How is an anti-reflective coating helpful on eyeglasses?

An anti-reflective coating on eyeglass lenses serves two purposes: it makes it easier for other people to see the wearer's eyes, and it improves the quality of the wearer's vision by reducing reflections.

The coating makes eyeglass lenses almost invisible to other people, by reducing glare from the sun and other lights. The coating also helps to reduce internal reflections in the lens, which makes the lens appear thinner and lighter.

Further benefits to the wearer come from the reduction in reflections, which cuts down glare and halos from lights at night. Different anti-reflective coatings may be available at different prices, and may also come with different warranties and replacement options.