Polarised lenses are sunglass lenses with a special filter that reduces irritating reflectiveness and enhances contrast. Polarised lenses are especially useful if you’re on sea. For example, during a fishing trip, you can see a fish in the water without reflections on the water surface disrupting your view. You also won’t be disturbed by reflections on wet asphalt while driving. However, polarised eyeglass lenses may reduce the visibility of readings projected onto the windshield of a car, as well as the visibility of smart device and computer screens.