Polarised sunglasses are used to stop light from hitting you directly in the eyes. They work by reflecting the light away from the eyes and this allows you to see much better.
Our eyes work when light reflects off an object, and this allows us to see whatever it is that light is bouncing off. The light scatters and we are able to see the image. However, when a surface is incredibly reflective, this light doesn’t have a chance to scatter as it normally would as what we get is all of this light reflecting right back into our eyes.
Not only does this massively affect your vision and prevent you from being able to see what is happening on and under the water but it can also be highly damaging to your eyes. If you spend a lot of time angling in the sun, then a pair of polarised glasses will be extremely beneficial. Not to mention that spotting fish under the surface is so much easier with some decent glasses.
When you are fishing, one of the advantages is being able to see what is in the water. OK, if things are a little murky then that’s not always so easy but if there is any clarity to the water, this will be immediately taken away with glare from the sun.
Polarised glasses eliminate this glare and allow you to see fish as they cruise around.