An overabundance of visible light can also bleach the rod receptor sites of the eye, impairing night vision. We believe that sunglasses for the sportsman should be more a matter of function than fashion, and that sunglasses should be regarded as a total system combining function, design and style. They enhance your vision and reduce eye strain, offering true protection for your eyes from the harmful effects of the sun. The Difference between Non-polarized and elton Polarized Lenses Ask anyone who knows fishing or boating and they will tell you that polarized sunglasses are a must. They are much more than just sunglasses, they are essential equipment.
Light is polarized by reflection.
When light strikes a surface, like water, it becomes scattered and travels in all directions like a 4 th of July sparkler. This is what is commonly known as glare. This glare produces eyestrain and discomfort because the eye must work harder to overcome an increase in brightness while trying to view objects which appear washed-out. This is why fishermen, for example, know the advantage of wearing polarized sunglasses. They eliminate the water's glare, which enables them to see fish clearly beneath the surface.