The blue light filter can be added to any lenses with or without powers, so no matter what subscriptions you have, this is an excellent way of taking good care of your eyes and your general health. Hit the "Add to Cart" button and move on to choose your combination of options. Blue light filter is one of them. The blue light of digital devices can cause headaches, eye strain and disturb your sleeping pattern. A blue light filter coating is a blue light blocker. Even with the blue light blocker we recommend taking pauses from digital devices such as computers, smartphones and TV-sets during the day.