Customers regularly ask our Specsavers Opera Lane team what polarised lenses do and what difference they make. Sometimes light reflects back to our eyes from flat/shiny surfaces, like water/roads/snow etc. which causes a glare. Polarising lenses have built-in filters that block the glare entering your eye. It makes such a difference and once people try them, they actually like to use them all year round. Visit our store in the heart of Cork city.