I use ESS NVG Profile goggles and ICE 2.4 glasses, both use the same wire frame Rx insert. I was never able to use contacts, they drive me insane and end up irritating my eye (and my mood).
Field of vision isn't really a problem since the goggle's frame limits your field around the edges, plus I'm usually wearing either a ball cap, boonie hat or helmet (MICH), all of which force me to tilt my head back (when prone) to see forward.
Your Rx inserts get their own set of prescription lenses, so coating isn't really a problem. I got the most basic set with no anti-fog or anti-reflection coating, and use my own anti-fog solution (Sea Drops). The reasoning for no treatment on the lenses is simple: the anti-fog they use isn't sufficient for airsoft, and the polycarb lenses on the goggles don't have anti-reflection, so even if your Rx lenses are treated you'll get reflection anyway. Better to save your money and use your own anti-fogging solution. And with a hat on, reflection has rarely been an issue.
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