Which coating is associated with enhanced durability for photochromic lenses?

• A. Anti-reflective coating
• B. DuraVision coating
• C. Mirror coating
• D. Scratch-resistant coating

Answer: (B)

Durability of coatings matters for lenses that see a lot of wear and exposure, like photochromic lenses that repeatedly switch and are cleaned often. DuraVision is a branded multi-coating system designed to maximize surface toughness and long-term protection, offering strong scratch resistance and easier cleaning. That broader durability focus helps maintain the integrity of the lens surface and the photochromic layer over time. Anti-reflective coatings mainly reduce glare, but don’t primarily enhance surface hardness; mirror coatings add a reflective front surface and aren’t about protecting the lens from wear; scratch-resistant coatings do provide protection, but DuraVision represents a coating approach specifically marketed for extended durability across the lens, including the photochromic element.