Do I need a blue light filter for my Kindle Paperwhite?
Best answer: Yes. The Amazon Paperwhite is one of the least intrusive blue-light e-readers available on the market. However, it does still use one for back-lighting and can cause irritation and disrupt your sleep cycle. A simple stick-on filter or pair of specialty glasses can help put your eyes at ease.
Stick-on solution: Dadanism screen protector ($11 at Amazon)