Mares offers our distinctive masks so they can be fitted with corrective lenses for near or far-sighted vision. And Esa, in particular, is the only mask in the world that can accommodate either type of corrective lens. The windows are made from tempered glass and conform to the most stringent international standards (ANSI - DIN). Mares also offers a complete range of positive lenses. These special lenses are applied inside the window of the mask, thereby providing a wide field of vision for underwater exploration and a sharp view of the instruments at the same time.

Models available with corrective lenses:

1. Esa
2. Zero9*
3. Seta*
4. Opera
5. Ventosa*

Each mask allows for quick and easy assembly of corrective lenses. The thickness varies as a function of the diopter strengths to always ensure the widest possible field of vision.

Negative lenses are available in diopter strengths from -1 to -10, in increments of 0.5. Positive lenses are available in diopter strengths from + 1.5 to +3.