Can Swannies cure my insomnia? Sam June 06, 2017 04:39 Updated Follow There is compelling scientific evidence that blue light blocking glasses can help alleviate insomnia. Related articles When will I notice results? What's different about your Sleeping Mask? Do Swannies work during the day and outside in the sun or daylight? How long is a sleep cycle? Is there a return/exchange policy? Comments 0 comments Article is closed for comments.