The Ultimate 2019 Blue Blockers Buying Guide

Updated:


Today you’ll find out exactly:

How to buy the best blue light blocking glasses for 2019

And we mean the best for you!! Not for us. Nor for someone else… No, no! FOR YOU!

Best part:

You’ll find out about a hack. It’s already saved many people time and money.N

Because it helped people buy blue blockers that worked for them. On the first try!

blue light filter glasses - amazon review 1

blue light filter glasses - testimonial 0

blue light filter glasses - amazon review 2

blue light filter glasses - testimonial 1

Ready?

Let’s go:

 

Buy blue light blocking glasses in 3 simple steps

Step #1: Test your eyes’ blue light sensitivity

Step #2: Zoom-in* on blue blockers that match your sensitivity
* With JUST ONE click!!

Step #3: Decide based on non-blue-light preferences

Supplement – Facts about glasses that filter blue light:

What is blue light?
Why blue light affects some people more?
What are the best blue blockers?
Do blue light glasses work?
Do I need blue light blocking glasses?
What are blue blockers?
How do you know how much blue light glasses block?
Do yellow glasses block blue light?
Do blue light glasses have to be yellow?
Do computer glasses have a prescription?s

NOTE: This guide is for non-prescription glasses. If you need Blue light blocking prescription glasses click here.

 

Step #1: Test your blue light sensitivity

If you want a blue light filter glasses that will really work for you:

There is no way around testing them!

You have to put different blue blockers on and wear them for a while. Then you know if they work or not. And which ones work best.

Others (sellers, reviewers, doctors, scientists, experts, users, celebrities …) can tell you which blue blockers work:
– for them, or
– for many people, or
– maybe even for most people.

Now:

That doesn’t guarantee the same blue light glasses will also work for you!

Why?

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– Because your sensitivity to blue light is different.

– And likely also your lifestyle.

– And your problem with blue light.

[More on this below].

Bottom line:

Your blue light sensitivity is unique.

Taking advice on blue blockers from others without testing is risky.

 

Testing alternatives:

There are three ways to test your eyes for ideal blue blockers:

1 – Test by ordering and returning. Eventually, you might find glasses that really work for you.

But, if you are not lucky:
– the first (few) order(s) may not match your blue light sensitivity, and
– you may decide blue blockers don’t work…
…and miss out on the opportunity to fix your problem.

2 – Borrow blue blockers at a local low vision agency. You should also get qualified and personalized advice there. Consider it!

3 – Use the Blue blocker Test kit [Disclosure: We make & sell it].

Now:

We designed the Blue blocker Test kit to be the simplest and the most effective option.

Best part:

It works for all blue-light-related problems, and

– You can use it as glasses or over-glasses.

Bluelight filter test kit

 

The Blue blocker Test kit

The Tester includes a card-stock frame and 8 different blue light Filters. The Filters are very easy to change.

We chose the filters to tell you the most about:

– your blue light sensitivity, and
– any possible negative side-effects of different blue blockers available for sale.

 

Testing procedure: Try one Filter after another…

… easy, right?

But, if you want to be methodical: Follow these instructions.

TIP 1: Test while doing things you usually do. Particularly those that could be causing your problem.

TIP 2: Don’t jump to conclusions too quickly (to avoid the placebo effect).

 

Outcomes

When you are done testing you’ll either:

– Rule out Blue light as a cause of your problem. So, you can focus on other possible causes.

Or:

– Find that one of the kit Filters (let’s call it #X) works best for you. So, it’s time for Step 2.

 

Step #2: Identify matching blue light glasses. With one click! 🙂

It is as easy as clicking only once. (We’ve done all the hard work for you).

Further down, there is a list of all 8 kit Filters (from #0 to #7)

You will click on your favorite Filter number.

It will take you to Group #X of blue light glasses. These will all work for you like Filter #X.

Why?

Because they all match your blue light sensitivity. Like the Filter #X.

NOTE: In technical terms it is because all blue blockers in Group #X have spectral transmissions like your favorite Test kit Filter #X.

Now:

Spectral transmission is what defines the therapeutic effect of blue blockers.

That’s it for Step 2, but:

Before you click on your favorite filter number, check out Step 3. So you don’t have to come back:

 

Step #3: Decide based on non-blue-related preferences

Now you know that blue blockers in Group #X will work for you.

But:

You still have to choose between the blue blockers in that Group.

To make your final decision consider your preferences like:

– frame style
– different coatings
– price
– etc.

TIP 1: Find this info by clicking on the links in the Where to buy glasses online column (on the right).

TIP 2: We do recommend Anti Reflective coating (AR) to reduce the veiling glare problem.

 

Disclosure: some of the links below are commission links. If you use them and buy a product, we get a small commission at no extra cost to you. Thanks for your help!

