title: Optometric visual training--its history and development.
mesh_terms: D005060:Europe; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049691:History, Medieval; D006801:Humans; D007859:Learning Disabilities / Q000209:etiology; D007909:Lenses / Q000266:history; D009907:Optometry / Q000266:history*; D010468:Perceptual Disorders / Q000628:therapy; D012029:Refraction, Ocular / Q000266:history; D009626:Terminology as Topic; D014481:United States; D014786:Vision Disorders / Q000150:complications / Q000628:therapy