>>2230448That's not how glacier glasses work, for starters. That's not how light filtration works at all. Here's a picture of glacier glasses. Like
>>2230587 said, mountaineering is not a sport where you go half-price on anything. Crampons, glasses, ropes, headlamps, carabiners, screws, your harness, your helmet, none of them are things that you should cut costs on. Look at that famous polish guy that bought cheap rope at a local market and then fell off K2. I'm drunk so his name escapes me, but pay attention to this advice.
