When ordering your prescription eyeglasses, give careful consideration to having them treated with an anti-reflective (AR) coating. By eliminating reflections from the surfaces of both the fronts and backs of each eyeglass lens, AR coatings improve vision and also make it possible for people to see the wearer’s eyes and facial expressions more clearly. This benefit is sure to be appreciated by those who have ever had their pictures taken with their glasses on. AR coatings are particularly beneficial for those wearing high-index lenses, which tend to reflect more light than regular plastic lenses. In any case, AR coatings promote sharper vision with less glare at night and more comfortable vision during prolonged sessions at the computer screen. High-index lenses are lighter and thinner than regular lenses due to their greater light-focusing power.