Anti-reflective coating or AR coating is a special formula that is added to the front and back of glass panels. When this formula has been added, it can greatly reduce the amount of glare that you get from surrounding lights. This can include sunlight, overhead lights, task lighting, light from the computer screen or headlights from oncoming cars at night. In fact, most people cite the reduced glare when driving at night as one of the biggest benefits of AR coating.