Spectacle Lens Market, By Lens Type (Single Vision, Bifocal, Trifocal, Others), By Coating Type (Anti-reflective Coating, Scratch-resistant Coating, Anti-fog Coating, UV Protection, Others), By Disease Indication (Myopia, Hyperopia, Presbyopia, Others), By Type (Rx Spectacle Lenses and Non-Rx Spectacle Lenses), By Sales Channel (Retail Stores, Online Stores, Ophthalmic Clinics), By Geography (North America, Latin America, Asia Pacific, Europe, Middle East, and Africa)