 

Click on your favorite Filter’s number:

#0
#1
#2
#3
#4
#5
#6
#7

 

Group #0 – like Filter #0
Migraine relief & Sleep glasses *

* Most of these sell as Migraine relief or Sleep glasses.

Now:

They’ll work for you like Filter #0. Even if your problem is NOT migraines or insomnia.

Blue light filter glasses
(click to open spectrogram)
% blocked at wavelengths (nm) Where to buy glasses online
400 425 450 480 520 570
SomniLight Migraine Relief Glasses 100 100 100 100 100 100 SomniLight
Tester Filter #0 – cutoff: 580nm 100 100 100 100 100 100 GLARminY, Amazon
Carbonshade Sleep Glasses ** 100 100 100 100 100 100 Carbonshade
NoIR 570 – GlareShield 39% Dark Red/Orange 100 100 100 100 100 90 NoIR, Amazon
** Spectral transmission data from vendor’s website

 

Group #1 – like Filter #1
Sleep & Computer gaming glasses *

* Most of these sell as Sleep glasses or Computer gaming glasses.

Now:

They’ll work for you like Filter #1. Even if your problem is NOT insomnia or computer vision syndrome.

Blue light filter glasses
(click to open spectrogram)
% blocked at wavelengths (nm) Where to buy glasses online
400 425 450 480 520 570
NoIR 553 – GlareShield 52% Red/Orange 100 100 100 100 100 70 NoIR, Amazon
SomniLight Amber Sleep Glasses 100 100 100 100 100 100 SomniLight
Tester Filter 1# – cutoff: 525nm 100 100 100 100 100 65 GLARminY, Amazon
3M 2846 Red-Orange safety glasses 100 100 100 100 100 55 Amazon, RapidOnline
LowBlueLights Sleep & Computer Glasses 100 100 100 100 100 20 LowBlueLights
NoIR #60 UVShield 49% Orange lens 100 100 100 100 100 20 NoIR, Amazon
UVEX SCT Orange Computer glasses 100 100 100 100 100 15 Amazon
NoIR 505 – GLARESHIELD 56% Orange 100 100 100 100 95 60 NoIR, Amazon
Spectra 479 Amber Glasses for Sleep 100 100 100 100 95 40 Spectra479, Amazon
Melatonin Shades Evening Eyewear 100 100 100 100 95 30 Melatonin Shades, Amazon
BlueBlockGlasses 100 100 100 100 95 25 BlueBlockGlasses
NoIR 533 – GlareShield 35% Amber/Orange 100 90 95 95 90 70 NoIR, Amazon
Mojo BluBlock Sun Brown 60 90 90 95 95 90 60 ReadingGlassesETC
NoIR 68 UVShield 52% Light Orange 100 90 90 95 90 10 NoIR, Amazon

 

Group #2 – like Filter #2
Sleep & Computer Gaming glasses *

* Most of these sell as glasses for computer or sleep glasses.

Now:

They’ll work for you like Filter #2. Even if your problem is NOT insomnia or computer eye strain.

Blue light filter glasses
(click to open spectrogram)
% blocked at wavelengths (nm) Where to buy glasses online
400 425 450 480 520 570
Tester Filter #2 – cutoff: 490nm 100 100 100 100 25 15 GLARminY, Amazon
Mojo BluBlock Therapy Orange 100 100 100 95 85 30 ReadingGlassesETC
Spektrum ProSPEK-99 Computer glasses 100 100 100 95 75 10 Spektrum, Amazon
NoIR 465 – GlareShield 70% Yellow 100 90 95 85 30 10 NoIR, Amazon
Mojo BluBlock Day Tan Melanin 95 90 85 80 65 30 ReadingGlassesETC

 

Group #3 – like Filter #3
Computer and Gaming glasses *

* Most of these sell as Computer Gaming glasses.

Now:

They’ll work for you like Filter #3. Even if your problem is NOT computer eye strain.

Blue light filter glasses
(click to open spectrogram)
% blocked at wavelengths (nm) Where to buy glasses online
400 425 450 480 520 570
Tester Filter #3 – cutoff: 460nm 100 100 100 80 15 10 GLARminY, Amazon
T’aime 97% Computer Glasses 100 100 100 75 20 10 Amazon
NoIR 50 – UVShield 54% Yellow 100 100 100 70 10 10 NoIR, Amazon
Mojo BluBlock Night Yellow 100 100 95 70 40 15 ReadingGlassesETC
NoIR 58 UVShield 58% Yellow 100 95 95 30 10 10 NoIR
Blue Aspis glasses for Computer 100 95 90 30 5 5 Blue Shark Optics
Mojo BluBlock Day Amber Melanin 95 90 80 60 40 25 ReadingGlassesETC
UVEX Amber lens Glasses 100 85 75 20 10 10 Amazon

 

Group #4 – like Filter #4
Migraine relief & Fluorescent light glasses *

* TheraSpecs sell as Migraine glasses, Fluorescent light glasses, headaches, eyestrain, etc.

