We called up a few eyewear experts for a definitive answer. What are polarized sunglasses and how do they work? Simply put, polarized lenses filter light to reduce glare from surfaces like water ...

Polarized sunglasses work by filtering out the light oscillating ... Polarization has more to do with glare and will help reduce your eye strain while you're working outdoors or playing sports.

And, perhaps most importantly, they need to actually work—after all ... But what, exactly, are polarized sunglasses? What are they for and why do they cost so much? We called up a few eyewear ...