[On the etiology of myopia. An epidemiological study].
D000293:Adolescent; D000328:Adult; D003718:Denmark; D004200:Diseases in Twins; D004777:Environment; D005260:Female; D049672:History, 19th Century; D006801:Humans; D008297:Male; D009216:Myopia / Q000453:epidemiology* / Q000209:etiology* / Q000235:genetics / Q000266:history; D009784:Occupational Diseases; D009887:Ophthalmoscopy; D014792:Visual Acuity; D014796:Visual Perception