The Eyres Indulge 628 has made an excellent pair of non-prescription safety sunglasses, but now that SAI Global has approved them for certified medium impact prescription safety glasses.  They look much like standard sunglasses but have the benefit of being certified medium impact.  With standard single vision lenses included in the listed price, they will be clear, but if you want safety sunglasses, just add transition or polarised.  Order NOW!