Scratch-resistant coatings on glasses are thin hard coatings applied to lens surfaces that reduce (but do not eliminate) scratches. No lens is fully scratch-proof. Polycarbonate and high-index lenses are most prone to scratching without coatings.
Reviewed for accuracy by the FramesDirect editorial team using manufacturer specifications and published lens information.
Scratch-resistant lenses have a thin, hard coating applied to the surface that makes them more resistant to scratches from daily wear. The coating is applied before anti-reflective or other treatments. Even with this coating, lenses can still scratch under harsh conditions.
Most modern plastic lenses come with scratch-resistant coating as standard. Glass lenses are naturally more scratch-resistant but are heavier and can shatter. Polycarbonate and high-index lenses are softer and require scratch-resistant coating for durability.
Most prescription glasses sold today come with some level of scratch-resistant coating. However, the quality and thickness vary by brand and price point. Basic coatings offer minimal protection, while premium coatings provide significantly better resistance.
Glass lenses are naturally the most scratch-resistant but are rarely used today due to weight and safety concerns. Plastic CR-39 lenses have moderate scratch resistance. Polycarbonate and high-index lenses are the most scratch-prone without coatings.
What are polycarbonate lenses Lens materials
The best scratch-resistant coating depends on your lens material, budget, and lifestyle. Premium coatings from established optical brands offer the best protection.
Premium scratch-resistant coatings are often bundled with anti-reflective coatings. Leading brands include:
Premium coatings typically last longer and maintain clarity better than basic options. They also make lenses easier to clean and more resistant to oils and water.
Anti-reflective coating
With proper care, scratch-resistant coating lasts 2-3 years on average — the typical lifespan of a pair of glasses. Premium coatings can last longer with gentle cleaning and proper storage.
Coating durability depends on:
No — once scratch-resistant coating is damaged or lenses are scratched, the coating cannot be repaired. The only solution is to replace the lenses entirely.
Some people try polishing scratched lenses, but this removes the coating and reduces optical quality. DIY scratch removal methods often make vision worse and can damage the lens permanently.
Crazed lenses
Proper cleaning extends the life of scratch-resistant coating. Follow these steps:
A dirty microfibre cloth can still scratch lenses. Wash your cloth weekly with mild, bleach-free detergent and air dry.
How to clean your glasses
Yes — polycarbonate lenses are naturally more scratch-prone than CR-39 plastic or glass. However, they are far more impact-resistant, making them ideal for sports, children, and safety glasses.
Polycarbonate must always have scratch-resistant coating applied. Without it, the lenses scratch very easily. With quality coating, polycarbonate offers good durability while maintaining impact resistance.
Polycarbonate is the better choice for most people due to safety and weight advantages. The trade-off is that you must invest in quality scratch-resistant coating.
Scratch-resistant and anti-reflective (AR) coatings serve different purposes. Scratch-resistant protects the lens surface from physical damage. AR reduces reflections and glare for better vision.
Most lenses have both coatings applied together. The scratch-resistant layer goes on first, then the AR coating on top. This protects both the lens and the AR coating.
No — once lenses are scratched or the scratch-resistant coating is damaged, it cannot be repaired. The only solution is to replace the lenses. DIY polishing methods often make vision worse and can permanently damage the lens.
With proper care, scratch-resistant coating lasts 2-3 years — the typical lifespan of glasses. Premium coatings from brands like ZEISS and Crizal can last longer with gentle cleaning and proper storage in a case.
Yes — polycarbonate is naturally more scratch-prone than glass but far more impact-resistant and lightweight. With quality scratch-resistant coating, polycarbonate offers good durability while maintaining its safety advantages for sports and children.