Everyday light is composed of a spectrum of colors from blue to red.
Blue light is a higher energy light which tends to scatter more off small particles in the atmosphere or in the fluids of the eye than other colors. It causing a haze or glare. In the sky, blue light scatter creates the blue sky we all enjoy. In the eye, it can cause a hazy blur which disrupts our vision. Amber filters reduce the blue light component of white light and may enhance the sharpness of what we see by lessening the scattering of light.