With the development of eyeglasses technology, eyeglasses are becoming more and more diversified. Unlike previous time in which eyeglasses have only one kind of design: full metal frame and round lenses, now eyeglasses have a wide range of designs and types. According to the frame types, eyeglasses can be classified into full-frame, semi-rim and rimless ones. Different frame types have different features and can satisfy different demands of different people. (more eyeglasses frames…)