Most people only require a Standard lens (1.5 index). If your SPH is ±3.00 or higher you'd benefit from thinning. Or if your Cyl ±2.00 or higher. If you select a slimmer lens and you don’t need it, we’ll downgrade and refund the difference. If we think you’d benefit from slimmer lenses, we’ll confirm before upgrading.
Standard Lens 1.5 Index, Thin Lens 1.6 Index, Thinner Lens 1.67 Index