Eyeglasses The Basics of Eyeglasses Get a quick overview of the types of eyeglass frames and lenses available to you. Eyeglass Frame Materials Which frame material is right for you? Learn about the different types of metal and plastic, and the advantages of each. Lens Options for Eyeglasses It's no longer a simple choice between glass and plastic. Today's lenses offer many options to help you see and look your best.