Now:

The glasses below will work for you like Filter #4. Even if your problem is NOT migraines or fluorescent lighting.

Blue light filter glasses
(click to open spectrogram)
% blocked at wavelengths (nm) Where to buy glasses online
400 425 450 480 520 570
Mojo BluBlock Sun Brown 40 80 75 80 80 70 40 ReadingGlassesETC
TheraSpecs FL-41 indoor Migraine relief & anti-fluorescent Glasses 55 60 80 80 80 45 TheraSpecs, Amazon
Tester Filter #4 (TheraSpecs-like) 65 70 65 75 75 40 GLARminY, Amazon

 

Group #5 – like Filter #5
(Gunnars – like) Gaming Computer glasses *

* Gunnars glasses sell as computer and gaming.

Now:

The blue blockers below will work for you like Filter #5. Even if your problem is NOT computer eye strain.

Blue light filter glasses
(click to open spectrogram)
% blocked at wavelengths (nm) Where to buy glasses online
400 425 450 480 520 570
Tester Filter #5 (GUNNAR-like) 75 60 65 55 35 20 GLARminY, Amazon
Mojo BluBlock Day Brown 20 70 60 65 65 50 25 ReadingGlassesETC
Gunnar Amber BLPF 65 Computer Gaming glasses 100 70 55 25 15 5 Gunnar, Amazon
Spektrum ProSPEK-50 Computer glasses 100 80 45 20 10 5 Spektrum, Amazon

 

Group #6 – like Filter #6
Axon glasses for Migraine

Axon Optics glasses sell as Migraine glasses

Now:

They’ll work for you like Filter #6. Even if your problem is NOT migraine headaches.

Blue light filter glasses
(click to open spectrogram)
% blocked at wavelengths (nm) Where to buy glasses online
400 425 450 480 520 570
Axon FL-41 indoor Migraine relief & anti-fluorescent Glasses 100 50 40 45 50 40 Axon, Amazon
Tester Filter #6 (AXON-like) 40 35 40 45 45 30 GLARminY, Amazon

 

Group #7 – like Filter #7
Computer glasses *

* Most of these sell as glasses for computer glasses.

Now:

They’ll work for you like Filter #7. Even if your problem is NOT computer eye strain.

Blue light filter glasses
(click to open spectrogram)
% blocked at wavelengths (nm) Where to buy glasses online
400 425 450 480 520 570
EYES PC blue light blocking glasses 100 60 35 25 15 10 Amazon
BluTech Lenses 100 50 25 20 20 15 eyeglass.com
J+S Vision Computer & Gaming Glasses 100 35 25 15 10 5 Amazon
JINS Screen PC glasses 100 100 20 10 5 5 JINS, Amazon
Tester Filter #7 – Cutoff: 400nm 100 40 20 20 15 15 GLARminY, Amazon
Gamma Ray eye strain Computer glasses (yellow/amber tint) 95 50 20 15 5 0 Amazon
Nikon – SeeCoat Blue Premium 95 35 15 10 n/a n/a Local opticians
EyeFatigue Computer Glasses 20 15 15 10 5 10 EyeFatigue
PFO Global – iBlu Coat 95 15 10 10 10 5 Local opticians
Zeiss – DuraVision BlueProtect 35 15 10 5 0 0 Local opticians
Zeiss – DuraVision DriveSafe 35 15 10 5 0 0 Local opticians
Essilor – Crizal Prevencia 95 25 10 5 0 0 Local opticians
Zenni UV+ Blue blockers 100 50 5 5 5 5 Zenni
Essilor – Smart Blue Filter 15 35 5 5 n/a n/a Local opticians

 

Why some popular blue blockers aren’t featured

…for example, Felix Gray glasses, or Pixel eyewear, or…

They are not featured for one simple reason:

We couldn’t find their spectral transmission profiles.

So we cannot match them to your blue light sensitivity.

Now:

If you know of glasses that should be in this guide:

– do contact us, or
– leave a comment below – to send us a heads up!

 

Facts about Blue light & blue light filter glasses

The science about the impact of blue light on our body is very rich. And complex.

Below is a peek into it – made as simple and brief as possible.

 

What is blue light?

Blue light is a color in the visible light spectrum.

Blue light wavelengths: ~380 – ~500nm.

Blue light carries more energy than other visible light colors.

 

Why has blue light become a problem

Because our eyes face excessive blue light when performing sharp vision tasks. A very unlikely situation in nature.

And:

Because often we are exposed to blue light when it is not natural.

Unnatural exposure to blue light is due to:
– energy saving lighting and
– digital screens.

 

Blue light is not only bad

For once, it is a beautiful color! 🙂

Also:

We need blue light during the day to function well.

For example:

There is lots of blue light in sunlight. And much less on a cloudy day.

Now:

You know how difficult it is to be upbeat and cheerful on a dark, grey cloudy day :(. It’s the lack of blue light.

