Gözlük Camı Kaplamaları ve Renkli Camlar

Spectacle lenses are made of mineral or organic (plastic) materials. Various coatings and tints are applied to the spectacle lenses according to\udthe characteristic of the lens material, and for the personal needs and cosmetic purpose. The coatings may be classified in seven groups: 1)\udAnti-reflection coatings, 2) Hard coatings, 3) Clean coat, 4) Mirror coatings, 5) Color tint coating (one of coloring processes), 6) Photochromic\udcoating (one of photochromic processes), and 7) Anti-fog coatings. Anti-reflection coatings reduce unwanted reflections from the lens surfaces\udand increase light transmission. Hard coatings are applied for preventing the plastic lens surface from scratches and abrasion. Hard coatings\udare not required for the mineral lenses due to their hardness. Clean coat makes the lens surface smooth and hydrophobic. Thus, it prevents the\udadherence of dust, tarnish, and dirt particles on the lens surface. Mirror coatings are applied onto the sunglasses for cosmetic purpose. Color\udtinted and photochromic lenses are used for sun protection and absorption of the harmful UV radiations. Anti-fog coatings make the lens\udsurface hydrophilic and prevent the coalescence of tiny water droplets on the lens surface that reduces light transmission. (Turk J Ophthalmol\ud2012; 42: 359-69