Here are tips for buying ski goggles:
Shop before you get to the mountain, so you don't end up paying an inflated price.
Insist on lenses that provide 100 percent ultraviolet protection, to shield your eyes from the sun's harmful UV rays.
Look for anti-fogging features such as double lenses, anti-fog coating and wide vents.
Ski goggles come in large, one-piece constructions that can be worn alone by people who use contact lenses or don't need vision correction.Alternatively, ski goggles will often accommodate smaller eyeglasses or sunglasses worn beneath them.Some models also include inserts for prescription lenses that can be made to your individual specifications and placed between the goggle lens and your eyes.
All ski googles should offer the basic protection from wind and cold. But beyond the basics there are some key features to consider: lens type, lens color/tint, interchangeable lenses, frame size and fit. I did some intense research for you, so you can check more details by opening the link http://www.evo.com/how-to-buy-ski-snowboard-goggles-lens-size-fit-guide.aspx
Hope this can help you out!
I make an intense research for you and you can open the link http://www.allaboutvision.com/buysmart/goggles.htm to get detailed information about how to choose a pair of ski goggles. Hope this helpful.