What are clip-on glasses?

What are clip-on glasses? Clip-on glasses offer a simple and effective way to combine vision correction and sun protection. These easy-to-use accessories transform regular glasses into sunglasses within seconds. Clip-on “sunglasses adapters” are removable accessories that attach to your existing eyeglass frames with a magnet. This allows you to switch between glasses quickly and easily….

What is the diopter?

What is the diopter? Diopter indicates the optical power of eyeglass lenses and contact lenses. But what exactly does this mean and how is it measured? Diopter (D) is a unit of measurement for the refractive power of a lens, indicating how well the lens can bend light. A positive diopter value (e.g. +2.00 D)…