Why Use Eyeglass Lenses?
A necessary part of having a pair of eyeglasses is the lenses. Lenses are made from three basic materials: plastic, glass, and polycarbonate. Plastic, the widely used material for lenses and it is stain resistant and lightweight but limited to simply being scratched. Glass is as well used for lenses and is cut resistant but is heavy and breakable. Most everyday use lenses are created from high resin. Hard resin lenses are actually lightweight, offer good optical excellence, and are resistant to scratches. They could as well be further upgraded with color tints, UV – protectants, or photo chromic. Polycarbonate lenses are especially indented for high bang resistance and are perfect for occupational hazards, children, and for athletes. They offer the most excellent eye protection. High Index Lenses allow broad prescription glasses to be thinner by compact the material. “Index of refraction” is a normal term that is used to explain the speed at which light travels during the material. A g
