Glacier sunglasses differ from regular sunglasses in several crucial ways. Although expensive sunglasses can be used for many activities, only glacier sunglasses are suitable for mountaineering, because alpine environments present unique solar situations. For instance, correctly made glacier sunglasses wrap around the facial area to protect the skin from peripheral solar infiltration. Also, these glasses shield the face from reflected UVB and UVA radiation, which can seriously damage the inside of your nasal passages.
Threats From all Angles
Sunlight in the mountains does not only come from in front of you and above, it is powerfully reflected up off the surface of the snow as well. With normal sunglasses, these rays slip underneath the lower edges and can produce painful and potentially harmful retina burns. Glacier sunglasses are made to cling to the face to minimize this type of sunlight intrusion.
Often, the long and short term damage that UVB and UVA radiation can cause is misunderstood, or not properly appreciated. Rays from the sun can produce instant blindness, or a delayed irritation that manifests itself in the hours following exposure. Thus, it is essential to adopt comprehensive protection for your eyes when you are in the mountains. This applies even if the weather is overcast and bright sun rays are not evident.
Learn From the Past
In the mountains, disrupted eye protection is a serious matter, and mountaineering history is littered with tales of climbers who had to spend weeks with bandages on their eyes, because of snow and sun blindness. Do not cut corners when buying this essential safety equipment. A basic, correctly designed pair of glacier sunglasses will cost about £40.00, and you could expect to pay anything from £50.00 to £110.00 for a higher quality pair that will last longer.
You should consider buying Julbo brand glacier glasses, or another high standard, competitively priced brand. The Julbo brand offers the best protection and represents good value. You do not need to purchase a high end model — any pair made by Julbo will suffice. Make sure you get glasses that are Category Three or Category Four (which is a measure of tint/darkness) for mountaineering. If your eyes are sensitive or blue, then definitely get Category Four. Many glasses are sold with a neck lanyard and solid case. However, if your pair does not come with these items, purchase them separately to ensure your glasses will be protected.
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