Have you ever had a glare penetrate right through your eyes when you looked towards a shiny surface or even road when the sun was shining bright? In layman terms, we term it glare, but, scientifically these are horizontal lightwave that reduces visibility and makes it uncomfortable to carry on driving, cycling or whatever we may have been doing. Polarized lens block virtually all glare by only allowing the vertical lightwaves that is useful to the human eye to see.