High index lenses are best for high myopia.please protect your eyes. High Index 1.67 blue cut lenses are thin, lightweight, and ideal for strong prescriptions, offering superior comfort and aesthetics by reducing lens thickness and weight significantly, while the blue cut feature filters harmful blue light from screens to decrease digital eye strain, improving visual performance, sleep quality, and eye protection with added UV blocking. These lenses often include hard anti-reflective (AR) coatin