DuraVision Sun AR coating is applied on which side of the lens?

• A. Front
• B. Back
• C. Either side
• D. Edge

Answer: (B)

Anti-reflective coatings work by minimizing light reflected from lens surfaces, so more light passes straight through. For sun lenses, applying the coating on the side that faces the eye—the back surface—yields the most benefit. Light hits the outer front surface, passes through, and any reflections that would bounce off the inner back surface toward the eye are reduced by the AR layer there. This lowers glare, reduces ghost images, and improves contrast and comfort in bright conditions. Placing AR on the front surface would mainly address reflections seen from outside, not the reflections that travel back toward the wearer's eye, so the back side is the intended location for DuraVision Sun AR. The edge isn’t used for AR protection.