the difference between fake oakley ordinary sunglasses and polarized sunglasses

the difference between ordinary sunglasses and fake oakley polarized sunglasses:
Ordinary sunglasses: only the light intensity decreases, the price is relatively foakleys cheap;
Polarizer is to filter out glare over the entire reflector, can play a role in anti-vertigo, high-end sunglasses, prices are high.
Uses: For less demanding people, ordinary sunglasses on it. Car is best to wear polarized sunglasses, so you can filter out the ground or across the body of the light reflected back to make clearer vision, reduce visual fatigue. So I think whether it is by car or outdoor play, or wear a polarizer appropriate. - knockoff oakleys copy right.