The MEGA mask is $150. Does that price include corrective lenses for nearsighted divers?
A No extra “glue-on” or replacement lenses are needed for the MEGA underwater. The prescription (negative diopter power) is created by the curve of water that forms on the front of the mask, when submerged. If your naked eyes don’t happen to be within the range to use the MEGA prescription, then low-cost / high-resolution disposable contact lenses easily adjust your vision to match the MEGA. You’ll need contact lenses if: A. You’re nearsighted, but outside the required accommodation range. B. Farsighted. C. 20/20 and more than about 22 years old (we all lose our ability to focus close as we age (see this chart). The MEGA has zero optical power when there’s air on both sides of the lens; it is the seawater’s concave shape that creates the prescription-power when you’re submerged. The CoverLens provides in focus vision while wearing the mask above water. (top) 24.