But as soon as the sky clears up you feel much, much better! It’s blue light doing it!

Another example:

When the level of blue light goes down:
– in the afternoon and especially
– after sunset
we become sleepy – or at least we used to (before energy saving lighting and digital screens).

So blue light helps our body get in sync with the natural rhythm of day and night. (This is particularly helpful when we need to adjust to a different time-zone).

 

But, there is the bad part

Unnatural exposure to blue light is a problem:

For example:

Too much blue light after sundown may lead to insomnia.

Another example:

Excessive blue light in tasks that require sharp vision causes:

– eye strain
– difficulty focusing
– dry eyes
– headaches and migraines
– neck and back pains, etc.

This is why extended hours of digital screen viewing are so tiring (see more on this below).

For more on blue light see this 4 min. interview with Prof. Fontaine:

 

Why blue light affects some people more?

This is a key question. It helps understand:

– Why anti blue light glasses work for some people but not for others, and
– Why different people need different color blue light filters.

There may be several reasons why we are not equally sensitive to blue light.

Many have to do with how our brain processes light signals. It is complex stuff. Besides, top neuroscientists say it will still take time for them to fully understand it [Measuring and using light in the melanopsin age (2014)].

But we’ll focus on a reason that is one of the best researched.

Here is a kicker:

It happened only towards the end of the last century. The scientists finally explained why blue blockers work for some but not others.

How:

With the variability in blue light blocking effectiveness of our Macular pigment [The Visual Effects of Intraocular Colored Filters (2012)].

 

What is macular pigment

Macular pigment is a natural blue light filter in our eyes:

blue filter - eye anatomy - macular pigment

One of its principal functions is to stop blue light from reaching the macula (or fovea).

We’ll get to the macula in a minute …

Now:

Your macular pigment may block:
– a lot of blue light
– very little of it, or
– somewhere between the two extremes.

If you are in a hurry see at least the first third of this 9 min video by Prof. Beatty:

As suggested in the video, your macular pigment might look like this:

eye strain headache screen glare - MPOD levels 3D

Examples of different macular pigment profiles. Source: [Macular pigment imaging in AREDS-2 participants: an ancillary study of AREDS-2 subjects enrolled at the Moran Eye Center (2013)]

The worst part about it:

It is difficult to have macular pigment measured. Except in a few highly-specialized research labs.

Now:

Research suggests only about one out of five people has an effective macular pigment:

Macular pigment, MPOD, blue light glasses

So, the rest of us (4 out of 5 people) need blue blocking glasses.

But not everyone the same strength anti blue light glasses. Or they won’t work equally well for everyone.

TIP: We can also try to strengthen our macular pigment. Macular pigment supplements improve it in most people.

 

Now:

Let’s see what happens when excessive blue light gets past our macular pigment – to the macula.

 

What is the macula

The macula is a tinny spot on the retina that captures sharp vision images.

Now:

It is sensitive to red and green light only. There are no photoreceptors for blue light at its center (fovea centralis):

red green and blue cones arangement at the macula

The distribution of the cones – photoreceptors for red, green, and blue light at the Macula. Represented by red, green, and blue dots. (Source: Rochester Institute of Technology)

But it gets worse:

Blue light reaches the macula out of focus. So our eyes strain more to see well.

And:

– Blue light may damage our sharp vision cells at the macula (as explained by Prof. Beatty in the video).

Bottom line:

The blue light that gets to the macula is:
– useless
– annoying, and
– potentially harmful.

 

What excessive blue light at the macula feels like

This is how you might feel if there is too much blue light getting to your macula:

– eye strain
– glare
– difficulty focusing
– dry eyes
– headaches and migraines
– neck and back pains
and many other symptoms

 

NOTE: We use central vision when viewing digital screens.

If you are like most, you use a white background. Yet, to display white lots of blue light must be emitted.

Imagine what that blue light does to your eyes!

 

So, now you are could be thinking:

That’s great. But:

 

My problem is NOT computer eye strain!?

Blue blockers also help fix problems like:
– Insomnia
– Migraines
– Glare and light sensitivity (photophobia)
– Age-related Macular Degeneration – AMD (an unproven hypothesis).

We cannot look at all these in detail. Unfortunately.

But, if interested, here are some places to get you started:
Blue blockers help improve sleep
Migraines are more likely provoked by blue light
Blue light is more likely to cause glare and light sensitivity
Blue light is more likely to cause retinal cell death – AMD

 

So summing it all up:

 

What are the best blue light blockers?

The best blue blockers are those that match one’s blue light sensitivity.

Blue light sensitivity varies from person to person. It is conditioned by blue blocking strength of one’s macular pigment.

NOTE: Higher blue blocking effectiveness is not necessarily better.

 

Do blue light glasses work?

Blue light glasses do work for about 4 out of 5 people. But their blue blocking level must match each person’s blue light sensitivity.

