Before you flame ... read closely.... Eyeballs literally freeze in their sockets? Like an icecube? I did not sincerely suggest that, only metaphorically, hence the "more or less" disclaimer in my post.
: The thread concept was "why can't you ski with sunglasses." The idea was it can get cold enough to want to protect one's eyes. Or at least mine. But since that distinction was lost, apparently, on some readers, let's consider the concept.
Let's accept the postulated -25F. Skiing Bretton Woods every winter, all winter (think Mt. Washington) we do get those temps with a distressing frequency, so I have some familiarity with it. Could it happen, could you get eyeball freeze? Hard to say, but the test candidate probably would not get that far in the process of trying to find out, something to do with pain and inability to endure, I would assume. However, some factors might be: (a) how fast you are skiing; (b) how exposed (trees or groomed); (c) how cold it really is (as opposed to guesstimates); (d) how well the glasses fit (glacier glasses with the side pieces etc. might take the place of goggles); and (e) personal circulation and other considerations.
Eyelash freeze ... only that? Really? At -25F? You don't think that you might get some surface freeze? Eyelids? Nose? Cornea damage, maybe? At -25F, we are talking "snotcicles" where the ice starts to form inside your nose (word invented by my 11 year old son), not just Klingons hanging out the bottom. Your breath forms a serious ice patch as you breathe through your mask. At those temps frostbite is not only a serious hazard, it can/will stike extremely quickly -- that was the concept behind "no body or skin pieces showing or they freeze." Ask how many people ski patollers see with frostbite. At BW they see it all the time. -25F is as far below freezing as +89F is above freezing.
: We both apparently ski the Northeast, but you must be made of far, far sterner stuff than I to scorn the notion of eye damage resulting from a failure to heed conditions. Even my skis start to stick to the snow like velcro.
Every time that it gets really cold I see people (chiefly New Yorkers and the English who, for some reason that is simply beyond comprehension, decide to ski Bretton Woods) who are not used to the conditions lining up at the ski shop at the mountain, buying all manner of gear to protect themselves. Neoprene butt warmers. Neoprene socks. Electrically heated gloves. Warmers for gloves and boots. Neck gaiters. Full face neoprene/fleece. Even then few people manage more than two or three runs before coming in to thaw. Sunglasses? I don't think so.