Wearing sun glasses with polarized lenses is especially helpful since they reduce or eliminate the glare that bounces off from the pavement. Certain light waves produce a vibration when they hit a surface and the polarization of special lenses counteract this type of light waves. So even if you're out riding your motorcycle on a sunny day and you're wearing stoggles prescription with polarized lenses, you wouldn't have to find yourself having to squint against the brightness of the road or other surfaces. This may not only help to prevent accidents, it can keep your eyes safe from damage that can be caused by glare.

Another thing to remember is that biker sunglasses need to have more than adequate ultraviolet (UV) protection. The recommended filter level is UV 400. Sun glasses with UV protection are even more important than those with polarized lenses. On days that are not sunny, polarized lenses are not really necessary since there is no bright light to reflect on surfaces. But even on cloudy days, dangerous ultraviolet rays are still present, and constant exposure to them elevates one's risks of getting skin and eye diseases. So, wearing sun glasses with a high UV protection rate even on not-so-sunny days can significantly reduce one's risk of getting photokeratitis, cataracts, macular degeneration, and other eye disorders.