 

Do I need blue light blocking glasses?

You cannot be sure whether you need blue blockers unless you try wearing them. This is because you cannot know your blue light sensitivity.

 

What are blue blockers?

Blue light blocking glasses reduce/filter blue light. They should block blue light more than the rest of visible light.

For example:

Suppose my screen emits 100 units of blue light at 445nm towards my eyes:
– Without glasses, my eyes take in all 100 units.
– WITH blue blocking glasses my eyes only take in 30 units of blue light at 445nm. That’s supposing the glasses block 70% of blue light at 445nm.

Such blue light glasses might block only about 10% of the rest of visible light (~500nm – ~760nm).

 

How do you know how much blue light is blocked?

You need to look at glasses’ spectral transmission profile. It describes how much light they transmit/block. At each wavelength!

 

How to read spectrograms?

The easiest way to grasp spectral transmission data is in a spectrogram.

Its curve tells you what is the blue-blocking rate at each light wavelength.

The image below explains how to read a spectrogram. (It’s the spectral transmission profile of pink FL-41 blue block glasses).

Blue light filter tester-how to interpret spectrograms

 

Do yellow glasses block blue light?

Yes, yellow glasses block blue light.

But:

You can’t judge their blue blocking range only based on their color. The difference between two yellow filters can be huge.

For example:

The two filters below are both yellow (see the light grey box under the graph).

Note the big difference in how much blue light they block:

Comparing spectral transmission of two yellow tints

Source: Adapted from Lee FILTERS

The same may be true for other blue blocking colors, such as:
– amber
– orange
– red
– pink (FL-41)

 

Do blue light glasses have to be yellow?

No. Blue blockers don’t have to be yellow.

Glasses that use tinting technology to filter blue light tend to be:
– yellow
– pink-ish (the FL-41 tint)
– amber
– orange
– red

Clear blue light filter glasses may use:
– blue light reflective coating – produces a blue reflection on the lens, or
– blue light absorbing monomer – appear almost clear.

Now:

Blue-blocking rate depends on the filter color. As does color distortion:

 

Do blue blockers distort color?

Yes, they do. You can’t block blue light and see it too. Obvious, right?

But:

Glasses that block very little blue light are almost clear

Color distortion of “clear” blue blockers is minimal. They change:
– blue to a darker blue
– white to off-white.

Find examples of such glasses among the Group #7 blue blockers.

Blue blockers that block all blue light must be orange (or red)

Color distortion of orange (or red) glasses is significant. They change:
– blue to black and
– white to orange (or red).

Find examples of such glasses among the Group #1 (or #0) blue blockers.

Yellow and Amber glasses fall between:
– yellow glasses are closer to clear blue blockers
– amber glasses are closer to orange blue blockers.

 

Do computer glasses have a prescription?

Computer glasses may or may not have a prescription. Their principal property is that they block blue light.

In some cases computer glasses do have a prescription:
– People who need prescription glasses need it also on their computer glasses.
– Some people find relief with a small power add to their computer glasses. Even though they otherwise don’t need prescription glasses.

 

Back to you

Congratulations. Now you know a lot about blue light and blue blockers. You are ready to make good buying decisions.

Let us know in the comments:

Do you find this guide helpful?

Is something missing?

And,

When you come back to find the best match for your favorite Test kit Filter:

Do comment on your experience with the Tester.

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33 thoughts on “The Ultimate 2019 Blue Blockers Buying Guide

  1. Hi Uroš, thanks for the great info collected in this site. I was gathering similar information to chose a blue blocker glasses when I found your page again.
    I would like to recommend two other brands to check:

    Blue Shark Optics
    They claim that their product filters significant amount of blue light (94.5% 400nm-500nm) without seriously distorting color perception. In this link
    https://www.bluesharkoptics.com/evidence
    they provide spectograms about it, but for me it seems to be too good to be true. What is your opinion?

    Ra Optics
    https://raoptics.io/faq
    They have two tints (Nocturnal Red blocks all blue up to 550nm and Daytime Yellow up to 450nm)
    Unfortunately I did not find spectogram on their site.

    Finally I ordered a Lite tinted Prisma glasses from Innovative Eyeware, listed already in your comparison chart. The brand is at at 13th place in your list, but the info in the table needs to be corrected/updated as they have already four tints (Pro, Lite, Easy, Drive) and the products have anti reflection coating according to their website. On this page they have a table containing the data of the different tints for comparison:
    https://www.innovative-eyewear.shop/en/gamer/89/prisma-gamer-brille-wiesbaden-blueblocker-brille-computerbrille-bluelightprotect-easy-wb702

    Best regards

    Peter Fazekas-Szucs

    1. Hi Peter! Great to hear from you again and thanks for this info. You always have useful hints to share :).

      The Blue shark optics lens seems very interesting. It seems the closest to Stephane’s wish: “I’m still waiting for blue blockers with a sharp cutoff around 450nm…” in the comment below.

