Anti Blue Light Tester Card for Glasses Reusable PolarizedTest Anti-Blue Light Cards and Blue Light Generators

This anti blue light detection card is a pratical tool. The strong the blue light, the deepthe color change, which is to Tester. Suitable for individuals who spend long hours use electronic device, such as students, office worker, and programmers, as well as those concerned about maintaining eyes. Applicable in various environment like home, offices, and schools, these Tester cards allow you to easily evaluate the blue light blocking effectiveness of your glasses. effective eyecares whenever necessary. Accurately Tester the effectiveness of your glasses with this set of blue light Tester cards. your eyes from electronic device radiation. Improve your eye health with these user friendly glasses Tester cards. Stay aware of potential eye strain and enjoy enhances visual comfortable., Manufacturer: YIGZYCN