What purpose does anti-reflective coating (AR) serve?

• A. Increases glare
• B. Increases weight
• C. Reduces glare and reflections
• D. Blocks UV completely

Answer: (C)

Anti-reflective coating is meant to minimize reflections on lens surfaces, letting more light reach the eye and reducing glare from lights, screens, and other reflections. This leads to better contrast, clearer vision, and greater comfort in both bright and dim conditions. That’s why reducing glare and reflections is the primary purpose. It doesn’t increase glare, and the weight change is negligible. Blocking UV completely isn’t the main function of AR coatings; UV protection is provided by the lens material or a separate UV layer, with AR coatings sometimes contributing but not guaranteed to block all UV.