As stingy Zivildienstleistender I got myself a civilian glasses at Fielmann, without antireflection coating and the cheapest, Chinese import glasses. Just nix pay more! I put the money saved in these goggles from Fashy that you have to assemble yourself, where you at first the band, ordered with the nose bridge and two matching corrective lenses and the whole mounted, has cost me a mere minute and was really very easy and even described in detail on a package insert. The optical properties of these glasses are really excellent and if you're not a bad astigmatism or something, to get very well with these low-cost corrective lenses. It was a sheer delight to dive to the bottom and watch the girls in bikinis from from tank bottom. Be honest guys, what else do you need such a clear vision underwater? : D