The Science

The Science

We’ve done our research.

Here at Swanwick, we care about developing products that are carefully researched and backed by science. On this page we have compiled a growing collection of relevant independent scientific studies from all over the world, so you can learn more about blue light, the science of why Swannies Blue Light Blocking Glasses work, and how they can help you achieve your best.

We’ve done our research.

Here at Swanwick, we care about developing products that are carefully researched and backed by science. On this page we have compiled a growing collection of relevant independent scientific studies from all over the world, so you can learn more about blue light, the science of why Swannies Blue Light Blocking Glasses work, and how they can help you achieve your best.

Lab Tested and Validated

Night Swannies are the only blue light blocking glasses which have been independently validated by SleepScore™ Labs. A 2016 study conducted by SleepScore™ Labs tested the effects of using Swanwick’s Night Swannies on 30 participants over a 4 week period using sleep monitoring device S+ by Resmed. Significant improvements in self-reported and objectively measured sleep factors were noted. These included:
  • 73% of participants reported Swannies improved their overall sleep
  • ​11 minute decrease in time spent falling asleep
  • ​24 minute decrease in time spent awake during the night
  • ​37% increase in feeling rested in the morning
  • ​14% increase in time spent in deep sleep
  • ​14% increase in average daily sleep quality

Read full study report here.

Scientific studies on the benefits of blue light blocking glasses

Lab Tested and Validated

Night Swannies are the only blue light blocking glasses which have been independently and scientifically validated. A 2016 study conducted over a 4 week period using sleep monitoring devices showed significant improvements in self-reported and objectively measured sleep. This included:
  • 73% of participants reported Swannies improved their overall sleep
  • ​11 minute decrease in time spent falling asleep
  • ​24 minute decrease in time spent awake during the night
  • ​37% increase in feeling rested in the morning
  • ​14% increase in time spent in deep sleep
  • ​14% increase in average daily sleep quality

Read full study report here.

Scientific studies on the benefits of blue light blocking glasses

OTHER STUDIES ON THE BENEFITS OF BLUE LIGHT BLOCKING GLASSES

Columbia University, United States of America

Blocking nocturnal blue light for insomnia: A randomized controlled trial (2018)

“Amber lenses represent a safe, affordable, and easily implemented non-pharmacologic behavioural therapeutic intervention for insomnia symptoms.”

University of Basel, Switzerland

Blue Blocker Glasses as a Countermeasure for Alerting Effects of Evening Light-Emitting Diode Screen Exposure in Male Teenagers (2014)

“We conclude that the use of [blue light-blocking] glasses in male adolescents while sitting in front of an LED screen in the evening can attenuate melatonin suppression and alerting effects before sleep. BB glasses therefore have the potential to acutely impede the negative effects modern lighting imposes on circadian physiology in the evening.”

Keio University School of Medicine, Japan

Protective effect of blue-light shield eyewear for adults against light pollution from self-luminous devices used at night (2015)

“Our results show that, according to some sleep indices, sleep quality is significantly better in healthy adults after using the blue-light shield eye-wear while using self-luminous portable devices at night... Blue-light shield eye-wear could, therefore, protect against unconsciously decreased sleep quality due to blue-light pollution from self-luminous devices at night.”

Laval University

Blue blocker glasses impede the capacity of bright light to suppress melatonin production (2006)

“Our data show that, irrespective of gender, orange lens glasses can effectively block the capacity, of a 1-hr light pulse of 1300 lx in the eye, to suppress melatonin production.”

There are numerous studies on the benefits of blue light blocking glasses, the negative effects of blue light on sleep, and health detriments from sleep deprivation. For a list of recent scientific studies and media reports on these topics, please click here.

Title

Publication

The Journal of Biological and Medical Rhythm Research
(University of Toledo)

Graefe's Archive for Clinical and Experimental Ophthalmology

Bipolar Disorders an International Journal of Psychiatry and Neuroscience

Scientific studies on the negative effects of blue light exposure

Scientific studies on the negative effects of blue light exposure

Title

Publication

Scientific studies on the health implications of sleep deprivation

Scientific studies on the health implications of sleep deprivation

Title

Publication

Neuropsychiatric Disease and Treatment

Scientific studies on green light

Scientific studies on green light

These studies assess blue light vs green light’s effectiveness in increasing alertness, performance and brain activity and the impact on sleep. The results indicate that blue light is more effective at increasing alertness, performance, brain activity and negatively impacting sleepiness. They also indicate that green light is not a major factor in increasing alertness or performance, nor impacting sleepiness, and in fact, one study on mice shows that green light increased sleepiness.

Title

Publication

Media Coverage

Blue light and blue-blockers have been covered extensively by the media. These are not scientific studies, but news reporting on those studies.
    • Harvard Health Publishing “Blue light has a dark side” (2015)

    • Rodriguez. Advanced Sleep Medicine Services "Why You Should Wear Blue Light Blocking Glasses Tonight." (2014)

    • Galbraith. New York Times "Can Orange Glasses Help You Sleep Better?" (2015)

    • International Business Times “Sleep Faster With A Pair Of Orange-Tinted Eyeglasses” (2015)

    • The Conversation. “Can wearing orange-tinted glasses before bed help you sleep? Only one way to find out…



    • Scientific American “Q&A: Why Is Blue Light before Bedtime Bad for Sleep?” (2015) 

     •Psychology Today “Blocking Blue Light Helps Sleep?"(2013)


    • VSP Vision Care. (video) "Blue Light And The Effects On Our Eyes" (2015)

    • Fox News (video) "How blue light affects children’s eye health” (2014)

    • Psychology Today “Blocking Blue Light Helps Sleep?” (2013)

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