      Principally, because it blocks most light to about 450-460nm. This tends to be where digital screens (and energy saving light bulbs) emit most blue light.

      Very similar to NoIR #50UV 54% Yellow and Tester Filter #3 (see thistable).

      Clearly, they do distort color (you can’t block blue light and see it too). But the distortion is focused only on low blue light wavelengths.

      Thanks again and best, 🙂

  2. Thank you for this precious information! I’m still waiting for blue blockers with a sharp cutoff around 450nm…

    1. Stephane, thanks for your comment.

      Yes, there is not much with those spectral transmission properties in the market. (Is this meant to be a hint for the vendors?)

      Perhaps NoIR #50UV Yellow – see this table.

      If you want to check what effect such filter will have on you, try our Tester Filter #3.

      It is probably the closest to what you want in terms of spectral transmission. (But probably not something you would want to wear in public :)))

  3. Hi, I have been researching for blue light computer glasses. I found your article very helpful. However, when I looked at how you rank the glasses vendor, I found one big flaw; it does not really tell people how good the blue-light lenses are.

    A vendor can have thousands of styles, put out spectrogram, with many tints, AR and prescriptions to get a full mark but can offer an extreme lousy blue-light protection. This won’t help consumer like me wanting to buy a good quality blue light protection glasses.

    You should add an true technical evaluation of their lenses offering. Dividing into 2 categories, light yellow tint vs. amber tint. Because naturally, amber will protect better yellow tint, but it will look awful. (e.g. Gunnar) You need to compare apple to apple and orange to orange.

    Then in each group, evaluate the % of protection for the most damaging wavelength between 420nm – 450nm and rate them according with 100 pts. This will provide a much better and informative review for people.

    Hope this help.

    1. John, thanks for your comment! I agree with you that there could be many more ways (perhaps better ones?) of evaluating computer glasses lenses. In the design of this overview, only objective measures relevant to number of styles and blue blocking characteristics of the lenses were chosen.

      Spectral transmission is the most objective way of comparing blue-blocking characteristics of different filters (computer glasses). It is also what makes all the differences in preventing blue light associated conditions.

      Tint is, unfortunately, not as objective.

      Would it be helpful if in the review of the article, a column suggesting the tint would be added? I understand there are people who also weigh the look/color of the lens in addition to its light filtering characteristics.

      Thanks again and best,

      1. Hi Uroš , as you have mentioned, tint is not objective. There are different tints. The main one would be light yellow and amber.. That will give people some ideas. However, as mentioned, the more objective test would be based on the spectrogram. Once you can somehow classify them into the different tint group, then measure the block % from 420nm-450nm.

      2. John, thanks for your suggestions!

        I forgot to mention the classification of blue light filters in this table (however, it lists all different filters in addition to glasses, moreover, the classification is only based on transmission). See if you find it useful.

  4. Great information. I have suffered various amounts of photophobia my entire life, sometimes associated with headaches. I spend a lot of my day in front of a screen or two or three. I just got a new iPad Pro and today changed the screen to utilize their built in blue light protection. I felt some immediate relief but don’t know if it is enough. I wear trifocals regularly, also have prescription computer glasses, I’m wondering if any of the companies you have listed have clip-ons? I’ve seen them from one company, but am not sure if they would be adequate? Also, interestingly my optometrist who I have been seeing for years this year commented that my light blue eyes would put me at increased risk for I think night-time glare.

  5. Do Felix Grey glasses actually block blue light to a substantial extent? They claim to be transparent and to have no color distortion. On a similar note, are there any glasses that block/filter blue light but have no color distortion (e.g. have a yellow tinge)?

  6. Thanks for this post!
    In the case of Zennioptical would you suggest using their Beyond UV blue blocker clear lenses or suggest against using them if they might deflect UV?
    And what is the best option for UV blocking only (for plastic lenses)?

    1. I mean for day time clear lenses Rx glasses, mainly as a UV protection. If there are better alternatives for this I would be interested too.

      1. Mory, thanks.

        According to Zenni (see FAQ) BEYOND UVs don’t reflect UV and blue light but absorb it:

        BEYOND UV blue blockers from Zenni are made with a special blue-light blocking monomer (http://uv420cut.com) from Mitsui Chemicals, a global leader in development and manufacturing of ophthalmic lens materials, that is directly incorporated into the lens. (…) By absorbing blue light, this monomer prevents blue light from passing through the lens to your eye.

        Based on this information I would say it is safe to say that you shouldn’t have problems with UV and Blue light reflecting from back lens surface back into your eyes. (I haven’t personally tried them, though – so we have to take their word for it).

        If you end up getting a pair, do let as know whether they reflect blue light or not! Or can anyone else out there comment on it?

