screen protectors, and they seem like the most promising product on the market.
I also use the night light almost constantly when I’m on my laptop.
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Conclusion
Blue light screen protectors are an excellent asset to help minimize the amount of blue light that you are being exposed to.
While studies are inconclusive so far as to their effectiveness at preventing digital eye strain, anti-blue light blockers have been shown to minimize sleep disruption.
Would you invest in a blue light screen protector? Or would you be happy to just rely on a blue light filter app to minimize the blue light that you’re exposed to? Let me know in the comments below.