Blue Block Glasses

416-844-9160 or

Another Way to Test Your Blue Light Filtering Eyewear

Posted by Siriya Mitsattha on July 21, 2016 . 0 Comments

Since our blog post titled ‘How Effective is your Blue Light Filter - Test Your Glasses with this Graphic’ we’ve received a lot of questions from people curious to learn more. Often times, people have purchased glasses from a source and are not certain if they are truly blue light filtering and if they are – how effective.

So we decided to design another graphic to help our readers test their glasses. But first, we’ll go through a little background on how color is displayed and perceived. The image below illustrates a simple Red Green Blue (RGB) color model that most should be familiar with.

RGB Color

Source : Wikimedia Commons


The above image shows an...

Continue Reading »

Children and Melatonin Supplements : A Growing Concern

Posted by Siriya Mitsattha on June 26, 2016 . 0 Comments

Almost 35% of Canadian children suffer from some type of sleep related issue. Common sleep conditions are pediatric insomnia, delayed sleep onset, frequent night awakenings and difficulty falling asleep or returning to sleep. 

Child Using Ipad impact on Sleep

Use of electronic devices before bed time is known to cause sleep disruption 

In order to better understand how parents address these issues, The Canadian Paediatric Society (CPS) conducted a survey in 2015 titled  The Usage of Sleep-Promoting Medication in Children. They asked parents and caregivers about their use of both over-the-counter and prescription medication in aiding their child with sleep.

Out of 346 survey responses:

  • 21.4% of parents admitted using over-the-counter melatonin...
Continue Reading »

Does Tryptophan in Turkey Make You Feel Sleepy ? - Guest Post by Dr. J. Colon

Posted by Blue Block Glasses Team on November 25, 2015 . 0 Comments

Everyone swears that eating Turkey on Thanksgiving puts them to sleep immediately. How much truth is there to this anecdote? We decided to check in with Sleep Specialist, Dr. J. Colon. 
Dr. Jose Colon

As Thanksgiving approaches, every year I’m asked about tryptophan and sleep. It seems to make sense to people that turkey induces sleep because it has tryptophan and on Thanksgiving people are sleepy. Not so fast! People are sleepy on Thanksgiving not because of turkey alone. It’s because a person may have 5 servings of turkey, 4 side dishes, 3 slices of pie, 2 glasses of wine (maybe reverse the order), and 1 additional serving of turkey as they stand around and pick at what's left of the carved turkey.

If turkey was the magic link for sleep it would be illegal to...

Continue Reading »

Yay - Blue Block Glasses featured on Healthful Pursuit!

Posted by Daniel Giavedoni on November 01, 2015 . 0 Comments

As we've said before - proper sleep hygiene is just one part of your overall healthy lifestyle. There's so much more you should do - from exercising regularly to eating the right foods at the right times.

That's why we're so excited that our Blue Block Glasses were featured in a recent episode of 6 Things for Awesome Health, over at Healthful Pursuit.  

Healthful Pursuit Sleep Glasses

In the feature, Leanne talks about how light could be impacting your sleep, your health and how she uses the glasses after coming home in the evening. 

When you have a few minutes, we'd recommend checking the rest of the series - called What Leanne Loves  - it's entertaining, informative, and could help you discover other products you may love!  

Leanne Vogel from is a Holistic Nutritionist...

Continue Reading »

How do Colours Appear when Blue Light is Filtered? [Infographic]

Posted by Blue Block Glasses Team on October 18, 2015 . 0 Comments

Recently we received a question: how should colours appear when blue light is filtered? We took this question and turned it into an inforgraphic!

This post covers back-lit devices that emit blue light, like phones and laptops. The perception and recognition of blue objects will be covered at a later date. 

What happens when blue light is filtered? [infographic]

How do colors look when blue light is blocked?

 All images covered under Wikimedia creative common licence, unless specified. 

Credit to PiktoChart for design tools.

Continue Reading »

Athletes Use Blue Blocking Glasses to Enhance Sleep and Improve Performance

Posted by Blue Block Glasses Team on August 30, 2015 . 0 Comments

Sleep and Athletic Performance

The connection between sleep and athletic performance has long been known to researchers. Because athletes go through such grueling physical and mental training regimes – it is crucial for them to get a good night’s rest.

Until recently, sleep was seen as a background variable: athletes were told to get enough sleep but focus on diet, exercise and practice. Now however, the role of sleep and its potential to impact athletic performance is being reassessed. 

Improving Sleep by Focusing on Light Exposure

As part of a new program to improve sleep, elite athletes on at least two teams: the Tennessee Volunteers Football Team and the Chicago Fire soccer team have been wearing blue light blocking glasses at night. The glasses help the players block blue light from their phones...

Continue Reading »

Do You Have Trouble Sleeping? Use these Questions to Find Out

Posted by Daniel Giavedoni on July 27, 2015 . 0 Comments

A better way to rephrase that question may be what would you consider a good night sleep? 

When was the last time you woke up and said 'Wow - I feel refreshed!'  After all - this is the purpose of sleep - to help us feel refreshed!

Asking someone if they sleep enough is a tricky proposition. Most people are bad at judging their behavior objectively, and sleep is particularly difficult because the number of factors involved. 

Recent advances in technology have made it easier to track sleep however there's still a long way to go.

In the mean time:  

Use these questions to see if you're on the right track :
  1. You're able to fall asleep within 15 - 20 minutes of lying down in bed

  2. You sleep throughout the night without interruption 

  3. You regularly sleep 7 - 9 hours

  4. You wake up feeling...

Continue Reading »

How Effective is your Blue Light Filter - Test Your Glasses with this Graphic

Posted by Blue Block Glasses Team on July 05, 2015 . 0 Comments

Online, there are a lot glasses claiming to block, filter or reduce blue light. Without clear criteria for comparison, it is difficult to assess the effectiveness of a pair. This brief article focuses on two tools to assess blue blocking glasses, both before and after the purchase. 

Before You Buy Blue Light Filter Glasses 

The first step is to identify why you want to filter blue light. If your primary purpose is simply reduce the glare on the computer screen then a free software like f.lux may do the trick.   

If you are looking to truly filter out blue light - then be sure to search for the transmittance spectrum of the glasses you're considering. The transmittance spectrum is a graph that that illustrates the percent of light passing through the lens and most retailers should make them available if requested. For...

Continue Reading »

Blue Blocking Glasses Shown to Significantly Improve Sleep Quality

Posted by Daniel Giavedoni on June 14, 2015 . 0 Comments

New Study Shows that Filtering Blue Light Before Bed Improves Sleep of Adolescents

A study has shown that wearing blue blocking glasses in the evening "prevented light-induced melatonin suppression and alerting effects in young adults, and significantly improved subjective sleep quality after a continuous 2-week application"

The study was undertaken by Swiss scientists and published in the Society for Adolescent Health and Medicine. Researchers were attempting to assess if blocking blue light from multimedia devices would result in a measurable improvement in sleep promoting markers.

Details of the Study 

Thirteen healthy, male, high-school students between 15 and 17 years old were recruited for the study. Half the subjects were given blue blocking glasses and the other half given a clear lens (control group). 

The study was conducted in two phases : the preparatory period and the laboratory period. The first phase of the study lasted a week and...

Continue Reading »
Back to the top