100% UV PROTECTION: These HD bluelight blocker glasses are “UV400” rated which, means the lenses will block UV light up to 400 nanometers (100% UVA & UVB rays). Prolonged exposure to the sun’s harmful UV rays can cause damage to your eyes. You can wear these blue light blockers indoors when working at the computer or outdoors.
FLEXIBLE HINGES: Tired of painful sunglasses that squeeze your temples or get loose and slip of your head? These blu light glasses feature flexible hinges that flexes to fit your head and springs back to its original size. So, if you are wearing these blu blockers before sleeping, you need to make sure they don't hurt your head!
WHY BLOCK BLUE LIGHT IN THE DAY?: Blue light exposure increases the risk of macular degeneration. Blue light penetrates all the way to the retina (the inner lining of the back of the eye) and can potentially damage the light-sensitive cells in the retina. Traditional Gray color sunglass lenses do not filter out blue light in the UV spectrum