Suitable for Kids 3-6 years old. What is blue light?Blue light has a very short wavelength, and so produces a higher amount of energy. Studies suggest that, over time, exposure to the blue end of the light spectrum could cause serious long-term damage to your eyes.Nearly 70% of people experience digital eye strain due to prolonged use of electronic devices. - The Vision Council.Our Blue Blocker Lenses are virtually clear lenses made with a special blue-light blocking polymer that prevents blue light and UV rays from passing through the lens.