There are certain barriers to effective communication that every organization faces. These potential interruptions of the flow of information are referred to as noise. Communicative problems (i.e., noise) can be categorized into three groups: technical, semantic, or efficacy-related.
Polarized vs Non-Polarized Aviator Sunglasses. For most people wearing polarized sunglasses it simply helps reduce glare off windows, ice or water; however, for pilots using polarized sunglasses there can be a number of serious problems.
1 Polarized lenses reduce or eliminate glare and reflections from the sun. You can have coatings added to the lenses of your sunglasses and block 100% of UV rays.  Go online to check the UV index in your area. Visit the U.S. Environmental Protection Agency's SunWise Program for the latest UV index information.