title: Combat spectacles: military testing of a new spectacle frame.
abstract: An improved spectacle frame has been developed for use during periods of extreme physical activity, particularly by military personnel during combat operations, and which can be used under protective face masks and headgear. The frame has a wrap-around shape, made of nylon with a contoured, recessed bridge and safety lens groove. U-shaped bridles snap on the frame front and an adjustable, interlocking strap fits over the bridles and passes under a protective mask sealing area. Field tests were conducted with 1231 soldiers at 12 military installations. Over 90% of those tested found combat spectacles were comfortable to wear, extremely durable, compatible with headgear and superior to existing military eyewear.
mesh_terms: D004867:Equipment Design; D005069:Evaluation Studies as Topic; D005139:Eyeglasses / Q000592:standards*; D006260:Head Protective Devices; D006801:Humans; D008889:Military Personnel; D009757:Nylons; D012408:Rubber; D011795:Surveys and Questionnaires
chemical_list: D009757:Nylons; D012408:Rubber