Details about Terms Used in a Lens Workshop

Terms Used in a Lens Workshop 1. Lens Materials Glass Lenses – Made from crown or flint glass; scratch-resistant but heavy. Plastic Lenses – Made from CR-39 (Columbia Resin 39); lightweight and impact-resistant. Polycarbonate Lenses – Thinner, lighter, and highly impact-resistant; preferred for children and sports eyewear. High-Index Lenses – Thinner and lighter than standard plastic lenses, used for high prescriptions. 2. Lens Coatings Anti-Reflective (AR) Coating – Reduces glare and reflections, improves vision clarity. Scratch-Resistant Coating – Protects against minor scratches and extends lens life. UV Protection Coating – Blocks harmful ultraviolet rays, reducing the risk of cataracts. Blue Light Blocking Coating – Reduces digital eye strain by filtering blue light from screens. Photochromic Lenses (Transitions) – Lenses that darken in sunlight and become clear indoors. 3. Lens Types Single Vision Lenses – Corrects vision for one distance (near, intermediate, or far). Bifocal Lenses – Has two…