Your precious eyes are your window to the world and they want comfortable lenses. Clex are high quality lenses that delivery all-around comfort to your eyes. Clex eyeglass lenses will always give you a clear and refreshing view. If you want the highest quality, choose Clex. Now Korea Optical Co., Ltd. supplies Clex-the clearest lenses in the world. We are pleased to take this opportunity to introduce ourselves to you. We are serving our customers with a variety of items and fast delivery for any kind of lenses such as spheric, aspheric, progressive lenses and Rx lenses as well as photo-chromic lenses and poliarzed lenses. We always maintain high quality and will do our best for fast delivery and being credit-worthy for the customers.