Cressi Optical Lens for Focus or Prisma Dive Mask

These Corrective Lenses are for Cressi focus or prisma mask solely. These optical lens correct a diver's vision, in the same way that glasses would. Available in 0.5 diopter increments. The lens has a long life and thanks to its chemical composition, it reduces the annoying fogging effect. Corrective lens specifically for Cressi Focus Mask or Cressi Prisma Mask Available in Left and Right Negative Diopters: -1.0 to -8.0 positive : +1.0 to + 3.0