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Tag: polarised lens

Polarized and non polarized

Are polarised sunglasses good?

Are polarised sunglasses good? You probably know the importance of UV protection sunglasses to our eyes. UV rays from sunlight are harmful to our eyes and extended exposure to UV rays can lead to development of ocular diseases such as cataract, ARMD (age related macular degeneration), pterygium and so on.  As we all know sunlight scatters in all directions. However, when sunlight strikes on a flat surface, the light is reflected by the surface. At this time, the reflected light will travel in a uniform direction and most of the time they reflected horizontally. This phenomenon of light is known as polarization. The polarized light creates an annoying and sometimes dangerous intensity of light that results in glare and reduced visibility.  Annoying polarized light and sun glares create unnecessary troubles…