Whether you are shopping for prescription glasses frames, sunglasses or any other type of glasses, it can be helpful to familiarize yourself with some of the terminology first. There are so many options that it can be difficult to find the right pair for you. Typically, eyeglass frames are categorized by type, material and shape. The following information will help you to understand all your options.

Lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light

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There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightlyon in some form, by cted words which don't loy be, or which don't look even slightlyable.