HydroOptix MEGA 4.5 DD User Manual

We want you to enjoy the best possible underwater vision, but because this mask works differently than any other
mask you have used please take the time to become familiar with a few new guidelines. Please read ALL of the
following guidelines before using your new mask.

WARNING! PREVENT FUZZY VISION UNDERWATER:

If you are not a "Naked Eye" match for this mask you may experience eyestrain, headache, and short-term inability to
focus. Before diving with your MEGA 4.5DD mask, you should become familiar with the mask's characteristics in a
swimming pool or confined water. If your above-water vision Rx is not in the naked-eye range (see Rx Chart on last
page), you will probably have to wear contact lenses to use the mask. If you need to wear contact lenses to use the
mask and do not have a current contact lens prescription, visit a participating HydroOptix DEC-Pro (Diving Eye Care
Professional), or your Eye Care Professional. A fitting guide for your Eye Care Professional is available on our website.
The MEGA mask lens is made of optical polycarbonate. It is hard-coated to resist scratches, but it is not scratch-proof.
DO NOT CLEAN THE LENS WITH ANY SOLVENTS.
DO NOT SCRUB THIS LENS PRIOR TO USE. At the factory this lens is Hard Coated on the outside to resist
scratches, and NanoFOG coated on the inside. When tiny beads of moisture (fog) land on the inner lens surface,
they are absorbed into the NanoFOG coating. The NanoFOG coating becomes soft in water – handle carefully.
• Before diving: Briefly dunk the mask in FRESH water to saturate the NanoFOG coating.
• After diving: Do not leave the mask submerged in a rinse-bucket where other objects floating in the water could
drift inside the mask and scratch the NanoFOG coating. Remove salt crystals and sand by dunking in FRESH
water – do not rub the soft NanoFOG coating to remove this debris, just flush with a gentle stream of water.
• To dry: Prevent water puddles at the bottom of each dome by placing the mask
silicone skirt down (domes-up). (See picture at right.)
• To clean: Suntan lotions and body oils reduce the anti-fog properties. Clean the NanoFOG coating with McNett
SeaGold™ Anti-Fog Gel. Use gentle finger pressure to massage the gel into the NanoFOG surface while adding a
little water to reduce friction; rinse.

WARNING! PREVENT MASK SQUEEZING:

Pressure increases when descending in water. Just after you equalize or "clear" your ears, you should also equalize
your mask to avoid "mask squeeze". If you use the Valsalva maneuver to clear your ears (pinching your nose and
blowing gently) then follow this process by gently pulling the nose-pocket away from but not off of your face, as you
slowly add air to the mask through your nose.
10154 / M45UserGuide102505.doc
Scuba / Snorkeling Mask User Guide
General Use, Care & Cleaning
™
LENS COATING PREVENTS FOGGING
page 1 of 5
DO NOT SCRUB
®
© 2004 HydroOptix LLC