        Unfortunately, I haven’t had a chance to study UV blocking technologies used by the different brands. However, with respect to your other choices for UV protection, you should be safe, as most lenses today block UV light up to 400nm (the UV400 label). But as you attentively noted, you need to also check whether they block UV through absorption or reflection – as done above with ZENNI’s BEYOND UVs.

        A comprehensive review/comparison of transmissions this type of lenses see the bottom part (near Filter 7) of this table.

        I hope that helps?

      2. Thanks Uroš Bole for the detailed answer.

        In the catalogue of the manufacturer they claim indeed for a full blocking via absorption until 420nn beyond the 400n blocking standart. Now how critical is this extra blocking of 400-420nn? Although It’s not relevant to LED light or sleep problems is it still so valuable for the eye’s health?

      3. Mory, hi again.

        Yesterday I forgot to include a link to a spectrogram to BEYOND UVs (that they sent to another visitor to this site) – in case you find it useful.

        To your question: That is hard to say. There seem to be no agreement within the scientific community.

        Also, it will depend for what issue you want to use blue blocking glasses. In addition to the ones you mention it might be:

        for AMD, until research is more conclusive on what wavelengths are harmful, I would play it safe and try to find glasses that block wavelengths at least up to 460nm. Following this rationale, a cutoff at 420nm (as in the case of BEYOND UVs) is preferable to a cutoff at 400nm.

        for visual comfort – to reduce eye strain, that is very subjective, because among many other things (which largely happen in our brain – and are not well researched yet), it depends on how much blue light your macular pigment blocks. That varies a lot from person to person. Many people report relief in digital screen based tasks even with weaker blue blockers than BEYOND UVs. Perhaps they are the majority (I am guessing based on what type of blue blockers seem to be most massively sold in the market – I have no data for this). But there are others who need a cutoff at 550nm or even beyond.

        Personally, I’d take the extra 20nm of blockage. But you may have other issues (unknown to me) in favor of other alternatives to BEYOND UV with a cutoff at 400nm!?

      4. Thanks for the detailed answer!
        For my (high) prescription it seems there’s no better alternative to Beyond UV so I’ll try them.
        Now when you talk about cutoffs fo AMD you talk about people with risk factors or as a general prevention?

      5. Mory, I am talking about those who were diagnosed with AMD and those who might have some risk factors, for example a parent who has/had AMD.

  7. This is a fantastic resource for blue blocking glasses, especially the spectral filtering information. I can only imagine the huge amount of time you put into compiling this. I am using it to select a glasses designed to prevent melatonin disruption before sleep. Thanks for providing this!

  8. Hi, great info, i wanted to ask about your opinion on Essilor Eyezen, i can only get either gunnars (which are about $300 in my country) or essilor, crizal, etc (the mainstream ones) i’m unable to get jins for instance, tried to order from reading glasses etc but there are power limits so in the end i couldn’t. I noticed smart blue filters out -20%, do you think i could get some releive for eye fatigue and dry eyes with eyezen? Thanks beforehand.

    1. wequendi, thanks for your question!

      I wish I could give you a plain answer, but I can’t :(. Each person vision is specific.

      Besides, I haven’t been able to find any spectral transmission data for Essilor Eyezen (except: filters at least 20% of Harmful Blue Light from their website. However, it is probably safe to assume that it is not too far from their other products: Crizal Prevencia, or Smart Blue Filter.

      – 20% is not very much (but I just had a case of a person who finds great relief with another brand of glasses that also filter such a minimal proportion of blue light!?). You could also assume that, if Essilor makes it, it is probably going to be helpful for a great majority of eyes. The trouble is, we don’t know if your eyes belong to that majority or not!?
      – what is “Harmful Blue Light”? Each vendor has their own interpretation of that ?!?

      In light of all these unknowns the only way to really know is to try it. But I understand that in your case trying it would cost you quite a lot of money, and you probably can’t return the glasses because they the lenses are tailored to you.

      Hence, for this type of cases I’ve been developing a Filter Tester:

      It is eyewear (that should also fit over regular glasses), with 8 interchangeable Filters. Each Filter blocks a different proportion of blue light – from very little – just a bit more than a regular, clear lens, to all blue light and more – up to 580nm!

      Hopefully it is ready by the end of this month – can you wait that long?

      It will be offered in exchange for what people can/want to give, we’ll see if that is sustainable. (To make the Tester and ship it costs US $10).

      (If interested subscribe to GLARminY to be notified when Filter Tester is ready).

      1. wequendi, thanks for this info and question!

        The spectral transmission of Seto Anti-Blue Ray lenses might be something similar to SeeCoat Blue Premium by Nikon (see spectrogram above) that also filters about 35% of blue light on that interval.

