title: An optometric detective: in search of antique eyewear.
mesh_terms: D004739:England; D005139:Eyeglasses / Q000266:history*; D005602:France; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D010414:Pennsylvania; D014481:United States