Liquivision claims that when you use their Nirvana 2 Fluid Goggles, you won't need "to waste precious air to equalize the mask and you will have more air to equalize deeper than ever before." I never considered that I was "wasting precious air" when equalizing, but maybe I'm missing something. Liquivision also promises that its masks eliminate mask squeeze, fogging, and flooding. I guess that's because, basically, when you're wearing a Nirvana 2, your mask is already flooded. Yup! Filled with saline solution, diving with the Nirvana 2 means that while you're eyes are open, they're touching liquid meant to "enhance your apnea reflex."
Featuring adjustable, removable, corrective lenses; a wide field of vision; and "greater thermal insulation against cold water," the Nirvana 2 is the only mask in the world that doesn't require equalization. Liquivision's Nirvana 2 Fluid Goggles run a hefty $295 per set, and they don't even include the required nose piece!
[Via X-Ray Mag]
1. These are probably just for hardcore freedivers, not really scuba divers. If you're at 333 feet and it requires, say, 2 cubic inches to clear your mask, that would be the surface equivalent of 12ATA * 2 cubic inches of air, and that's a lot of oxygen to 'waste' clearing your mask as opposed to, you know, keeping you alive :)
I'm wrong on the calculations, there's an equation that you can punch in 12ata and cubic inches and determine volume, but you get the general idea about wasting precious air on equalizing.
Posted at 11:51AM on Dec 7th 2006 by Mark