What is glare, and how do polarized lenses effectively eliminate it?
A polarized lens filters and eliminates annoying and sometimes dangerous glare. Wherever there are horizontal surfaces producing glare, the use of polarizing lenses is recommended because it reduces eye fatigue and maintains the health of your eyes while exposed to the sun. Non-polarized sunglasses reduce visible light, however they have little or no effect on reflected glare. Only polarized lenses eliminate glare and help you see clearly. To understand polarization, it is necessary to understand glare. Normally, light waves move randomly in an infinite number of directions. However, when light reflects off a surface, it intensifies and polarizes into reflective glare. Horizontal light reflected from smooth shiny surfaces, such as water, a wet road, a car window or snow causes glare. Polarized lenses utilize iodine crystals that are positioned in vertical rows on a thin piece of film. This film is sandwiched between two layers of lens material. The filter within the lens allows selecte
