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.
Scientifically Tested and Validated
Night Swannies® are the only blue light blocking glasses to have been independently and scientifically validated by several studies.
Journal of Applied Psychology
A 2020 study by the University of Washington and Indiana University was published in the Journal of Applied Psychology and featured in the Harvard Business Review. The study found that workers who wore Night Swannies® Blue Light Blocking Glasses in the evening before bed, significantly improved the quality and quantity of their sleep, along with their effectiveness at work the next day.
Journal of Applied Psychology
A 2020 study by the University of Washington and Indiana University was published in the Journal of Applied Psychology and featured in the Harvard Business Review. The study found that workers who wore Night Swannies® Blue Light Blocking Glasses in the evening before bed, significantly improved the quality and quantity of their sleep, along with their effectiveness at work the next day. Read More
Read the full study here.
University of Arizona
The lenses in Night Swannies were found to be among the top performers in lenses that block sleep-disrupting light, in a study conducted by the University of Arizona.
Dr Michael Grandner, Director of the University's Sleep and Health Research Program tested 50 lenses from a variety of brands for their effectiveness in blocking short-wavelength light that suppresses natural melatonin production.
Dr Grandner says that Night Swannies "have managed to combine effectiveness at filtering sleep-disrupting light while also allowing in non-sleep disrupting light, striking the right balance between sleep benefits and wearability and thus allowing for comfortable reading, screen viewing and night time activities without appearing too dark."
Read the full study here.
University of Arizona
The lenses in Night Swannies were found to be among the top performers in lenses that block sleep-disrupting light, in a study conducted by the University of Arizona.
Dr Michael Grandner, Director of the University's Sleep and Health Research Program tested 50 lenses from a variety of brands for their effectiveness in blocking short-wavelength light that suppresses natural melatonin production.
Dr Grandner says that Night Swannies "have managed to combine effectiveness at filtering sleep-disrupting light while also allowing in non-sleep disrupting light, striking the right balance between sleep benefits and wearability and thus allowing for comfortable reading, screen viewing and night time activities without appearing too dark."
Read the full study here.
Sleepscore Labs™
Night Swannies® are the only blue light blocking glasses that 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 the full study report here.
Sleepscore Labs™
Night Swannies® are the only blue light blocking glasses that 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 the full study report here.
More 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
“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
“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.
© 2021 Swanwick Sleep