Prescription Lenses for Promate MK107 Micro Mask or Swimming Goggle (Pair) - OP107*Prescription Corrective Lenses for Snorkeling and Scuba Diving Mask *GetWetStore offers a complete line of affordable prescription lenses for dive masks. *These 'stock' negative, positive, bifocal prescription lenses only fit certain masks. *These corrective lenses are designed for off the shelf correction. *These lenses are not for those with more complicated vision problems such as astigmatism (correction needed for both near and far away) or