How To Test Blue Light Glasses - Part 2

If you have not read part 1 then you should read that article first. You can do that by clicking here.


Following on from my initial article on how to test blue light glasses several common questions came up from our amazing readers that I felt needed addressing in a part 2 special.


Even from my last blog on how to test blue light glasses it appears that there is still a lot of misinformation and lack of understanding on why we need our blue light glasses to filter specific frequencies. There is also a lot of confusion over lens colours and which blue light glasses are required for different points during the day. Not all blue light glasses are created equal and you can try some of the at home tests to determine whether you are blocking blue light correctly for the lenses you have purchased.


Testing blue light glasses is more necessary now than ever before as many brands have cheap prices but their blue light glasses at worst do not block any blue light and at best block the wrong frequencies of blue light.


Below I will address some of the common questions that came about from my blog on how to test blue light glasses. This way you will be empowered with the knowledge to optimise your health for the better and manage blue light correctly.


What Blue Light Glasses Do I Need?


This question is a common one as when testing blue light glasses, we first need to understand why there are different types of lenses that manage blue light.


Daytime – Clear Lenses


During the daytime it is paramount to NOT block blue light. Blue light is essential during the day. What colour is the sky? Blue! During the day when we are working in an office under artificial blue light or using our digital devices and computers we are bombarding our eyes with excessive HEV blue light. This blue light, which in part is essential to being alert during the day, can cause cellular damage in the eyes which can lead to digital eyestrain.


To manage this one needs to filter blue light, not block blue light. Filtering blue light can be done using a clear lens with a blue light filter added. To test this are your clear glasses reflecting blue light when you shine artificial blue light onto them? If the colour reflected is green or a deep purple you are not wearing the best blue light glasses. The best blue light glasses will reflect blue light and the colour of the reflection will be blue.


Using the test strip or colour circles test on clear lens computer glasses will not work, they do not and are not meant to block blue light.


Night Time – Deep Orange/Red Lenses


After sunset you must block 100% of blue light and also most green light. The range of light you need to block is 100% between 400-550nm. This is all blue light and almost all green light.

The biggest misconception with people is that they can wear clear computer glasses to block all blue light and sleep better. This is a massive mistruth and is discrediting the blue light blocking glasses industry. A clear lens cannot block 100% of sleep destroying blue and green light between 400-550nm, FACT!


Companies use marketing tactics saying “no more ugly red or orange lenses, use our clear lenses instead”. You could use them, but when you test these blue light glasses they will not be blocking blue light and WILL NOT improve your sleep.


Remember, RED MAKES YOU GO TO BED. Red lenses such as Sleep+ from BLUblox are the optimal option and the best blue light glasses in Australia and in the world.


But, Wont Everything I See Be Red?


When you wear your BLUblox Sleep+ glasses after sunset and block 100% of blue light and most green light colours will change. If you block a colour you won’t see it and that is true for blue light. The best blue light glasses will not turn everything red. In fact, it creates a soothing hue that helps relax you ready for bed. When you wear the best blue light glasses that are Australian made (Sleep+) then you see blue as black and greens as lighter greens. The best blue light glasses WILL change colours, but not make everything turn red. You know when you do not have the best blue light glasses as their lenses will make everything appear red or you will be able to see blue light which renders them useless.



I Have a Blue Light Emitting Pen that shows BLUblox Computer Glasses Do Not Block Blue Light.


This is also a common question when testing blue light glasses. I covered the blue light pen test in the last blog but I will cover it again. The little blue pen that came with your $29.99 mass produced “computer glasses” does not emit blue light! Do not believe me then watch this YouTube video where I spectrum test this very pen here. The pen emits a very narrow band of purple light, which is unsurprisingly the exact narrow band of purple light the glasses you have just purchased block. Remember, you need to filter blue light during the day when using the best computer glasses, not purple light. Purple light is not the issue when it comes to preventing digital eyestrain, it’s very clearly an issue with blue light!


So why does the blue light pen test not work on BLUblox Computer Glasses? The reason is these computer glasses, the best computer glasses, filter blue light, not the purple light emitted from a gimmicking pen. We are actually focussed on helping people, not taking their money.


I Can Still See Green Light Through BLUblox Sleep+ Lenses.


That is correct and means they are working correctly. Many people wrongly assume that you must block 100% of both blue and green light after sunset for optimal sleep. This is incorrect and has been shown in studies not to be the case.


For optimal sleep you must block 100% of blue light, that is a given. You then must block 100% of the green light found between 500-550nm as well. Green light runs from 500-570nm. The green light found between 551-570nm does not impact melatonin levels to the same extent than lower green light. Therefore, its best to leave that light present as not to ruin your vision experience post sunset. The reason you can see some green light wearing the best blue light glasses from BLUblox is that we do not block all green light, we block all light between 400-550nm which is 100% of blue light and most green light.


Can I Wear Sleep+ Glasses During The Day?


Another question that seems to frequently arise is can one wear the best blue light glasses, Sleep+, during the day. When testing blue light glasses we know that we must only filter blue light during the day and block it after sunset. Our light needs change from day to night so you cannot simply have one pair of blue light glasses. In order to have the best blue light glasses you must have two pairs, one that filters blue light during the day (computer glasses) and one that blocks 100% of blue light after sunset (blue light blocking glasses). If you wore the best blue light blocking glasses from BLUblox during your biological day you may actually cause circadian disruption, which is the very thing you are trying to improve by wearing blue light glasses in the first place.


Final Thoughts


In the ocean of misinformation on blue light glasses we want to ensure everyone has access to the facts, not a marketing plan to get you to part with your money. Check out some of our earlier blogs on our website where we delve into the peer reviewed academic literature on this subject. So, how to test blue light glasses may have seemed easy from my first article but given the years of poorly constructed information on blue light many people have been subjected to it appears a second instalment on how to test blue light glasses was essential.


Check out our number 1 video on YouTube about how to test blue light glasses!


To get the best blue light glasses and the best computer glasses check out the below link by clicking on the photo.









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