title: Spectacles and contact lenses: a survey of military trainees.
mesh_terms: D000367:Age Factors; D003261:Contact Lenses; D005139:Eyeglasses; D006801:Humans; D008297:Male; D008887:Military Medicine; D011795:Surveys and Questionnaires; D014481:United States; D014786:Vision Disorders / Q000453:epidemiology