1.49 Index – Standard
Standard Lens Thickness, providing the best optical clarity. They are generally not suitable for rimless frames.
1.6 Index – Thin
Being 20% thinner than standard lens material, this is more effective as they are shatter resistant. They offer 100% protection from harmful UV rays and are ideal for rimless frames.
1.67 Index – Very Thin
This lens material is 33% thinner than standard lens material and is recommended for lens types that have high powers. They also offer protection from harmful UV rays and are perfect for rimless frames.