An expediant measure is to daube your lower eyelids and cheeks with a dark paste such as mud or charcoal from a cold fire. The Inuits made their glasses from thin ivory.They used their parka ruffs for peripheral protection.Look at a pair of glacier or mountaineering glasses in the camping catalogs. They all have side and noseguards. You can encounter the same hazard in the classic sand dune type deserts and on beaches. I experienced snow blindness in American Samoa after a full tour in Alaska! Imagine throwing wet sand in your eyes and having the worst headache you can remember. Snow blindness is ultraviolet burning of the cornea. First aid is as follows;clear the eye(s) of any possible debri and patch. The eye will regenerate in 24-48 hours.You should check at least after 24 hours for signs of pus or infection. If present you should revert to sunglasses, pain medication as appropriate. You can improvise Inuit glasses from almost anything. I just made a pair from the cardboard box for my candles and some paracord just to remember. Several of the surplus companies are selling classic snow goggles.These are rubber cupped individual round lens tied to the head with flat string.they come in a small can.You could improvise glasses from thin bark such as a birch tree or even precut a pair from a plastic container.<br><br>