Why choose coated lens and what the advantages of it?
Hard Coating
Lens Coatings: Everything You Need To Know | Yesglasses
1.591 Index Polycarbonate Hc Hard Coating Optical Lenses Manufacturer - China 1.59 Polycarbonate Optical Lens and Single Vision Lenses Cr39 price | Made-in-China.com
essilor TD2
3M Occupational Health & Env Safety Anti-Scratch Hard Coat Lens Protective Eyewear, Gray (113270000020): Safety Glasses: Amazon.com: Tools & Home Improvement