SunDown Billie Blue Blocking Glasses - Black - PrescriptionDescription Features Amber Blue Light Blocking Glasses Our scientifically designed and manufactured blue light blocking glasses not only all block blue light but make you look good while doing it! The SunDown Amber Lens has been specifically designed and proven to block 100% of blue from 400 500nm. Using the SunDown Amber lenses provides the perfect balance of a lighter amber tint allowing more visual colour perception, while still remaining effective