Polarised lenses, are lenses that allow only light from a particular direction of polarisation in natural light to pass through. Because of its light filtering effect, you see things darker when you wear them. In order to filter the harsh light from the sun that shines on water, land or snow in an equal direction, special coatings are added to the lenses in a vertical direction, which are called polarised lenses. They are best suited for use during outdoor sports (e.g., maritime activities, skiing or fishing).
The special effect of polarised lenses is to effectively exclude and filter out the scattered light in the light beam. The light can be put into the visual image of the eyes in the right axis of light transmission, so that the field of vision is clear and natural. Like the principle of blinds, the light is adjusted to the same direction of light and enter the room, naturally making the scene look soft and not harsh.