Ottika Care - Blue Light Blocking Glasses - Model TR1868 Comes in 3 Frame Color & 2 Color of Coating. Plano ( Zero Power ) Comes in Gold Coating. Progressive Reading in Green Coating (Distance is zero and Near vision in power only). OVERVIEW Keep your eyes, and even your sleep patterns, safe from harm while viewing LED device screens and indoor lighting with these blue light blocking glasses. They protect against ambient blue light with superior filtration, reducing glare for sharper vision and less eye strain. The durable design delivers a snug, yet comfortable fit. DETAILS * Size: 55 - 18 - 146 * Shape: Unisex * Material: Metal & Plastic Combination * Blue Cut Coated Lenses + Anti Glare Both Sides, CR39 Lens, UV and hard coat for scratch-resistant & Anti Fog Coat - High Quality Lenses.