Why can’t I read my cell phone with my polarized sunglasses?

If you love being outdoors you should know wearing polarized 100%UVA/UVB blocking sunglasses is the smart thing to do. Lens filters on sunglasses that block 100% of UVA & UVB rays will save your eyes from glaucoma, cataract and macular degeneration-causing UV rays. The Polarization filter, on the other hand, will protect your eyes from painful and blinding glare.  However, you might have noticed your cell phone, iPad, Kindle or tablet screen is difficult to see when you are wearing polarized sunglasses. If your sunglasses are polarized (and they should be, for maximum eye protection), your screen might look very dark or completely black when you look at it. Why does this happen?  Most phones have a polarizing filter that helps to cut glare and reflections, ironically to make it easier to see in bright sunlight. The problem is, so … Read More