Polarized sunglasses are designed to reduce the glare from surfaces like water, snow, and glass and increasing depth perception. They have been popular for years with boaters,fisherman and help the participant in these activities to see more clearly, allowing for the avoidance of potential hazards. While they may be somewhat more expensive than conventional sunglasses, some consumers prefer polarized sunglasses because they selectively block out glare, rather than making the whole field of vision dimmer, which can be dangerous in some situations.
Well, I can see that you are quite interested in those polarized sunglasses. So as a matter of fact, you should call it as an updated version of sunglasses, because they are better than conventional sunglasses and could provide better protection. With polarized sunglasses, most harmful lights could be reflected and they are suitable for fishing activity. Of course they are worth what you pay.