What is lens index? When it comes to getting new glasses, most people focus on the frame. But the lenses—and more specifically, their index—play a huge role in how your glasses look, feel, and perform. Whether you’re looking for the thinnest possible lens or trying to balance cost and comfort, this guide will help you understand what lens index is, how to choose the right one, and what you can expect in terms of price. What Is a Lens Index? The lens index, or refractive index, measures how efficiently a lens material bends (or refracts) light. The higher the index, the thinner the lens can be while still correcting your vision accurately. ➕ Higher index = thinner, lighter lenses ➖ Lower index = thicker lenses, especially for strong prescriptions Lens…
