How do Night Swannies Blue Light Blocking glasses work?

Through extensive research and testing, we have developed a lens which combines a specifically colored tint, with special blue light reflecting AR coatings to block blue light that is harmful to your sleep from entering your eyes.

These innovative lenses filter out blue light on the visible wavelength spectrum that has been proven to disrupt sleep. The lenses allow all other light to be transmitted, leaving you free to watch TV and use electronic devices without negatively affecting your body clock.