        It is one of the “no color distortion” options. Compared to other blue blockers, it is in the group of those that filter the smallest proportion of blue light (the next step down would be regular clear lens, that filters about 10%). Many big lens manufacturers produce blue blockers in this range, which may mean two things:
        (1) this type of glasses effectively help a lot of people (mentioned in my previous reply to your comment),
        (2) the manufacturers try to fulfill the ISO requirements for category 0 ophthalmic lenses, i.e., transmittance of visible light over 80% (the ISO 12312-1:2013 standard applies in the EU, other countries have similar standards.

        (Such international standards exist to ensure that spectacle lenses do not adversely affect the perception of colour (for example of traffic signals) and to ensure that suitable UV protection is offered to the eye. Recommendations are also given on limitations of the use of certain lenses that block more light (particularly blue light). For example, in night driving wearing of strong blue blockers is discouraged because our night (low-light) vision depends principally on blue light.)

        Anyhow, sorry about this long answer – it is not really a digression – I felt it was important to clarify why there might be so many blue blockers that filter relatively small proportion of blue light.

        But as always, the only way for you to know 100% if a blue blocking lens will help you, is to try it 🙁 … or at least to try a filter with similar spectral trasmission properties :).

    1. karthik: I don’t have first-hand experience with Crizal Prevencia lenses.

      However, it should be really easy for you to check. Take the glasses/lens, take it outside during the day (best if sunny). Hold the lens at arms-length and look at it from the back of the lens (as you would if looking through the glasses. Do you see a blue reflection on the surface of the lens? If you do, that is blue light reflected by the lens. Under the conditions described in the video you’ve mentioned the lens would also reflect blue light (and UV light) back into your eye when you wear them.

      I hope that was helpful!?

      1. Thanks for the reply. Have you heard of Tokai lutina lenses? It is a japanese company and is available in some countries. They claim that their lenses absorb 94% of blue light between 400 nm to 420 nm. What do you think of their lenses?

      2. Karthik: hi again.

        No, I hadn’t heard about Tokai Lutina lenses. But thanks a lot for bringing up the question!!

        Here is what you can deduce from the spectral transmission curve of Tokai Lutina lenses (source: Tokai Optical):

        https://glarminy.files.wordpress.com/2016/01/blue-blockers-tokai-lutina-spectral-transmission-curve.gif

        It is certainly an improvement over regular lenses with a cutoff at 400nm, as shown on the graph above. No doubt those shortest visible wavelenghts carry most energy.

        But, sunlight blue light spectral power distribution (SPD) peaks at ~460nm (upper curve in the image below):

        https://glarminy.files.wordpress.com/2016/01/anti-glare-computer-eye-strain-diet-macular-pigment-vs-sunlight-and-blue-haze.jpg

        It is therefore not surprising that to match the Sun’s SPD our macular pigment (natural blue light filter placed in the eye, right in front of the macula) peak absorbance is at ~460nm.

        https://glarminy.files.wordpress.com/2016/04/blue-filter-crystalline-lens-and-macular-pigment-absorption-curves1.jpg

        (Note also, that our crystalline lens also helps to block a good proportion of blue light below ~420nm).

        Moreover, digital screens peak arround ~450-460nm:

        https://glarminy.files.wordpress.com/2017/02/eye-fatigue-high-blue-peak-in-modern-computer-screens-spectral-power-distribution.jpg

        Now, if you go back to the Tokai Lutina lenses’ spectral transmission curve, you’ll see that at ~440nm its transmittance is above 90% (blocks only 10%) and above 95% by ~450nm. As such it hardly reduces the peak of blue light emitted by digital devices or the Sun.
        However, to reiterate, Tokai Lutina lens is certainly better than a regular clear lens, if you are choosing between these two.

  9. Thank you for such an informative and detailed post. I just ordered the amber Uvex using your Amazon commission link (they’re cheap, stylish, and 2 day shipping). If I don’t like them then I’ll try a more expensive brand. I’m desperate to get eye relief. I work behind a computer all day and I have serious eye pain nearly every day.

    1. Jeff, sorry to hear about your eye pain! I know it is a desperate situation. For quick relief I recommend How to reduce eye strain: Treatment with heat and cold. It helped me carry on with my work before I started figuring out all the things I write about here on GLARminY (now I don’t need to do the hot and cold treatment any longer :).

      Assuming you suspect that blue light has been causing your eye strain, your choice is reasonable. If you are right you are likely to feel immediate relief due to blue light reduction. Importantly, you’ll know blue light is your problem.

      After some time you might realize you are not completely comfortable with the glasses. This could be because they don’t have Anti-Reflective coating. Then you might be ready for blue blockers with AR.

      Also note that visual comfort for the more computer light* sensitive is a mosaic of many measures which reinforce each other. There are several more things you can do as described in the posts on GLARminY.
      *computer light: all light computer (digital screen) user’s eyes are exposed to independently of its source; light emitted by screens – focus on blue light; indirect glare and reflections from the screen and other surfaces in the field of vision; and ambient office/workstation lighting (artificial and natural)

      I hope blue blockers help you. Let us know how it’ll have gone! And thanks for your support!

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