Hello everyone.

I would like locations where i could make prescription sunglasses with class 3 and 4 fit for high mountain and glacier.

Preferably in Europe but the United States is also useful.

Thanks!!!!

You might try Julbo. Their glasses are available with prescription lenses. Headquartered in France, I believe, but sold internationally.

http://www.julbo.com/

I’m not sure what Class 3 & 4 fit means. I have always preferred aviator style sunglasses for high altitude, snow-covered and sunny terrain. You can easily get prescription lenses for this style of sunglasses. You can even get them with bifocal lenses: I did. If going for bifocals I recommend the reading part be set 2mm lower than is the norm. That way the reading part won’t interfere as much with your view of the trail.

Another option is what I use: oversize sunglasses that fit over your regular glasses. They allow you to use your normal glasses, cover more of your face, and are very cheap.

The type of mountaineering sunglasses he's looking for probably would be hard to find in a size large enough to fit over his regular glasses, and it's doubtful they'd be cheap either. As a hiker who spends more time in forests than on snow, I do not need such extra-strong protection, but anyone who is spending entire days on glaciers at high altitude is well-advised to seek sunglasses designed for that kind of severe conditions.