Approaching the problem of what constitutes an adequate pair of mountaineering glasses a look will be taken at what needs protection, why and how this is best accomplished. Characteristics to be expounded upon range from a physiological consideration, to electromagnetic considerations, to lenses (glass, plastic, contact), to frames, to several miscellaneous parameters. With a knowledge of these characteristics a person could readily identify an excellent pair of mountaineering glasses.
Files are restricted to Pacific University. Sign in to view.