The Best How To Test Your Blue Light Blocking Glasses Ideas. So test your glasses with the test pictures at the beginning of this article. The green portion should also darken.web

This product came with a tester card and light, really solidifying my beliefs of its effectiveness. The blue portion of the chart or wheel should turn gray or black if your lenses are blocking blue light. If the lights are purple or violet then the glasses are not blocking the blue light effectively.




