High Index 1.67
High Index 1.67 is our premium high-index lens material that keeps up with the latest trends in fashion and design. Thin and lightweight yet optically pure, it offers the perfect combination of clarity, comfort and style.
With a refractive index of 1.67, High Index is especially suited to the needs of wearers with a moderate to high prescription who require a strong, elegant lens. Compared with a standard index lens, it is up to 40% thinner and five times stronger. Heat resistant up to 95°C makes processing, including tinting and coating, easy.